![Kent Irwin](https://profiles.stanford.edu/proxy/api/cap/profiles/55469/resources/profilephoto/350x350.1556817558157.jpg)
Kent Irwin
Director, Hansen Experimental Physics Laboratory (HEPL), Professor of Physics, of Particle Physics and Astrophysics and of Photon Science
Bio
Irwin Group web page:
https://irwinlab.stanford.edu/
Academic Appointments
-
Professor, Physics
-
Professor, Particle Physics and Astrophysics
-
Professor, Photon Science Directorate
Administrative Appointments
-
Faculty Director, Hansen Experimental Physics Laboratory (2020 - Present)
-
Professor of Physics and of Particle Physics and Astrophysics and Photon Science, Stanford and SLAC (2013 - Present)
-
Fellow, National Institute of Standards and Technology (NIST) (2007 - 2013)
-
Professor Adjoint, Astrophysics and Planetary Sciences, University of Colorado (2006 - 2013)
-
Supervisory Physicist, National Institute of Standards and Technology (NIST) (2002 - 2007)
-
Physicist, National Institute of Standards and Technology (NIST) (1996 - 2002)
-
Postdoctoral Researcher, National Institute of Standards and Technology (NIST) (1995 - 1996)
Honors & Awards
-
Department of Commerce Gold Medal, United States Department of Commerce (DOC) (2012)
-
Fellow, American Physical Society (2007)
-
Joseph F. Keithley Award, American Physical Society (2007)
-
Arthur S. Flemming Award, George Washington University (2006)
Professional Education
-
Ph.D., Stanford University (1995)
-
M.S., Stanford University (1995)
-
B.S., California Institute of Technology (1988)
2024-25 Courses
- Modern Physics
PHYSICS 25 (Spr) -
Independent Studies (3)
- Independent Research and Study
PHYSICS 190 (Aut, Win, Spr) - Research
PHYSICS 490 (Aut, Win, Spr) - Senior Thesis Research
PHYSICS 205 (Aut, Win, Spr)
- Independent Research and Study
-
Prior Year Courses
2023-24 Courses
- Modern Physics
PHYSICS 25 (Spr)
2022-23 Courses
- Modern Physics
PHYSICS 25 (Spr)
2021-22 Courses
- Modern Physics
PHYSICS 25 (Spr)
- Modern Physics
Stanford Advisees
-
Doctoral Dissertation Reader (AC)
Taj Dyson, Rachel Gruenke, Yuka Nakato -
Postdoctoral Faculty Sponsor
Chiara Salemi, Maria Simanovskaia -
Doctoral Dissertation Advisor (AC)
Jason Corbin, Ameya Kunder, Nicholas Rapidis, Jyotirmai Singh, Cady van Assendelft
All Publications
-
The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and Its Implications for Structure Growth
ASTROPHYSICAL JOURNAL
2024; 962 (2)
View details for DOI 10.3847/1538-4357/acfe06
View details for Web of Science ID 001184986700001
-
The Atacama Cosmology Telescope: DR6 Gravitational Lensing Map and Cosmological Parameters
ASTROPHYSICAL JOURNAL
2024; 962 (2)
View details for DOI 10.3847/1538-4357/acff5f
View details for Web of Science ID 001173957900001
-
Quantum Diamonds at the Beach: Chemical Insights into Silica Growth on Nanoscale Diamond using Multimodal Characterization and Simulation.
ACS nanoscience Au
2023; 3 (6): 462-474
Abstract
Surface chemistry of materials that host quantum bits such as diamond is an important avenue of exploration as quantum computation and quantum sensing platforms mature. Interfacing diamond in general and nanoscale diamond (ND) in particular with silica is a potential route to integrate room temperature quantum bits into photonic devices, fiber optics, cells, or tissues with flexible functionalization chemistry. While silica growth on ND cores has been used successfully for quantum sensing and biolabeling, the surface mechanism to initiate growth was unknown. This report describes the surface chemistry responsible for silica bond formation on diamond and uses X-ray absorption spectroscopy (XAS) to probe the diamond surface chemistry and its electronic structure with increasing silica thickness. A modified Stöber (Cigler) method was used to synthesize 2-35 nm thick shells of SiO2 onto carboxylic acid-rich ND cores. The diamond morphology, surface, and electronic structure were characterized by overlapping techniques including electron microscopy. Importantly, we discovered that SiO2 growth on carboxylated NDs eliminates the presence of carboxylic acids and that basic ethanolic solutions convert the ND surface to an alcohol-rich surface prior to silica growth. The data supports a mechanism that alcohols on the ND surface generate silyl-ether (ND-O-Si-(OH)3) bonds due to rehydroxylation by ammonium hydroxide in ethanol. The suppression of the diamond electronic structure as a function of SiO2 thickness was observed for the first time, and a maximum probing depth of ∼14 nm was calculated. XAS spectra based on the Auger electron escape depth was modeled using the NIST database for the Simulation of Electron Spectra for Surface Analysis (SESSA) to support our experimental results. Additionally, resonant inelastic X-ray scattering (RIXS) maps produced by the transition edge sensor reinforces the chemical analysis provided by XAS. Researchers using diamond or high-pressure high temperature (HPHT) NDs and other exotic materials (e.g., silicon carbide or cubic-boron nitride) for quantum sensing applications may exploit these results to design new layered or core-shell quantum sensors by forming covalent bonds via surface alcohol groups.
View details for DOI 10.1021/acsnanoscienceau.3c00033
View details for PubMedID 38144705
View details for PubMedCentralID PMC10740120
-
Measurement of gravitational lensing of the cosmic microwave background using SPT-3G 2018 data
PHYSICAL REVIEW D
2023; 108 (12)
View details for DOI 10.1103/PhysRevD.108.122005
View details for Web of Science ID 001178891900001
-
BICEP Array: 150 GHz Detector Module Development
JOURNAL OF LOW TEMPERATURE PHYSICS
2023; 213 (5-6): 317-326
View details for DOI 10.1007/s10909-023-03005-w
View details for Web of Science ID 001079610300001
-
Quantum Diamonds at the Beach: Chemical Insights into Silica Growth on Nanoscale Diamond using Multimodal Characterization and Simulation
ACS NANOSCIENCE AU
2023
View details for DOI 10.1021/acsnanoscienceau.3c00033
View details for Web of Science ID 001068451100001
-
Measurements of DC SQUID Damping Effects on Superconducting Resonant Circuits
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2023; 33 (5)
View details for DOI 10.1109/TASC.2023.3261261
View details for Web of Science ID 001037429500003
-
BICEP/Keck. XVII. Line-of-sight Distortion Analysis: Estimates of Gravitational Lensing, Anisotropic Cosmic Birefringence, Patchy Reionization, and Systematic Errors
ASTROPHYSICAL JOURNAL
2023; 949 (2)
View details for DOI 10.3847/1538-4357/acc85c
View details for Web of Science ID 000995086500001
-
Plastic Laminate Antireflective Coatings for Millimeter-Wave Optics in BICEP Array
JOURNAL OF LOW TEMPERATURE PHYSICS
2023
View details for DOI 10.1007/s10909-023-02967-1
View details for Web of Science ID 000992348500001
-
BICEP/Keck. XVI. Characterizing Dust Polarization through Correlations with Neutral Hydrogen
ASTROPHYSICAL JOURNAL
2023; 945 (1)
View details for DOI 10.3847/1538-4357/acb64c
View details for Web of Science ID 000951183700001
-
Simultaneous Millimeter-wave, Gamma-Ray, and Optical Monitoring of the Blazar PKS 2326-502 during a Flaring State
ASTROPHYSICAL JOURNAL LETTERS
2023; 945 (2)
View details for DOI 10.3847/2041-8213/acbf45
View details for Web of Science ID 000948717400001
-
The Athena X-ray Integral Field Unit: a consolidated design for the system requirement review of the preliminary definition phase
EXPERIMENTAL ASTRONOMY
2023
View details for DOI 10.1007/s10686-022-09880-7
View details for Web of Science ID 000928356800001
-
SLAC microresonator RF (SMuRF) electronics: A tone-tracking readout system for superconducting microwave resonator arrays.
The Review of scientific instruments
2023; 94 (1): 014712
Abstract
We describe the newest generation of the SLAC Microresonator RF (SMuRF) electronics, a warm digital control and readout system for microwave-frequency resonator-based cryogenic detector and multiplexer systems, such as microwave superconducting quantum interference device multiplexers (mumux) or microwave kinetic inductance detectors. Ultra-sensitive measurements in particle physics and astronomy increasingly rely on large arrays of cryogenic sensors, which in turn necessitate highly multiplexed readout and accompanying room-temperature electronics. Microwave-frequency resonators are a popular tool for cryogenic multiplexing, with the potential to multiplex thousands of detector channels on one readout line. The SMuRF system provides the capability for reading out up to 3328 channels across a 4-8GHz bandwidth. Notably, the SMuRF system is unique in its implementation of a closed-loop tone-tracking algorithm that minimizes RF power transmitted to the cold amplifier, substantially relaxing system linearity requirements and effective noise from intermodulation products. Here, we present a description of the hardware, firmware, and software systems of the SMuRF electronics, comparing achieved performance with science-driven design requirements. In particular, we focus on the case of large-channel-count, low-bandwidth applications, but the system has been easily reconfigured for high-bandwidth applications. The system described here has been successfully deployed in lab settings and field sites around the world and is baselined for use on upcoming large-scale observatories.
View details for DOI 10.1063/5.0125084
View details for PubMedID 36725567
-
Proposal for a definitive search for GUT-scale QCD axions
PHYSICAL REVIEW D
2022; 106 (11)
View details for DOI 10.1103/PhysRevD.106.112003
View details for Web of Science ID 000898923400001
-
Projected sensitivity of DMRadio-m3: A search for the QCD axion below 1 mu eV
PHYSICAL REVIEW D
2022; 106 (10)
View details for DOI 10.1103/PhysRevD.106.103008
View details for Web of Science ID 000887229300001
-
Asteroid Measurements at Millimeter Wavelengths with the South Pole Telescope
ASTROPHYSICAL JOURNAL
2022; 936 (2)
View details for DOI 10.3847/1538-4357/ac89ec
View details for Web of Science ID 000853754300001
-
In-Flight Gain Monitoring of SPIDER's Transition-Edge Sensor Arrays
JOURNAL OF LOW TEMPERATURE PHYSICS
2022
View details for DOI 10.1007/s10909-022-02729-5
View details for Web of Science ID 000795029200001
-
A Simulation-based Method for Correcting Mode Coupling in CMB Angular Power Spectra
ASTROPHYSICAL JOURNAL
2022; 928 (2)
View details for DOI 10.3847/1538-4357/ac562f
View details for Web of Science ID 000775518100001
-
A Constraint on Primordial B-modes from the First Flight of the Spider Balloon-borne Telescope
ASTROPHYSICAL JOURNAL
2022; 927 (2)
View details for DOI 10.3847/1538-4357/ac20df
View details for Web of Science ID 000768515600001
-
BICEP/Keck XV: The BICEP3 Cosmic Microwave Background Polarimeter and the First Three-year Data Set
ASTROPHYSICAL JOURNAL
2022; 927 (1)
View details for DOI 10.3847/1538-4357/ac4886
View details for Web of Science ID 000765541600001
-
The Design and Integrated Performance of SPT-3G
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2022; 258 (2)
View details for DOI 10.3847/1538-4365/ac374f
View details for Web of Science ID 000753145900001
-
CMB-S4: Forecasting Constraints on Primordial Gravitational Waves
ASTROPHYSICAL JOURNAL
2022; 926 (1)
View details for DOI 10.3847/1538-4357/ac1596
View details for Web of Science ID 000754057900001
-
BICEP/Keck XIV: Improved constraints on axionlike polarization oscillations in the cosmic microwave background
PHYSICAL REVIEW D
2022; 105 (2)
View details for DOI 10.1103/PhysRevD.105.022006
View details for Web of Science ID 000749582300001
-
Metastable Brominated Nanodiamond Surface Enables Room Temperature and Catalysis-Free Amine Chemistry.
The journal of physical chemistry letters
1800: 1147-1158
Abstract
Bromination of high-pressure, high-temperature (HPHT) nanodiamond (ND) surfaces has not been explored and can open new avenues for increased chemical reactivity and diamond lattice covalent bond formation. The large bond dissociation energy of the diamond lattice-oxygen bond is a challenge that prevents new bonds from forming, and most researchers simply use oxygen-terminated NDs (alcohols and acids) as reactive species. In this work, we transformed a tertiary-alcohol-rich ND surface to an amine surface with 50% surface coverage and was limited by the initial rate of bromination. We observed that alkyl bromide moieties are highly labile on HPHT NDs and are metastable as previously found using density functional theory. The strong leaving group properties of the alkyl bromide intermediate were found to form diamond-nitrogen bonds at room temperature and without catalysts. This robust pathway to activate a chemically inert ND surface broadens the modalities for surface termination, and the unique surface properties of brominated and aminated NDs are impactful to researchers for chemically tuning diamond for quantum sensing or biolabeling applications.
View details for DOI 10.1021/acs.jpclett.1c04090
View details for PubMedID 35084184
-
Performance and characterization of the SPT-3G digital frequency-domain multiplexed readout system using an improved noise and crosstalk model
JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS
2022; 8 (1)
View details for DOI 10.1117/1.JATIS.8.1.014001
View details for Web of Science ID 000780829700026
-
Improved Polarization Calibration of the BICEP3 CMB Polarimeter at the South Pole
SPIE-INT SOC OPTICAL ENGINEERING. 2022
View details for DOI 10.1117/12.2620212
View details for Web of Science ID 000864182000068
-
2022 Upgrade and Improved Low Frequency Camera Sensitivity for CMB Observation at the South Pole
SPIE-INT SOC OPTICAL ENGINEERING. 2022
View details for DOI 10.1117/12.2628058
View details for Web of Science ID 000864182000039
-
Thermal Testing for Cryogenic CMB Instrument Optical Design
SPIE-INT SOC OPTICAL ENGINEERING. 2022
View details for DOI 10.1117/12.2629490
View details for Web of Science ID 000864182000066
-
Optimal Cosmic Microwave Background Lensing Reconstruction and Parameter Estimation with SPTpol Data
ASTROPHYSICAL JOURNAL
2021; 922 (2)
View details for DOI 10.3847/1538-4357/ac02bb
View details for Web of Science ID 000727020500001
-
The XFaster Power Spectrum and Likelihood Estimator for the Analysis of Cosmic Microwave Background Maps
ASTROPHYSICAL JOURNAL
2021; 922 (2)
View details for DOI 10.3847/1538-4357/ac230b
View details for Web of Science ID 000722398000001
-
Constraints on Lambda CDM extensions from the SPT-3G 2018 EE and TE power spectra
PHYSICAL REVIEW D
2021; 104 (8)
View details for DOI 10.1103/PhysRevD.104.083509
View details for Web of Science ID 000704639900004
-
Detection of Galactic and Extragalactic Millimeter-wavelength Transient Sources with SPT-3G
ASTROPHYSICAL JOURNAL
2021; 916 (2)
View details for DOI 10.3847/1538-4357/ac06a3
View details for Web of Science ID 000680667500001
-
Performance of a Broad-Band, High-Resolution, Transition-Edge Sensor Spectrometer for X-ray Astrophysics
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2021; 31 (5)
View details for DOI 10.1109/TASC.2021.3061918
View details for Web of Science ID 000696093100010
-
Mitigation of Finite Bandwidth Effects in Time-Division-Multiplexed SQUID Readout of TES Arrays
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2021; 31 (5)
View details for DOI 10.1109/TASC.2021.3065279
View details for Web of Science ID 000749843300001
-
Search for dark photon dark matter: Dark E field radio pilot experiment
PHYSICAL REVIEW D
2021; 104 (1)
View details for DOI 10.1103/PhysRevD.104.012013
View details for Web of Science ID 000680434500001
-
Measurements of the E-mode polarization and temperature-E-mode correlation of the CMB from SPT-3G 2018 data
PHYSICAL REVIEW D
2021; 104 (2)
View details for DOI 10.1103/PhysRevD.104.022003
View details for Web of Science ID 000672782800001
-
BICEP/Keck XII: Constraints on axionlike polarization oscillations in the cosmic microwave background
PHYSICAL REVIEW D
2021; 103 (4)
View details for DOI 10.1103/PhysRevD.103.042002
View details for Web of Science ID 000617796700001
-
An Improved Measurement of the Secondary Cosmic Microwave Background Anisotropies from the SPT-SZ plus SPTpol Surveys
ASTROPHYSICAL JOURNAL
2021; 908 (2)
View details for DOI 10.3847/1538-4357/abd407
View details for Web of Science ID 000621483600001
-
A demonstration of improved constraints on primordial gravitational waves with delensing
PHYSICAL REVIEW D
2021; 103 (2)
View details for DOI 10.1103/PhysRevD.103.022004
View details for Web of Science ID 000612139800001
-
Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season.
Physical review letters
2021; 127 (15): 151301
Abstract
We present results from an analysis of all data taken by the BICEP2, Keck Array, and BICEP3 CMB polarization experiments up to and including the 2018 observing season. We add additional Keck Array observations at 220 GHz and BICEP3 observations at 95 GHz to the previous 95/150/220 GHz dataset. The Q/U maps now reach depths of 2.8, 2.8, and 8.8 μK_{CMB} arcmin at 95, 150, and 220 GHz, respectively, over an effective area of ≈600 square degrees at 95 GHz and ≈400 square degrees at 150 and 220 GHz. The 220 GHz maps now achieve a signal-to-noise ratio on polarized dust emission exceeding that of Planck at 353 GHz. We take auto- and cross-spectra between these maps and publicly available WMAP and Planck maps at frequencies from 23 to 353 GHz and evaluate the joint likelihood of the spectra versus a multicomponent model of lensed ΛCDM+r+dust+synchrotron+noise. The foreground model has seven parameters, and no longer requires a prior on the frequency spectral index of the dust emission taken from measurements on other regions of the sky. This model is an adequate description of the data at the current noise levels. The likelihood analysis yields the constraint r_{0.05}<0.036 at 95% confidence. Running maximum likelihood search on simulations we obtain unbiased results and find that σ(r)=0.009. These are the strongest constraints to date on primordial gravitational waves.
View details for DOI 10.1103/PhysRevLett.127.151301
View details for PubMedID 34678017
-
Depth-dependent valence stratification driven by oxygen redox in lithium-rich layered oxide.
Nature communications
2020; 11 (1): 6342
Abstract
Lithium-rich nickel-manganese-cobalt (LirNMC) layered material is a promising cathode for lithium-ion batteries thanks to its large energy density enabled by coexisting cation and anion redox activities. It however suffers from a voltage decay upon cycling, urging for an in-depth understanding of the particle-level structure and chemical complexity. In this work, we investigate the Li1.2Ni0.13Mn0.54Co0.13O2 particles morphologically, compositionally, and chemically in three-dimensions. While the composition is generally uniform throughout the particle, the charging induces a strong depth dependency in transition metal valence. Such a valence stratification phenomenon is attributed to the nature of oxygen redox which is very likely mostly associated with Mn. The depth-dependent chemistry could be modulated by the particles' core-multi-shell morphology, suggesting a structural-chemical interplay. These findings highlight the possibility of introducing a chemical gradient to address the oxygen-loss-induced voltage fade in LirNMC layered materials.
View details for DOI 10.1038/s41467-020-20198-w
View details for PubMedID 33311507
-
The Atacama Cosmology Telescope: a measurement of the Cosmic Microwave Background power spectra at 98 and 150 GHz
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2020
View details for DOI 10.1088/1475-7516/2020/12/045
View details for Web of Science ID 000609105900031
-
The Atacama Cosmology Telescope: DR4 maps and cosmological parameters
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2020
View details for DOI 10.1088/1475-7516/2020/12/047
View details for Web of Science ID 000609105900033
-
SQUIDs and Transition-Edge Sensors
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
2020
View details for DOI 10.1007/s10948-020-05730-9
View details for Web of Science ID 000584961700003
-
Searching for anisotropic cosmic birefringence with polarization data from SPTpol
PHYSICAL REVIEW D
2020; 102 (8)
View details for DOI 10.1103/PhysRevD.102.083504
View details for Web of Science ID 000574778000002
-
Measurements of B-mode polarization of the cosmic microwave background from 500 square degrees of SPTpol data
PHYSICAL REVIEW D
2020; 101 (12)
View details for DOI 10.1103/PhysRevD.101.122003
View details for Web of Science ID 000541705000001
-
Chemical control of competing electron transfer pathways in iron tetracyano-polypyridyl photosensitizers
CHEMICAL SCIENCE
2020; 11 (17): 4360–73
View details for DOI 10.1039/c9sc06272f
View details for Web of Science ID 000532365500005
-
Particle Response of Antenna-Coupled TES Arrays: Results from SPIDER and the Laboratory
JOURNAL OF LOW TEMPERATURE PHYSICS
2020; 199 (3-4): 1127–36
View details for DOI 10.1007/s10909-020-02415-4
View details for Web of Science ID 000531902200067
-
Microwave Multiplexing on the Keck Array
JOURNAL OF LOW TEMPERATURE PHYSICS
2020; 199 (3-4): 858–66
View details for DOI 10.1007/s10909-019-02296-2
View details for Web of Science ID 000531902200035
-
Chemical control of competing electron transfer pathways in iron tetracyano-polypyridyl photosensitizers.
Chemical science
2020; 11 (17): 4360-4373
Abstract
Photoinduced intramolecular electron transfer dynamics following metal-to-ligand charge-transfer (MLCT) excitation of [Fe(CN)4(2,2'-bipyridine)]2- (1), [Fe(CN)4(2,3-bis(2-pyridyl)pyrazine)]2- (2) and [Fe(CN)4(2,2'-bipyrimidine)]2- (3) were investigated in various solvents with static and time-resolved UV-Visible absorption spectroscopy and Fe 2p3d resonant inelastic X-ray scattering (RIXS). This series of polypyridyl ligands, combined with the strong solvatochromism of the complexes, enables the 1MLCT vertical energy to be varied from 1.64 eV to 2.64 eV and the 3MLCT lifetime to range from 180 fs to 67 ps. The 3MLCT lifetimes in 1 and 2 decrease exponentially as the MLCT energy increases, consistent with electron transfer to the lowest energy triplet metal-centred (3MC) excited state, as established by the Tanabe-Sugano analysis of the Fe 2p3d RIXS data. In contrast, the 3MLCT lifetime in 3 changes non-monotonically with MLCT energy, exhibiting a maximum. This qualitatively distinct behaviour results from a competing 3MLCT → ground state (GS) electron transfer pathway that exhibits energy gap law behaviour. The 3MLCT → GS pathway involves nuclear tunnelling for the high-frequency polypyridyl breathing mode (hν = 1530 cm-1), which is most displaced for complex 3, making this pathway significantly more efficient. Our study demonstrates that the excited state relaxation mechanism of Fe polypyridyl photosensitizers can be readily tuned by ligand and solvent environment. Furthermore, our study reveals that extending charge transfer lifetimes requires control of the relative energies of the 3MLCT and the 3MC states and suppression of the intramolecular distortion of the acceptor ligand in the 3MLCT excited state.
View details for DOI 10.1039/c9sc06272f
View details for PubMedID 34122894
View details for PubMedCentralID PMC8159445
-
Performance of Al-Mn Transition-Edge Sensor Bolometers in SPT-3G
SPRINGER/PLENUM PUBLISHERS. 2020: 320–29
View details for DOI 10.1007/s10909-019-02259-7
View details for Web of Science ID 000525958700042
-
Broadband, millimeter-wave antireflection coatings for large-format, cryogenic aluminum oxide optics
APPLIED OPTICS
2020; 59 (10): 3285–95
View details for DOI 10.1364/AO.383921
View details for Web of Science ID 000526531100056
-
On-Sky Performance of the SPT-3G Frequency-Domain Multiplexed Readout
SPRINGER/PLENUM PUBLISHERS. 2020: 182–91
View details for DOI 10.1007/s10909-019-02280-w
View details for Web of Science ID 000525958700024
-
Planar Self-similar Antennas for Broadband Millimeter-Wave Measurements
JOURNAL OF LOW TEMPERATURE PHYSICS
2020
View details for DOI 10.1007/s10909-020-02427-0
View details for Web of Science ID 000518479400002
-
Galaxy Clusters Selected via the Sunyaev-Zel'dovich Effect in the SPTpol 100-square-degree Survey
ASTRONOMICAL JOURNAL
2020; 159 (3)
View details for DOI 10.3847/1538-3881/ab6a96
View details for Web of Science ID 000522479000019
-
The SPTpol Extended Cluster Survey
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2020; 247 (1)
View details for DOI 10.3847/1538-4365/ab6993
View details for Web of Science ID 000519104700001
-
Characterizing the Sensitivity of 40 GHz TES Bolometers for BICEP Array
JOURNAL OF LOW TEMPERATURE PHYSICS
2020
View details for DOI 10.1007/s10909-020-02411-8
View details for Web of Science ID 000516400800011
-
Optical Design and Characterization of 40-GHz Detector and Module for the BICEP Array
JOURNAL OF LOW TEMPERATURE PHYSICS
2020
View details for DOI 10.1007/s10909-019-02299-z
View details for Web of Science ID 000516400800007
-
Optical Characterization of the Keck Array and BICEP3 CMB Polarimeters from 2016 to 2019
JOURNAL OF LOW TEMPERATURE PHYSICS
2020
View details for DOI 10.1007/s10909-020-02392-8
View details for Web of Science ID 000516400800006
-
Count Rate Optimizations for TES Detectors at a Femtosecond X-ray Laser
JOURNAL OF LOW TEMPERATURE PHYSICS
2020
View details for DOI 10.1007/s10909-020-02379-5
View details for Web of Science ID 000516185900003
-
Design and Performance of the First BICEP Array Receiver
JOURNAL OF LOW TEMPERATURE PHYSICS
2020
View details for DOI 10.1007/s10909-020-02394-6
View details for Web of Science ID 000516185900004
-
Constraints on Cosmological Parameters from the 500 deg(2) SPTPOL Lensing Power Spectrum
ASTROPHYSICAL JOURNAL
2020; 888 (2)
View details for DOI 10.3847/1538-4357/ab6082
View details for Web of Science ID 000520568800001
-
Fractional polarization of extragalactic sources in the 500 deg(2) SPTpol survey
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2019; 490 (4): 5712–21
View details for DOI 10.1093/mnras/stz2905
View details for Web of Science ID 000504000300092
-
Detection of CMB-Cluster Lensing using Polarization Data from SPTpol.
Physical review letters
2019; 123 (18): 181301
Abstract
We report the first detection of gravitational lensing due to galaxy clusters using only the polarization of the cosmic microwave background (CMB). The lensing signal is obtained using a new estimator that extracts the lensing dipole signature from stacked images formed by rotating the cluster-centered Stokes QU map cutouts along the direction of the locally measured background CMB polarization gradient. Using data from the SPTpol 500 deg^{2} survey at the locations of roughly 18 000 clusters with richness λ≥10 from the Dark Energy Survey (DES) Year-3 full galaxy cluster catalog, we detect lensing at 4.8σ. The mean stacked mass of the selected sample is found to be (1.43±0.40)×10^{14}M_{⊙} which is in good agreement with optical weak lensing based estimates using DES data and CMB-lensing based estimates using SPTpol temperature data. This measurement is a key first step for cluster cosmology with future low-noise CMB surveys, like CMB-S4, for which CMB polarization will be the primary channel for cluster lensing measurements.
View details for DOI 10.1103/PhysRevLett.123.181301
View details for PubMedID 31763885
-
Detection of CMB-Cluster Lensing using Polarization Data from SPTpol
PHYSICAL REVIEW LETTERS
2019; 123 (18)
View details for DOI 10.1103/PhysRevLett.123.181301
View details for Web of Science ID 000493502800006
-
BICEP2/Keck Array XI: Beam Characterization and Temperature-to-Polarization Leakage in the BK15 Data Set
ASTROPHYSICAL JOURNAL
2019; 884 (2)
View details for DOI 10.3847/1538-4357/ab391d
View details for Web of Science ID 000501761200005
-
A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg(2) of SPTpol Temperature and Polarization Data
ASTROPHYSICAL JOURNAL
2019; 884 (1)
View details for DOI 10.3847/1538-4357/ab4186
View details for Web of Science ID 000501729400002
-
Synthesis of a copper-supported triplet nitrene complex pertinent to copper-catalyzed amination.
Science (New York, N.Y.)
2019; 365 (6458): 1138–43
Abstract
Terminal copper-nitrenoid complexes have inspired interest in their fundamental bonding structures as well as their putative intermediacy in catalytic nitrene-transfer reactions. Here, we report that aryl azides react with a copper(I) dinitrogen complex bearing a sterically encumbered dipyrrin ligand to produce terminal copper nitrene complexes with near-linear, short copper-nitrenoid bonds [1.745(2) to 1.759(2) angstroms]. X-ray absorption spectroscopy and quantum chemistry calculations reveal a predominantly triplet nitrene adduct bound to copper(I), as opposed to copper(II) or copper(III) assignments, indicating the absence of a copper-nitrogen multiple-bond character. Employing electron-deficient aryl azides renders the copper nitrene species competent for alkane amination and alkene aziridination, lending further credence to the intermediacy of this species in proposed nitrene-transfer mechanisms.
View details for DOI 10.1126/science.aax4423
View details for PubMedID 31515388
-
Sub-Kelvin cooling for two kilopixel bolometer arrays in the PIPER receiver.
The Review of scientific instruments
2019; 90 (9): 095104
Abstract
The Primordial Inflation Polarization Explorer (PIPER) is a balloon-borne telescope mission to search for inflationary gravitational waves from the early universe. PIPER employs two 32 * 40 arrays of superconducting transition-edge sensors, which operate at 100 mK. An open bucket Dewar of liquid helium maintains the receiver and telescope optics at 1.7 K. We describe the thermal design of the receiver and sub-Kelvin cooling with a continuous adiabatic demagnetization refrigerator (CADR). The CADR operates between 70 and 130 mK and provides 10 muW cooling power at 100 mK, nearly five times the loading of the two detector assemblies. We describe electronics and software to robustly control the CADR, overall CADR performance in flightlike integrated receiver testing, and practical considerations for implementation in the balloon float environment.
View details for DOI 10.1063/1.5108649
View details for PubMedID 31575233
-
Optimization of Time- and Code-Division-Multiplexed Readout for Athena X-IFU
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2019; 29 (5)
View details for DOI 10.1109/TASC.2019.2905577
View details for Web of Science ID 000466069100001
-
Demonstration of Athena X-IFU Compatible 40-Row Time-Division-Multiplexed Readout
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2019; 29 (5)
View details for DOI 10.1109/TASC.2019.2904472
View details for Web of Science ID 000466478300001
-
Use of Transition Models to Design High Performance TESs for the LCLS-II Soft X-Ray Spectrometer
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2019; 29 (5)
View details for DOI 10.1109/TASC.2019.2903032
View details for Web of Science ID 000466067800001
-
High-Throughput, DC-Parametric Evaluation of Flux-Activated-Switch-Based TDM and CDM SQUID Multiplexers
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2019; 29 (5)
View details for DOI 10.1109/TASC.2019.2904594
View details for Web of Science ID 000466069600001
-
Two-Level Switches for Advanced Time-Division Multiplexing
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2019; 29 (5)
View details for DOI 10.1109/TASC.2019.2903394
View details for Web of Science ID 000463625600001
-
Demonstration of Athena X-IFU Compatible 40-Row Time-Division-Multiplexed Readout.
IEEE transactions on applied superconductivity : a publication of the IEEE Superconductivity Committee
2019; 29 (5)
Abstract
Time-division multiplexing (TDM) is the backup readout technology for the X-ray Integral Field Unit (X-IFU), a 3,168-pixel X-ray transition-edge sensor (TES) array that will provide imaging spectroscopy for ESA's Athena satellite mission. X-0IFU design studies are considering readout with a multiplexing factor of up to 40. We present data showing 40-row TDM readout (32 TES rows + 8 repeats of the last row) of TESs that are of the same type as those being planned for X-IFU, using measurement and analysis parameters within the ranges specified for X-IFU. Singlecolumn TDM measurements have best-fit energy resolution of (1.91 ± 0.01) eV for the Al Kα complex (1.5 keV), (2.10 ± 0.02) eV for Ti Kα (4.5 keV), (2.23 ± 0.02) eV for Mn Kα (5.9 keV), (2.40 ± 0.02) eV for Co Kα (6.9 keV), and (3.44 ± 0.04) eV for Br Kα (11.9 keV). Three-column measurements have best-fit resolution of (2.03 ± 0.01) eV for Ti Kα and (2.40 ± 0.01) eV for Co Kα. The degradation due to the multiplexed readout ranges from 0.1 eV at the lower end of the energy range to 0.5 eV at the higher end. The demonstrated performance meets X-IFU's energy-resolution and energy-range requirements. True 40-row TDM readout, without repeated rows, of kilopixel scale arrays of X-IFU-like TESs is now under development.
View details for DOI 10.1109/TASC.2019.2904472
View details for PubMedID 31160861
View details for PubMedCentralID PMC6544157
-
Comparison of NIST SA13a and SA4b SQUID Array Amplifiers (vol 193, pg 600, 2019)
JOURNAL OF LOW TEMPERATURE PHYSICS
2019; 196 (3-4): 410
View details for DOI 10.1007/s10909-018-2083-0
View details for Web of Science ID 000475763900007
-
Lynx x-ray microcalorimeter.
Journal of astronomical telescopes, instruments, and systems
2019; 5 (2): 021017
Abstract
Lynx is an x-ray telescope, one of four large satellite mission concepts currently being studied by NASA to be a flagship mission. One of Lynx's three instruments is an imaging spectrometer called the Lynx x-ray microcalorimeter (LXM), an x-ray microcalorimeter behind an x-ray optic with an angular resolution of 0.5 arc sec and ∼2 m2 of area at 1 keV. The LXM will provide unparalleled diagnostics of distant extended structures and, in particular, will allow the detailed study of the role of cosmic feedback in the evolution of the Universe. We discuss the baseline design of LXM and some parallel approaches for some of the key technologies. The baseline sensor technology uses transition-edge sensors, but we also consider an alternative approach using metallic magnetic calorimeters. We discuss the requirements for the instrument, the pixel layout, and the baseline readout design, which uses microwave superconducting quantum interference devices and high-electron mobility transistor amplifiers and the cryogenic cooling requirements and strategy for meeting these requirements. For each of these technologies, we discuss the current technology readiness level and our strategy for advancing them to be ready for flight. We also describe the current system design, including the block diagram, and our estimate for the mass, power, and data rate of the instrument.
View details for DOI 10.1117/1.JATIS.5.2.021017
View details for PubMedID 33442556
View details for PubMedCentralID PMC7802767
-
Microwave SQUID multiplexing for the Lynx x-ray microcalorimeter
JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS
2019; 5 (2)
View details for DOI 10.1117/1.JATIS.5.2.021007
View details for Web of Science ID 000481881700009
-
Lynx x-ray microcalorimeter
JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS
2019; 5 (2)
View details for DOI 10.1117/1.JATIS.5.2.021017
View details for Web of Science ID 000481881700019
-
Development of space-flight compatible room-temperature electronics for the Lynx x-ray microcalorimeter
JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS
2019; 5 (2)
View details for DOI 10.1117/1.JATIS.5.2.021013
View details for Web of Science ID 000481881700015
-
Optimization of Time- and Code-Division-Multiplexed Readout for Athena X-IFU.
IEEE transactions on applied superconductivity : a publication of the IEEE Superconductivity Committee
2019; 29 (5)
Abstract
Readout of a large, spacecraft-based array of superconducting transition-edge sensors (TESs) requires careful management of the layout area and power dissipation of the cryogenic-circuit components. We present three optimizations of our time- (TDM) and code-division-multiplexing (CDM) systems for the X-ray Integral Field Unit (X-IFU), a several-thousand-pixel-TES array for the planned Athena-satellite mission. The first optimization is a new readout scheme that is a hybrid of CDM and TDM. This C/TDM architecture balances CDM's noise advantage with TDM's layout compactness. The second is a redesign of a component: the shunt resistor that provides a dc-voltage bias to the TESs. A new layout and a thicker Pd-Au resistive layer combine to reduce this resistor's area by more than a factor of 5. Third, we have studied the power dissipated by the first-stage SQUIDs (superconducting quantum-interference devices) and the readout noise versus the critical current of the first-stage SqUIDs. As a result, the X-IFU TDM and C/TDM SQUIDs will have a specified junction critical current of 5 μA. Based on these design optimizations and TDM experiments described by Durkin, et al. (these proceedings), TDM meets all requirements to be X-IFU's backup-readout option. Hybrid C/TDM is another viable option that could save spacecraft resources.
View details for DOI 10.1109/TASC.2019.2905577
View details for PubMedID 31360051
View details for PubMedCentralID PMC6662226
-
Hybrid X-ray Spectroscopy-Based Approach To Acquire Chemical and Structural Information of Single-Walled Carbon Nanotubes with Superior Sensitivity
JOURNAL OF PHYSICAL CHEMISTRY C
2019; 123 (10): 6114–20
View details for DOI 10.1021/acs.jpcc.9b00714
View details for Web of Science ID 000461537400032
-
LiteBIRD: A Satellite for the Studies of B-Mode Polarization and Inflation from Cosmic Background Radiation Detection
SPRINGER/PLENUM PUBLISHERS. 2019: 443–52
View details for DOI 10.1007/s10909-019-02150-5
View details for Web of Science ID 000464746800011
-
Mass Calibration of Optically Selected DES Clusters Using a Measurement of CMB-cluster Lensing with SPTpol Data
ASTROPHYSICAL JOURNAL
2019; 872 (2)
View details for DOI 10.3847/1538-4357/ab01ca
View details for Web of Science ID 000459323800023
-
The Simons Observatory: science goals and forecasts
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2019
View details for DOI 10.1088/1475-7516/2019/02/056
View details for Web of Science ID 000459991200002
-
Surface-to-Bulk Redox Coupling through Thermally Driven Li Redistribution in Li- and Mn-Rich Layered Cathode Materials.
Journal of the American Chemical Society
2019
Abstract
Li- and Mn-rich (LMR) layered cathode materials have demonstrated impressive capacity and specific energy density thanks to their intertwined redox centers including transition metal cations and oxygen anions. Although tremendous efforts have been devoted to the investigation of the electrochemically driven redox evolution in LMR cathode at ambient temperature, their behavior under a mildly elevated temperature (up to ∼100 °C), with or without electrochemical driving force, remains largely unexplored. Here we show a systematic study of the thermally driven surface-to-bulk redox coupling effect in charged Li1.2Ni0.15Co0.1Mn0.55O2. We for the first time observed a charge transfer between the bulk oxygen anions and the surface transition metal cations under ∼100 °C, which is attributed to the thermally driven redistribution of Li ions. This finding highlights the nonequilibrium state and dynamic nature of the LMR material at deeply delithiated state upon a mild temperature perturbation.
View details for DOI 10.1021/jacs.9b05349
View details for PubMedID 31287957
-
Use of Transition Models to Design High Performance TESs for the LCLS-II Soft X-Ray Spectrometer.
IEEE transactions on applied superconductivity : a publication of the IEEE Superconductivity Committee
2019; 29 (5)
Abstract
We are designing an array of transition-edge sensor (TES) microcalorimeters for a soft X-ray spectrometer at the Linac Coherent Light Source at SLAC National Accelerator Laboratory to coincide with upgrades to the free electron laser facility. The complete spectrometer will have 1000 TES pixels with energy resolution of 0.5 eV full-width at half-maximum (FWHM) for incident energies below 1 keV while maintaining pulse decay-time constants shorter than 100 μs. Historically, TES pixels have often been designed for a particular scientific application via a combination of simple scaling relations and trial-and-error experimentation with device geometry. We have improved upon this process by using our understanding of transition physics to guide TES design. Using the two-fluid approximation of the phase-slip line model for TES resistance, we determine how the geometry and critical temperature of a TES will affect the shape of the transition. We have used these techniques to design sensors with a critical temperature of 55 mK. The best sensors achieve an energy resolution of 0.75 eV FWHM at 1.25 keV. Building upon this result, we show how the next generation of sensors can be designed to reach our goal of 0.5 eV resolution.
View details for DOI 10.1109/tasc.2019.2903032
View details for PubMedID 33456289
View details for PubMedCentralID PMC7808210
-
Soft X-ray spectroscopy with transition-edge sensors at Stanford Synchrotron Radiation Lightsource beamline 10-1.
The Review of scientific instruments
2019; 90 (11): 113101
Abstract
We present results obtained with a new soft X-ray spectrometer based on transition-edge sensors (TESs) composed of Mo/Cu bilayers coupled to bismuth absorbers. This spectrometer simultaneously provides excellent energy resolution, high detection efficiency, and broadband spectral coverage. The new spectrometer is optimized for incident X-ray energies below 2 keV. Each pixel serves as both a highly sensitive calorimeter and an X-ray absorber with near unity quantum efficiency. We have commissioned this 240-pixel TES spectrometer at the Stanford Synchrotron Radiation Lightsource beamline 10-1 (BL 10-1) and used it to probe the local electronic structure of sample materials with unprecedented sensitivity in the soft X-ray regime. As mounted, the TES spectrometer has a maximum detection solid angle of 2 × 10-3 sr. The energy resolution of all pixels combined is 1.5 eV full width at half maximum at 500 eV. We describe the performance of the TES spectrometer in terms of its energy resolution and count-rate capability and demonstrate its utility as a high throughput detector for synchrotron-based X-ray spectroscopy. Results from initial X-ray emission spectroscopy and resonant inelastic X-ray scattering experiments obtained with the spectrometer are presented.
View details for DOI 10.1063/1.5119155
View details for PubMedID 31779391
-
Impact of Electrical Contacts Design and Materials on the Stability of Ti Superconducting Transition Shape
JOURNAL OF LOW TEMPERATURE PHYSICS
2018; 193 (5-6): 732–38
View details for DOI 10.1007/s10909-018-2040-y
View details for Web of Science ID 000451734500012
-
280 GHz Focal Plane Unit Design and Characterization for the SPIDER-2 Suborbital Polarimeter
JOURNAL OF LOW TEMPERATURE PHYSICS
2018; 193 (5-6): 1075–84
View details for DOI 10.1007/s10909-018-2065-2
View details for Web of Science ID 000451734500056
-
TES X-ray Spectrometer at SLAC LCLS-II
JOURNAL OF LOW TEMPERATURE PHYSICS
2018; 193 (5-6): 1287–97
View details for DOI 10.1007/s10909-018-2053-6
View details for Web of Science ID 000451734500084
-
HAWC+, the Far-Infrared Camera and Polarimeter for SOFIA
JOURNAL OF ASTRONOMICAL INSTRUMENTATION
2018; 7 (4)
View details for DOI 10.1142/S2251171718400081
View details for Web of Science ID 000454308700009
-
The LiteBIRD Satellite Mission: Sub-Kelvin Instrument
JOURNAL OF LOW TEMPERATURE PHYSICS
2018; 193 (5-6): 1048–56
View details for DOI 10.1007/s10909-018-1947-7
View details for Web of Science ID 000451734500053
-
Fabrication of Detector Arrays for the SPT-3G Receiver
JOURNAL OF LOW TEMPERATURE PHYSICS
2018; 193 (5-6): 703–11
View details for DOI 10.1007/s10909-018-1924-1
View details for Web of Science ID 000451734500008
-
SPT-3G: A Multichroic Receiver for the South Pole Telescope
JOURNAL OF LOW TEMPERATURE PHYSICS
2018; 193 (5-6): 1057–65
View details for DOI 10.1007/s10909-018-2007-z
View details for Web of Science ID 000451734500054
-
Thermal Links and Microstrip Transmission Lines in SPT-3G Bolometers
JOURNAL OF LOW TEMPERATURE PHYSICS
2018; 193 (5-6): 712–19
View details for DOI 10.1007/s10909-018-1907-2
View details for Web of Science ID 000451734500009
-
Design and Bolometer Characterization of the SPT-3G First-Year Focal Plane
JOURNAL OF LOW TEMPERATURE PHYSICS
2018; 193 (5-6): 1085–93
View details for DOI 10.1007/s10909-018-2057-2
View details for Web of Science ID 000451734500057
-
Tuning SPT-3G Transition-Edge-Sensor Electrical Properties with a Four-Layer Ti-Au-Ti-Au Thin-Film-Stack
JOURNAL OF LOW TEMPERATURE PHYSICS
2018; 193 (5-6): 695–702
View details for DOI 10.1007/s10909-018-1910-7
View details for Web of Science ID 000451734500007
-
Concept Study of Optical Configurations for High-Frequency Telescope for LiteBIRD
JOURNAL OF LOW TEMPERATURE PHYSICS
2018; 193 (5-6): 841–50
View details for DOI 10.1007/s10909-018-1915-2
View details for Web of Science ID 000451734500027
-
SPIDER: CMB Polarimetry from the Edge of Space
JOURNAL OF LOW TEMPERATURE PHYSICS
2018; 193 (5-6): 1112–21
View details for DOI 10.1007/s10909-018-2078-x
View details for Web of Science ID 000451734500060
-
Constraints on Primordial Gravitational Waves Using Planck, WMAP, and New BICEP2/Keck Observations through the 2015 Season.
Physical review letters
2018; 121 (22): 221301
Abstract
We present results from an analysis of all data taken by the bicep2/Keck CMB polarization experiments up to and including the 2015 observing season. This includes the first Keck Array observations at 220 GHz and additional observations at 95 and 150 GHz. The Q and U maps reach depths of 5.2, 2.9, and 26 μK_{CMB} arcmin at 95, 150, and 220 GHz, respectively, over an effective area of ≈400 square degrees. The 220 GHz maps achieve a signal to noise on polarized dust emission approximately equal to that of Planck at 353 GHz. We take auto and cross spectra between these maps and publicly available WMAP and Planck maps at frequencies from 23 to 353 GHz. We evaluate the joint likelihood of the spectra versus a multicomponent model of lensed-ΛCDM+r+dust+synchrotron+noise. The foreground model has seven parameters, and we impose priors on some of these using external information from Planck and WMAP derived from larger regions of sky. The model is shown to be an adequate description of the data at the current noise levels. The likelihood analysis yields the constraint r_{0.05}<0.07 at 95% confidence, which tightens to r_{0.05}<0.06 in conjunction with Planck temperature measurements and other data. The lensing signal is detected at 8.8σ significance. Running a maximum likelihood search on simulations we obtain unbiased results and find that σ(r)=0.020. These are the strongest constraints to date on primordial gravitational waves.
View details for DOI 10.1103/PhysRevLett.121.221301
View details for PubMedID 30547645
-
Constraints on Primordial Gravitational Waves Using Planck, WMAP, and New BICEP2/Keck Observations through the 2015 Season
PHYSICAL REVIEW LETTERS
2018; 121 (22)
View details for DOI 10.1103/PhysRevLett.121.221301
View details for Web of Science ID 000451580700006
-
The EBEX Balloon-borne Experiment-Detectors and Readout
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2018; 239 (1)
View details for DOI 10.3847/1538-4365/aae436
View details for Web of Science ID 000449417400006
-
A Spread-Spectrum SQUID Multiplexer
SPRINGER/PLENUM PUBLISHERS. 2018: 476–84
View details for DOI 10.1007/s10909-018-1987-z
View details for Web of Science ID 000447975800053
-
SLAC Microresonator Radio Frequency (SMuRF) Electronics for Read Out of Frequency-Division-Multiplexed Cryogenic Sensors
SPRINGER/PLENUM PUBLISHERS. 2018: 570–77
View details for DOI 10.1007/s10909-018-1981-5
View details for Web of Science ID 000447975800065
-
Error-Correcting Codes for Code-Division Multiplexed TES Detectors
SPRINGER/PLENUM PUBLISHERS. 2018: 556–61
View details for DOI 10.1007/s10909-018-1979-z
View details for Web of Science ID 000447975800063
-
Development of Multi-chroic MKIDs for Next-Generation CMB Polarization Studies
SPRINGER/PLENUM PUBLISHERS. 2018: 103–12
View details for DOI 10.1007/s10909-018-2032-y
View details for Web of Science ID 000447975800004
-
Magnetic Sensitivity of AlMn TESes and Shielding Considerations for Next-Generation CMB Surveys
SPRINGER/PLENUM PUBLISHERS. 2018: 288–97
View details for DOI 10.1007/s10909-018-1920-5
View details for Web of Science ID 000447975800029
-
Design and Assembly of SPT-3G Cold Readout Hardware
SPRINGER/PLENUM PUBLISHERS. 2018: 547–55
View details for DOI 10.1007/s10909-018-1965-5
View details for Web of Science ID 000447975800062
-
Optical Characterization of the SPT-3G Camera
SPRINGER/PLENUM PUBLISHERS. 2018: 305–13
View details for DOI 10.1007/s10909-018-1935-y
View details for Web of Science ID 000447975800031
-
Results from the Atacama B-mode Search (ABS) experiment
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2018
View details for DOI 10.1088/1475-7516/2018/09/005
View details for Web of Science ID 000443867300002
-
REVIEW OF PARTICLE PHYSICS Particle Data Group
PHYSICAL REVIEW D
2018; 98 (3)
View details for DOI 10.1103/PhysRevD.98.030001
View details for Web of Science ID 000442079900001
-
Measurements of the Temperature and E-mode Polarization of the CMB from 500 Square Degrees of SPTpol Data
ASTROPHYSICAL JOURNAL
2018; 852 (2)
View details for DOI 10.3847/1538-4357/aa9ff4
View details for Web of Science ID 000422716100004
-
Highly-multiplexed microwave SQUID readout using the SLAC Microresonator Radio Frequency (SMuRF) Electronics for Future CMB and Sub-millimeter Surveys
SPIE-INT SOC OPTICAL ENGINEERING. 2018
View details for DOI 10.1117/12.2314435
View details for Web of Science ID 000451719300023
-
Development of a robust, efficient process to produce scalable, superconducting kilopixel Far-IR Detector Arrays
SPIE-INT SOC OPTICAL ENGINEERING. 2018
View details for DOI 10.1117/12.2312737
View details for Web of Science ID 000451719300029
-
BICEP Array cryostat and mount design
SPIE-INT SOC OPTICAL ENGINEERING. 2018
View details for DOI 10.1117/12.2312829
View details for Web of Science ID 000451719300039
-
BICEP Array: a multi-frequency degree-scale CMB polarimeter
SPIE-INT SOC OPTICAL ENGINEERING. 2018
View details for DOI 10.1117/12.2311725
View details for Web of Science ID 000451719300005
-
Prime-Cam: A first-light instrument for the CCAT-prime telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2018
View details for DOI 10.1117/12.2313868
View details for Web of Science ID 000451719300028
-
Design and performance of wide-band corrugated walls for the BICEP Array detector modules at 30/40 GHz
SPIE-INT SOC OPTICAL ENGINEERING. 2018
View details for DOI 10.1117/12.2312942
View details for Web of Science ID 000451719300042
-
The Primordial Inflation Polarization Explorer (PIPER): Current Status and Performance of the First Flight
SPIE-INT SOC OPTICAL ENGINEERING. 2018
View details for DOI 10.1117/12.2313874
View details for Web of Science ID 000451719300004
-
2017 upgrade and performance of BICEP3: a 95GHz refracting telescope for degree-scale CMB polarization
SPIE-INT SOC OPTICAL ENGINEERING. 2018
View details for DOI 10.1117/12.2313854
View details for Web of Science ID 000451719300047
-
Ultra-Thin Large-Aperture Vacuum Windows for Millimeter Wavelengths Receivers
SPIE-INT SOC OPTICAL ENGINEERING. 2018
View details for DOI 10.1117/12.2312585
View details for Web of Science ID 000451719300045
-
Characterization and performance of the second-year SPT-3G focal plane
SPIE-INT SOC OPTICAL ENGINEERING. 2018
View details for DOI 10.1117/12.2312451
View details for Web of Science ID 000451719300033
-
Year two instrument status of the SPT-3G cosmic microwave background receiver
SPIE-INT SOC OPTICAL ENGINEERING. 2018
View details for DOI 10.1117/12.2312426
View details for Web of Science ID 000451719300001
-
Broadband anti-reflective coatings for cosmic microwave background experiments
SPIE-INT SOC OPTICAL ENGINEERING. 2018
View details for DOI 10.1117/12.2315674
View details for Web of Science ID 000451719300080
-
L-edge spectroscopy of dilute, radiation-sensitive systems using a transition-edge-sensor array
JOURNAL OF CHEMICAL PHYSICS
2017; 147 (21): 214201
Abstract
We present X-ray absorption spectroscopy and resonant inelastic X-ray scattering (RIXS) measurements on the iron L-edge of 0.5 mM aqueous ferricyanide. These measurements demonstrate the ability of high-throughput transition-edge-sensor (TES) spectrometers to access the rich soft X-ray (100-2000 eV) spectroscopy regime for dilute and radiation-sensitive samples. Our low-concentration data are in agreement with high-concentration measurements recorded by grating spectrometers. These results show that soft-X-ray RIXS spectroscopy acquired by high-throughput TES spectrometers can be used to study the local electronic structure of dilute metal-centered complexes relevant to biology, chemistry, and catalysis. In particular, TES spectrometers have a unique ability to characterize frozen solutions of radiation- and temperature-sensitive samples.
View details for PubMedID 29221417
View details for PubMedCentralID PMC5720893
-
BICEP2 / Keck Array IX: New bounds on anisotropies of CMB polarization rotation and implications for axionlike particles and primordial magnetic fields
PHYSICAL REVIEW D
2017; 96 (10)
View details for DOI 10.1103/PhysRevD.96.102003
View details for Web of Science ID 000414740300001
-
CMB Polarization B-mode Delensing with SPTpol and Herschel
ASTROPHYSICAL JOURNAL
2017; 846 (1)
View details for DOI 10.3847/1538-4357/aa82bb
View details for Web of Science ID 000408746000009
-
A New Limit on CMB Circular Polarization from SPIDER
ASTROPHYSICAL JOURNAL
2017; 844 (2)
View details for DOI 10.3847/1538-4357/aa7cfd
View details for Web of Science ID 000406841700004
-
The Atacama Cosmology Telescope: two-season ACTPol spectra and parameters
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2017
View details for DOI 10.1088/1475-7516/2017/06/031
View details for Web of Science ID 000403482400024
-
Optimization of Transition Edge Sensor Arrays for Cosmic Microwave Background Observations With the South Pole Telescope
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2017; 27 (4)
View details for DOI 10.1109/TASC.2016.2639378
View details for Web of Science ID 000394041900001
-
High quality factor manganese-doped aluminum lumped-element kinetic inductance detectors sensitive to frequencies below 100 GHz
APPLIED PHYSICS LETTERS
2017; 110 (22)
View details for DOI 10.1063/1.4984105
View details for Web of Science ID 000403341300035
-
Broadband parametric amplifiers based on nonlinear kinetic inductance artificial transmission lines
APPLIED PHYSICS LETTERS
2017; 110 (15)
View details for DOI 10.1063/1.4980102
View details for Web of Science ID 000399689400020
-
Ultra sensitive probing of the local electronic structure based on state-of-the-art Transition-Edge Sensor (TES) technology and soft x-ray spectroscopy
AMER CHEMICAL SOC. 2017
View details for Web of Science ID 000430568502277
-
Ultrasensitive probing of the local electronic structure of nitrogen doped carbon and its applications to 2D electronics, catalysis and bio-physics
AMER CHEMICAL SOC. 2017
View details for Web of Science ID 000430568506218
-
Probing the local electronic structure of dilute bioinorganic active sites using ultra-sensitive soft X-ray detectors
AMER CHEMICAL SOC. 2017
View details for Web of Science ID 000430568501597
-
Determination of differential orbital covalency of heme active sites by L-edge spectroscopy
AMER CHEMICAL SOC. 2017
View details for Web of Science ID 000430569103813
-
Cosmological parameters from pre-Planck CMB measurements: A 2017 update
PHYSICAL REVIEW D
2017; 95 (6)
View details for DOI 10.1103/PhysRevD.95.063525
View details for Web of Science ID 000399146300005
-
Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2017
View details for DOI 10.1088/1475-7516/2017/03/008
View details for Web of Science ID 000405653700008
-
BICEP2/KECK ARRAY VIII: MEASUREMENT OF GRAVITATIONAL LENSING FROM LARGE-SCALE B-MODE POLARIZATION
ASTROPHYSICAL JOURNAL
2016; 833 (2)
View details for DOI 10.3847/1538-4357/833/2/228
View details for Web of Science ID 000391169600103
-
THE ATACAMA COSMOLOGY TELESCOPE: THE POLARIZATION-SENSITIVE ACTPol INSTRUMENT
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2016; 227 (2)
View details for DOI 10.3847/1538-4365/227/2/21
View details for Web of Science ID 000390795900001
-
MILLIMETER TRANSIENT POINT SOURCES IN THE SPTpol 100 SQUARE DEGREE SURVEY
ASTROPHYSICAL JOURNAL
2016; 830 (2)
View details for DOI 10.3847/0004-637X/830/2/143
View details for Web of Science ID 000400471800010
-
REVIEW OF PARTICLE PHYSICS Particle Data Group
CHINESE PHYSICS C
2016; 40 (10)
View details for DOI 10.1088/1674-1137/40/10/100001
View details for Web of Science ID 000387226400001
-
Code-division-multiplexed readout of large arrays of TES microcalorimeters
APPLIED PHYSICS LETTERS
2016; 109 (11)
View details for DOI 10.1063/1.4962636
View details for Web of Science ID 000384400300031
-
Performance of Backshort-Under-Grid Kilopixel TES Arrays for HAWC
JOURNAL OF LOW TEMPERATURE PHYSICS
2016; 184 (3-4): 811-815
View details for DOI 10.1007/s10909-016-1509-9
View details for Web of Science ID 000379022700044
-
LiteBIRD: Mission Overview and Focal Plane Layout
JOURNAL OF LOW TEMPERATURE PHYSICS
2016; 184 (3-4): 824-831
View details for DOI 10.1007/s10909-016-1542-8
View details for Web of Science ID 000379022700046
-
Superconducting Pathways Through Kilopixel Backshort-Under-Grid Arrays
JOURNAL OF LOW TEMPERATURE PHYSICS
2016; 184 (3-4): 615-620
View details for DOI 10.1007/s10909-016-1487-y
View details for Web of Science ID 000379022700014
-
Advanced ACTPol Cryogenic Detector Arrays and Readout
JOURNAL OF LOW TEMPERATURE PHYSICS
2016; 184 (3-4): 772-779
View details for DOI 10.1007/s10909-016-1575-z
View details for Web of Science ID 000379022700038
-
Initial Performance of Bicep3: A Degree Angular Scale 95 GHz Band Polarimeter
JOURNAL OF LOW TEMPERATURE PHYSICS
2016; 184 (3-4): 765-771
View details for DOI 10.1007/s10909-015-1403-x
View details for Web of Science ID 000379022700037
-
Development of a Microwave SQUID-Multiplexed TES Array for MUSTANG-2
JOURNAL OF LOW TEMPERATURE PHYSICS
2016; 184 (1-2): 460-465
View details for DOI 10.1007/s10909-016-1570-4
View details for Web of Science ID 000378689800072
-
Developments in Time-Division Multiplexing of X-ray Transition-Edge Sensors.
Journal of low temperature physics
2016; 184 (1): 389-395
Abstract
Time-division multiplexing (TDM) is a mature scheme for the readout of arrays of transition-edge sensors (TESs). TDM is based on superconducting-quantum-interference-device (SQUID) current amplifiers. Multiple spectrometers based on gamma-ray and X-ray microcalorimeters have been operated with TDM readout, each at the scale of 200 sensors per spectrometer, as have several astronomical cameras with thousands of sub-mm or microwave bolometers. Here we present the details of two different versions of our TDM system designed to read out X-ray TESs. The first has been field-deployed in two 160-sensor (8 columns × 20 rows) spectrometers and four 240-sensor (8 columns × 30 rows) spectrometers. It has a three-SQUID-stage architecture, switches rows every 320 ns, and has total readout noise of 0.41 μΦ0/√Hz. The second, which is presently under development, has a two-SQUID-stage architecture, switches rows every 160 ns, and has total readout noise of 0.19 μΦ0/√Hz. Both quoted noise values are non-multiplexed and referred to the first-stage SQUID. In a demonstration of this new architecture, a multiplexed 1-column × 32-row array of NIST TESs achieved average energy resolution of 2.55±0.01 eV at 6 keV.
View details for DOI 10.1007/s10909-015-1373-z
View details for PubMedID 27325902
View details for PubMedCentralID PMC4912049
-
Developments in Time-Division Multiplexing of X-ray Transition-Edge Sensors (vol 184, pg 389, 2016)
JOURNAL OF LOW TEMPERATURE PHYSICS
2016; 184 (1-2): 396
View details for DOI 10.1007/s10909-016-1608-7
View details for Web of Science ID 000378689800061
-
BICEP2/KECK ARRAY. VII. MATRIX BASED E/B SEPARATION APPLIED TO BICEP2 AND THE KECK ARRAY
ASTROPHYSICAL JOURNAL
2016; 825 (1)
View details for DOI 10.3847/0004-637X/825/1/66
View details for Web of Science ID 000381930000066
-
Optical Demonstration of THz, Dual-Polarization Sensitive Microwave Kinetic Inductance Detectors
JOURNAL OF LOW TEMPERATURE PHYSICS
2016; 184 (1-2): 173-179
View details for DOI 10.1007/s10909-015-1434-3
View details for Web of Science ID 000378689800028
-
Developments in Time-Division Multiplexing of X-ray Transition-Edge Sensors
JOURNAL OF LOW TEMPERATURE PHYSICS
2016; 184 (1-2): 389-395
Abstract
Time-division multiplexing (TDM) is a mature scheme for the readout of arrays of transition-edge sensors (TESs). TDM is based on superconducting-quantum-interference-device (SQUID) current amplifiers. Multiple spectrometers based on gamma-ray and X-ray microcalorimeters have been operated with TDM readout, each at the scale of 200 sensors per spectrometer, as have several astronomical cameras with thousands of sub-mm or microwave bolometers. Here we present the details of two different versions of our TDM system designed to read out X-ray TESs. The first has been field-deployed in two 160-sensor (8 columns × 20 rows) spectrometers and four 240-sensor (8 columns × 30 rows) spectrometers. It has a three-SQUID-stage architecture, switches rows every 320 ns, and has total readout noise of 0.41 μΦ0/√Hz. The second, which is presently under development, has a two-SQUID-stage architecture, switches rows every 160 ns, and has total readout noise of 0.19 μΦ0/√Hz. Both quoted noise values are non-multiplexed and referred to the first-stage SQUID. In a demonstration of this new architecture, a multiplexed 1-column × 32-row array of NIST TESs achieved average energy resolution of 2.55±0.01 eV at 6 keV.
View details for DOI 10.1007/s10909-015-1373-z
View details for Web of Science ID 000378689800060
View details for PubMedCentralID PMC4912049
-
Evidence for the kinematic Sunyaev-Zel'dovich effect with the Atacama Cosmology Telescope and velocity reconstruction from the Baryon Oscillation Spectroscopic Survey
PHYSICAL REVIEW D
2016; 93 (8)
View details for DOI 10.1103/PhysRevD.93.082002
View details for Web of Science ID 000373770800001
-
In Situ Time Constant and Optical Efficiency Measurements of TRUCE Pixels in the Atacama B-Mode Search (vol 176, pg 712, 2014)
JOURNAL OF LOW TEMPERATURE PHYSICS
2016; 182 (3-4): 139
View details for DOI 10.1007/s10909-015-1354-2
View details for Web of Science ID 000373153600007
-
Improved Constraints on Cosmology and Foregrounds from BICEP2 and Keck Array Cosmic Microwave Background Data with Inclusion of 95 GHz Band.
Physical review letters
2016; 116 (3): 031302
Abstract
We present results from an analysis of all data taken by the BICEP2 and Keck Array cosmic microwave background (CMB) polarization experiments up to and including the 2014 observing season. This includes the first Keck Array observations at 95 GHz. The maps reach a depth of 50 nK deg in Stokes Q and U in the 150 GHz band and 127 nK deg in the 95 GHz band. We take auto- and cross-spectra between these maps and publicly available maps from WMAP and Planck at frequencies from 23 to 353 GHz. An excess over lensed ΛCDM is detected at modest significance in the 95×150 BB spectrum, and is consistent with the dust contribution expected from our previous work. No significant evidence for synchrotron emission is found in spectra such as 23×95, or for correlation between the dust and synchrotron sky patterns in spectra such as 23×353. We take the likelihood of all the spectra for a multicomponent model including lensed ΛCDM, dust, synchrotron, and a possible contribution from inflationary gravitational waves (as parametrized by the tensor-to-scalar ratio r) using priors on the frequency spectral behaviors of dust and synchrotron emission from previous analyses of WMAP and Planck data in other regions of the sky. This analysis yields an upper limit r_{0.05}<0.09 at 95% confidence, which is robust to variations explored in analysis and priors. Combining these B-mode results with the (more model-dependent) constraints from Planck analysis of CMB temperature plus baryon acoustic oscillations and other data yields a combined limit r_{0.05}<0.07 at 95% confidence. These are the strongest constraints to date on inflationary gravitational waves.
View details for DOI 10.1103/PhysRevLett.116.031302
View details for PubMedID 26849583
-
Improved Constraints on Cosmology and Foregrounds from BICEP2 and Keck Array Cosmic Microwave Background Data with Inclusion of 95 GHz Band
PHYSICAL REVIEW LETTERS
2016; 116 (3)
Abstract
We present results from an analysis of all data taken by the BICEP2 and Keck Array cosmic microwave background (CMB) polarization experiments up to and including the 2014 observing season. This includes the first Keck Array observations at 95 GHz. The maps reach a depth of 50 nK deg in Stokes Q and U in the 150 GHz band and 127 nK deg in the 95 GHz band. We take auto- and cross-spectra between these maps and publicly available maps from WMAP and Planck at frequencies from 23 to 353 GHz. An excess over lensed ΛCDM is detected at modest significance in the 95×150 BB spectrum, and is consistent with the dust contribution expected from our previous work. No significant evidence for synchrotron emission is found in spectra such as 23×95, or for correlation between the dust and synchrotron sky patterns in spectra such as 23×353. We take the likelihood of all the spectra for a multicomponent model including lensed ΛCDM, dust, synchrotron, and a possible contribution from inflationary gravitational waves (as parametrized by the tensor-to-scalar ratio r) using priors on the frequency spectral behaviors of dust and synchrotron emission from previous analyses of WMAP and Planck data in other regions of the sky. This analysis yields an upper limit r_{0.05}<0.09 at 95% confidence, which is robust to variations explored in analysis and priors. Combining these B-mode results with the (more model-dependent) constraints from Planck analysis of CMB temperature plus baryon acoustic oscillations and other data yields a combined limit r_{0.05}<0.07 at 95% confidence. These are the strongest constraints to date on inflationary gravitational waves.
View details for DOI 10.1103/PhysRevLett.116.031302
View details for Web of Science ID 000368523400001
-
A cryogenic rotation stage with a large clear aperture for the half-wave plates in the Spider instrument.
Review of scientific instruments
2016; 87 (1): 014501-?
Abstract
We describe the cryogenic half-wave plate rotation mechanisms built for and used in Spider, a polarization-sensitive balloon-borne telescope array that observed the cosmic microwave background at 95 GHz and 150 GHz during a stratospheric balloon flight from Antarctica in January 2015. The mechanisms operate at liquid helium temperature in flight. A three-point contact design keeps the mechanical bearings relatively small but allows for a large (305 mm) diameter clear aperture. A worm gear driven by a cryogenic stepper motor allows for precise positioning and prevents undesired rotation when the motors are depowered. A custom-built optical encoder system monitors the bearing angle to an absolute accuracy of ±0.1(∘). The system performed well in Spider during its successful 16 day flight.
View details for DOI 10.1063/1.4939435
View details for PubMedID 26827333
-
Integrated Performance of a Frequency Domain Multiplexing Readout in the SPT-3G Receiver
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2232146
View details for Web of Science ID 000385793800032
-
LiteBIRD, Lite satellite for the study of B-mode polarization and Inflation from cosmic microwave background Radiation Detection
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2231995
View details for Web of Science ID 000385794100029
-
BICEP3 performance overview and planned Keck Array upgrade
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2233894
View details for Web of Science ID 000385793800017
-
Optical characterization of the BICEP3 CMB polarimeter at the South Pole
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2231747
View details for Web of Science ID 000385793800075
-
Systematics of an ambient-temperature, rapidly-rotating half-wave plate
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2232711
View details for Web of Science ID 000385793800026
-
Transition-edge sensor pixel parameter design of the microcalorimeter array for the X-ray Integral Field Unit on Athena
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2231749
View details for Web of Science ID 000387731500070
-
Instrumental performance and results from testing of the BLAST-TNG receiver, submillimeter optics, and MKID detector arrays
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2231167
View details for Web of Science ID 000385793800012
-
Development of x-ray microcalorimeter imaging spectrometers for the X-ray Surveyor mission concept
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2232156
View details for Web of Science ID 000387731500017
-
Readout of two-kilopixel transition-edge sensor arrays for Advanced ACTPol
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2233895
View details for Web of Science ID 000385793800034
-
The Primordial Inflation Polarization Explorer (PIPER)
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2231109
View details for Web of Science ID 000385793800037
-
Optical modeling and polarization calibration for CMB measurements with ACTPol and Advanced ACTPol
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2231912
View details for Web of Science ID 000385793800069
-
Polarization Sensitive Multi-Chroic MKIDs
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2233243
View details for Web of Science ID 000385793800021
-
Large arrays of dual-polarized multichroic TES detectors for CMB measurements with the SPT-3G receiver
SPIE-INT SOC OPTICAL ENGINEERING. 2016
View details for DOI 10.1117/12.2232912
View details for Web of Science ID 000385793800028
-
BICEP2. III. INSTRUMENTAL SYSTEMATICS
ASTROPHYSICAL JOURNAL
2015; 814 (2)
View details for DOI 10.1088/0004-637X/814/2/110
View details for Web of Science ID 000365317300028
-
The thermal design, characterization, and performance of the SPIDER long-duration balloon cryostat
CRYOGENICS
2015; 72: 65-76
View details for DOI 10.1016/j.cryogenics.2015.09.002
View details for Web of Science ID 000367482800009
-
ANTENNA-COUPLED TES BOLOMETERS USED IN BICEP2, Keck Array, AND SPIDER
ASTROPHYSICAL JOURNAL
2015; 812 (2)
View details for DOI 10.1088/0004-637X/812/2/176
View details for Web of Science ID 000365206600088
-
Radio for hidden-photon dark matter detection
PHYSICAL REVIEW D
2015; 92 (7)
View details for DOI 10.1103/PhysRevD.92.075012
View details for Web of Science ID 000362443600004
-
BICEP2/KECK ARRAY V: MEASUREMENTS OF B-MODE POLARIZATION AT DEGREE ANGULAR SCALES AND 150 GHz BY THE KECK ARRAY
ASTROPHYSICAL JOURNAL
2015; 811 (2)
View details for DOI 10.1088/0004-637X/811/2/126
View details for Web of Science ID 000363513800054
-
Fabrication of large dual-polarized multichroic TES bolometer arrays for CMB measurements with the SPT-3G camera
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
2015; 28 (9)
View details for DOI 10.1088/0953-2048/28/9/094002
View details for Web of Science ID 000360942700007
-
A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND GRAVITATIONAL LENSING POTENTIAL FROM 100 SQUARE DEGREES OF SPTPOL DATA
ASTROPHYSICAL JOURNAL
2015; 810 (1)
View details for DOI 10.1088/0004-637X/810/1/50
View details for Web of Science ID 000361800900050
-
MEASUREMENTS OF SUB-DEGREE B-MODE POLARIZATION IN THE COSMIC MICROWAVE BACKGROUND FROM 100 SQUARE DEGREES OF SPTPOL DATA
ASTROPHYSICAL JOURNAL
2015; 807 (2)
View details for DOI 10.1088/0004-637X/807/2/151
View details for Web of Science ID 000358967000037
-
BICEP2/KECK ARRAY. IV. OPTICAL CHARACTERIZATION AND PERFORMANCE OF THE BICEP2 AND KECK ARRAY EXPERIMENTS
ASTROPHYSICAL JOURNAL
2015; 806 (2)
View details for DOI 10.1088/0004-637X/806/2/206
View details for Web of Science ID 000357129500061
-
Simulation and Analysis of Superconducting Traveling-Wave Parametric Amplifiers
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2015; 25 (3)
View details for DOI 10.1109/TASC.2014.2378059
View details for Web of Science ID 000216434800001
-
Low Loss Superconducting Microstrip Development at Argonne National Lab
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2015; 25 (3)
View details for DOI 10.1109/TASC.2014.2369231
View details for Web of Science ID 000351362200028
-
MEASUREMENTS OF E-MODE POLARIZATION AND TEMPERATURE-E-MODE CORRELATION IN THE COSMIC MICROWAVE BACKGROUND FROM 100 SQUARE DEGREES OF SPTPOL DATA
ASTROPHYSICAL JOURNAL
2015; 805 (1)
View details for DOI 10.1088/0004-637X/805/1/36
View details for Web of Science ID 000354991300036
-
Generating and verifying entangled itinerant microwave fields with efficient and independent measurements
PHYSICAL REVIEW A
2015; 91 (4)
View details for DOI 10.1103/PhysRevA.91.042305
View details for Web of Science ID 000352343100003
-
Neutrino physics from the cosmic microwave background and large scale structure
ASTROPARTICLE PHYSICS
2015; 63: 66-80
View details for DOI 10.1016/j.astropartphys.2014.05.014
View details for Web of Science ID 000344824400006
-
Joint analysis of BICEP2/keck array and Planck Data.
Physical review letters
2015; 114 (10): 101301-?
Abstract
We report the results of a joint analysis of data from BICEP2/Keck Array and Planck. BICEP2 and Keck Array have observed the same approximately 400 deg^{2} patch of sky centered on RA 0 h, Dec. -57.5°. The combined maps reach a depth of 57 nK deg in Stokes Q and U in a band centered at 150 GHz. Planck has observed the full sky in polarization at seven frequencies from 30 to 353 GHz, but much less deeply in any given region (1.2 μK deg in Q and U at 143 GHz). We detect 150×353 cross-correlation in B modes at high significance. We fit the single- and cross-frequency power spectra at frequencies ≥150 GHz to a lensed-ΛCDM model that includes dust and a possible contribution from inflationary gravitational waves (as parametrized by the tensor-to-scalar ratio r), using a prior on the frequency spectral behavior of polarized dust emission from previous Planck analysis of other regions of the sky. We find strong evidence for dust and no statistically significant evidence for tensor modes. We probe various model variations and extensions, including adding a synchrotron component in combination with lower frequency data, and find that these make little difference to the r constraint. Finally, we present an alternative analysis which is similar to a map-based cleaning of the dust contribution, and show that this gives similar constraints. The final result is expressed as a likelihood curve for r, and yields an upper limit r_{0.05}<0.12 at 95% confidence. Marginalizing over dust and r, lensing B modes are detected at 7.0σ significance.
View details for PubMedID 25815919
-
Joint Analysis of BICEP2/Keck Array and Planck Data
PHYSICAL REVIEW LETTERS
2015; 114 (10)
Abstract
We report the results of a joint analysis of data from BICEP2/Keck Array and Planck. BICEP2 and Keck Array have observed the same approximately 400 deg^{2} patch of sky centered on RA 0 h, Dec. -57.5°. The combined maps reach a depth of 57 nK deg in Stokes Q and U in a band centered at 150 GHz. Planck has observed the full sky in polarization at seven frequencies from 30 to 353 GHz, but much less deeply in any given region (1.2 μK deg in Q and U at 143 GHz). We detect 150×353 cross-correlation in B modes at high significance. We fit the single- and cross-frequency power spectra at frequencies ≥150 GHz to a lensed-ΛCDM model that includes dust and a possible contribution from inflationary gravitational waves (as parametrized by the tensor-to-scalar ratio r), using a prior on the frequency spectral behavior of polarized dust emission from previous Planck analysis of other regions of the sky. We find strong evidence for dust and no statistically significant evidence for tensor modes. We probe various model variations and extensions, including adding a synchrotron component in combination with lower frequency data, and find that these make little difference to the r constraint. Finally, we present an alternative analysis which is similar to a map-based cleaning of the dust contribution, and show that this gives similar constraints. The final result is expressed as a likelihood curve for r, and yields an upper limit r_{0.05}<0.12 at 95% confidence. Marginalizing over dust and r, lensing B modes are detected at 7.0σ significance.
View details for DOI 10.1103/PhysRevLett.114.101301
View details for Web of Science ID 000350624500002
View details for PubMedID 25815919
-
Photon-noise limited sensitivity in titanium nitride kinetic inductance detectors
APPLIED PHYSICS LETTERS
2015; 106 (7)
View details for DOI 10.1063/1.4913418
View details for Web of Science ID 000350227300048
-
Prototype Phantoms for Characterization of Ultralow Field Magnetic Resonance Imaging
MAGNETIC RESONANCE IN MEDICINE
2014; 72 (6): 1793–1800
Abstract
Prototype phantoms were designed, constructed, and characterized for the purpose of calibrating ultralow field magnetic resonance imaging (ULF MRI) systems. The phantoms were designed to measure spatial resolution and to quantify sensitivity to systematic variation of proton density and relaxation time, T1 .The phantoms were characterized first with conventional magnetic resonance scanners at 1.5 and 3 T, and subsequently with a prototype ULF MRI scanner between 107 and 128 μT .The ULF system demonstrated a 2-mm spatial resolution and, using T1 measurements, distinguished aqueous solutions of MnCl2 differing by 20 μM [Mn(2+) ].The prototype phantoms proved well-matched to ULF MRI applications, and allowed direct comparison of the performance of ULF and clinical systems.
View details for DOI 10.1002/mrm.25060
View details for Web of Science ID 000344798300031
View details for PubMedID 24281979
-
The Next Generation BLAST Experiment
JOURNAL OF ASTRONOMICAL INSTRUMENTATION
2014; 3 (2)
View details for DOI 10.1142/S2251171714400017
View details for Web of Science ID 000216740800002
-
The Atacama Cosmology Telescope: CMB polarization at 200 < l < 9000
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2014
View details for DOI 10.1088/1475-7516/2014/10/007
View details for Web of Science ID 000345990800008
-
Design and Expected Performance of GISMO-2, a Two Color Millimeter Camera for the IRAM 30 m Telescope
JOURNAL OF LOW TEMPERATURE PHYSICS
2014; 176 (5-6): 829–34
View details for DOI 10.1007/s10909-014-1086-8
View details for Web of Science ID 000339875400031
-
Characterization and Performance of a Kilo-TES Sub-Array for ACTPol
JOURNAL OF LOW TEMPERATURE PHYSICS
2014; 176 (5-6): 705–11
View details for DOI 10.1007/s10909-014-1125-5
View details for Web of Science ID 000339875400014
-
Horn Coupled Multichroic Polarimeters for the Atacama Cosmology Telescope Polarization Experiment
JOURNAL OF LOW TEMPERATURE PHYSICS
2014; 176 (5-6): 670–76
View details for DOI 10.1007/s10909-014-1134-4
View details for Web of Science ID 000339875400009
-
Optical Efficiency and R(T,I) Measurements of ACTPol TESes Using Time Domain Multiplexing Electronics
JOURNAL OF LOW TEMPERATURE PHYSICS
2014; 176 (5-6): 749–54
View details for DOI 10.1007/s10909-013-1066-4
View details for Web of Science ID 000339875400020
-
MUSTANG 2: A Large Focal Plane Array for the 100 m Green Bank Telescope
JOURNAL OF LOW TEMPERATURE PHYSICS
2014; 176 (5-6): 808–14
View details for DOI 10.1007/s10909-013-1070-8
View details for Web of Science ID 000339875400028
-
High-Resolution Kaonic-Atom X-ray Spectroscopy with Transition-Edge-Sensor Microcalorimeters
JOURNAL OF LOW TEMPERATURE PHYSICS
2014; 176 (5-6): 1015–21
View details for DOI 10.1007/s10909-014-1137-1
View details for Web of Science ID 000339875400057
-
BICEP2. II. EXPERIMENT AND THREE-YEAR DATA SET
ASTROPHYSICAL JOURNAL
2014; 792 (1)
View details for DOI 10.1088/0004-637X/792/1/62
View details for Web of Science ID 000341172100062
-
In Situ Time Constant and Optical Efficiency Measurements of TRUCE Pixels in the Atacama B-Mode Search
JOURNAL OF LOW TEMPERATURE PHYSICS
2014; 176 (5-6): 712-718
View details for DOI 10.1007/s10909-013-0999-y
View details for Web of Science ID 000339875400015
-
Properties of TiN for Detector and Amplifier Applications
JOURNAL OF LOW TEMPERATURE PHYSICS
2014; 176 (3-4): 136–41
View details for DOI 10.1007/s10909-014-1089-5
View details for Web of Science ID 000338210800002
-
A Study of Al-Mn Transition Edge Sensor Engineering for Stability
JOURNAL OF LOW TEMPERATURE PHYSICS
2014; 176 (3-4): 383–91
View details for DOI 10.1007/s10909-013-0994-3
View details for Web of Science ID 000338210800040
-
Dual-Polarization-Sensitive Kinetic Inductance Detectors for Balloon-borne Sub-millimeter Polarimetry
JOURNAL OF LOW TEMPERATURE PHYSICS
2014; 176 (3-4): 490–96
View details for DOI 10.1007/s10909-014-1160-2
View details for Web of Science ID 000338210800056
-
An Efficient Superconducting Transformer Design for SQUID Magnetometry
JOURNAL OF LOW TEMPERATURE PHYSICS
2014; 176 (3-4): 483–89
View details for DOI 10.1007/s10909-014-1092-x
View details for Web of Science ID 000338210800055
-
Development of a Broadband NbTiN Traveling Wave Parametric Amplifier for MKID Readout
JOURNAL OF LOW TEMPERATURE PHYSICS
2014; 176 (3-4): 476–82
View details for DOI 10.1007/s10909-013-1042-z
View details for Web of Science ID 000338210800054
-
THE GISMO TWO-MILLIMETER DEEP FIELD IN GOODS-N
ASTROPHYSICAL JOURNAL
2014; 790 (1)
View details for DOI 10.1088/0004-637X/790/1/77
View details for Web of Science ID 000338836800077
-
Detection of B-Mode Polarization at Degree Angular Scales by BICEP2.
Physical review letters
2014; 112 (24): 241101-?
Abstract
We report results from the BICEP2 experiment, a cosmic microwave background (CMB) polarimeter specifically designed to search for the signal of inflationary gravitational waves in the B-mode power spectrum around ℓ∼80. The telescope comprised a 26 cm aperture all-cold refracting optical system equipped with a focal plane of 512 antenna coupled transition edge sensor 150 GHz bolometers each with temperature sensitivity of ≈300 μK(CMB)√s. BICEP2 observed from the South Pole for three seasons from 2010 to 2012. A low-foreground region of sky with an effective area of 380 square deg was observed to a depth of 87 nK deg in Stokes Q and U. In this paper we describe the observations, data reduction, maps, simulations, and results. We find an excess of B-mode power over the base lensed-ΛCDM expectation in the range 30 < ℓ < 150, inconsistent with the null hypothesis at a significance of >5σ. Through jackknife tests and simulations based on detailed calibration measurements we show that systematic contamination is much smaller than the observed excess. Cross correlating against WMAP 23 GHz maps we find that Galactic synchrotron makes a negligible contribution to the observed signal. We also examine a number of available models of polarized dust emission and find that at their default parameter values they predict power ∼(5-10)× smaller than the observed excess signal (with no significant cross-correlation with our maps). However, these models are not sufficiently constrained by external public data to exclude the possibility of dust emission bright enough to explain the entire excess signal. Cross correlating BICEP2 against 100 GHz maps from the BICEP1 experiment, the excess signal is confirmed with 3σ significance and its spectral index is found to be consistent with that of the CMB, disfavoring dust at 1.7σ. The observed B-mode power spectrum is well fit by a lensed-ΛCDM+tensor theoretical model with tensor-to-scalar ratio r = 0.20_(-0.05)(+0.07), with r = 0 disfavored at 7.0σ. Accounting for the contribution of foreground, dust will shift this value downward by an amount which will be better constrained with upcoming data sets.
View details for PubMedID 24996078
-
The Atacama Cosmology Telescope: temperature and gravitational lensing power spectrum measurements from three seasons of data
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2014
View details for DOI 10.1088/1475-7516/2014/04/014
View details for Web of Science ID 000334496500014
-
The Atacama Cosmology Telescope: dusty star-forming galaxies and active galactic nuclei in the Southern survey
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2014; 439 (2): 1556–74
View details for DOI 10.1093/mnras/stu001
View details for Web of Science ID 000334114000021
-
Modulation of cosmic microwave background polarization with a warm rapidly rotating half-wave plate on the Atacama B-Mode Search instrument (vol 85, 024501, 2014)
REVIEW OF SCIENTIFIC INSTRUMENTS
2014; 85 (3)
View details for DOI 10.1063/1.4867655
View details for Web of Science ID 000335920400086
-
Modulation of cosmic microwave background polarization with a warm rapidly rotating half-wave plate on the Atacama B-Mode Search instrument
REVIEW OF SCIENTIFIC INSTRUMENTS
2014; 85 (2)
Abstract
We evaluate the modulation of cosmic microwave background polarization using a rapidly rotating, half-wave plate (HWP) on the Atacama B-Mode Search. After demodulating the time-ordered-data (TOD), we find a significant reduction of atmospheric fluctuations. The demodulated TOD is stable on time scales of 500-1000 s, corresponding to frequencies of 1-2 mHz. This facilitates recovery of cosmological information at large angular scales, which are typically available only from balloon-borne or satellite experiments. This technique also achieves a sensitive measurement of celestial polarization without differencing the TOD of paired detectors sensitive to two orthogonal linear polarizations. This is the first demonstration of the ability to remove atmospheric contamination at these levels from a ground-based platform using a rapidly rotating HWP.
View details for DOI 10.1063/1.4862058
View details for Web of Science ID 000335919900273
View details for PubMedID 24593374
-
THE SECOND-GENERATION z (REDSHIFT) AND EARLY UNIVERSE SPECTROMETER. I. FIRST-LIGHT OBSERVATION OF A HIGHLY LENSED LOCAL-ULIRG ANALOG AT HIGH-z
ASTROPHYSICAL JOURNAL
2014; 780 (2)
View details for DOI 10.1088/0004-637X/780/2/142
View details for Web of Science ID 000329097100029
-
The performance of the bolometer array and readout system during the 2012/2013 flight of the E and B experiment (EBEX)
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2056267
View details for Web of Science ID 000354387400026
-
SPT-3G: A Next-Generation Cosmic Microwave Background Polarization Experiment on the South Pole Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2057305
View details for Web of Science ID 000354387400043
-
ACTPol: on-sky performance and characterization
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2057243
View details for Web of Science ID 000354387400025
-
OLIMPO: A 4-bands imaging spectro-photometer for balloon-borne observations of the Sunyaev-Zel'dovich effect
IOS PRESS. 2014: 257–64
View details for DOI 10.3254/978-1-61499-476-3-257
View details for Web of Science ID 000454539400009
-
Pre-flight integration and characterization of the SPIDER balloon-borne telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2055683
View details for Web of Science ID 000354387400028
-
BICEP3: a 95 GHz refracting telescope for degree-scale CMB polarization
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2057224
View details for Web of Science ID 000354387400042
-
MUSTANG 2-a large focal plane array for the 100 meter Green Bank Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2056455
View details for Web of Science ID 000354387400012
-
Characterization of the Atacama B-Mode Search
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2055576
View details for Web of Science ID 000354387400024
-
Attitude determination for balloon-borne experiments
Conference on Ground-Based and Airborne Telescopes V
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2055156
View details for Web of Science ID 000354375800094
-
BLASTbus electronics: general-purpose readout and control for balloon-borne experiments
Conference on Ground-Based and Airborne Telescopes V
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2056693
View details for Web of Science ID 000354375800029
-
BICEP2 and Keck Array: upgrades and improved beam characterization
Conference on Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2055713
View details for Web of Science ID 000354387400027
-
Keck Array and BICEP3: Spectral Characterization of 5000+Detectors
Conference on Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2056779
View details for Web of Science ID 000354387400091
-
The Primordial Inflation Polarization Explorer (PIPER)
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2056806
View details for Web of Science ID 000354387400041
-
CLASS: The cosmology Large Angular Scale Surveyor
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2056701
View details for Web of Science ID 000354387400039
-
The Cosmology Large Angular Scale Surveyor (CLASS): 38-GHz detector array of bolometric polarimeters
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2056530
View details for Web of Science ID 000354387400040
-
Kilopixel Backshort-Under-Grid arrays for the Primordial Inflation Polarization Explorer
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2056995
View details for Web of Science ID 000354387400092
-
The transition-edge EBIT microcalorimeter spectrometer
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2055568
View details for Web of Science ID 000354529100115
-
The Cosmology Large Angular Scale Surveyor (CLASS) Telescope Architecture
IEEE. 2014: 2583–87
View details for Web of Science ID 000361548802182
-
Pointing control for the SPIDER balloon-borne telescope
Conference on Ground-Based and Airborne Telescopes V
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2055166
View details for Web of Science ID 000354375800028
-
Design and construction of a carbon fiber gondola for the SPIDER balloon-borne telescope
Conference on Ground-Based and Airborne Telescopes V
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2055413
View details for Web of Science ID 000354375800027
-
Standoff passive video imaging at 350 GHz with 251 superconducting detectors
SPIE-INT SOC OPTICAL ENGINEERING. 2014
View details for DOI 10.1117/12.2050712
View details for Web of Science ID 000342290900003
-
Large-aperture wide-bandwidth antireflection-coated silicon lenses for millimeter wavelengths
APPLIED OPTICS
2013; 52 (36): 8747–58
Abstract
The increasing scale of cryogenic detector arrays for submillimeter and millimeter wavelength astrophysics has led to the need for large aperture, high index of refraction, low loss, cryogenic refracting optics. Silicon with n=3.4, low loss, and high thermal conductivity is a nearly optimal material for these purposes but requires an antireflection (AR) coating with broad bandwidth, low loss, low reflectance, and a matched coefficient of thermal expansion. We present an AR coating for curved silicon optics comprised of subwavelength features cut into the lens surface with a custom three-axis silicon dicing saw. These features constitute a metamaterial that behaves as a simple dielectric coating. We have fabricated silicon lenses as large as 33.4 cm in diameter with micromachined layers optimized for use between 125 and 165 GHz. Our design reduces average reflections to a few tenths of a percent for angles of incidence up to 30° with low cross polarization. We describe the design, tolerance, manufacture, and measurements of these coatings and present measurements of the optical properties of silicon at millimeter wavelengths at cryogenic and room temperatures. This coating and lens fabrication approach is applicable from centimeter to submillimeter wavelengths and can be used to fabricate coatings with greater than octave bandwidth.
View details for DOI 10.1364/AO.52.008747
View details for Web of Science ID 000328948300013
View details for PubMedID 24513939
-
High-resolution gamma-ray spectroscopy with a microwave-multiplexed transition-edge sensor array
APPLIED PHYSICS LETTERS
2013; 103 (20)
View details for DOI 10.1063/1.4829156
View details for Web of Science ID 000327818700069
-
The Atacama Cosmology Telescope: the stellar content of galaxy clusters selected using the Sunyaev-Zel'dovich effect
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2013; 435 (4): 3469–80
View details for DOI 10.1093/mnras/stt1535
View details for Web of Science ID 000325774700056
-
The Atacama Cosmology Telescope: cosmological parameters from three seasons of data
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2013
View details for DOI 10.1088/1475-7516/2013/10/060
View details for Web of Science ID 000326979500060
-
Detection of B-Mode Polarization in the Cosmic Microwave Background with Data from the South Pole Telescope
PHYSICAL REVIEW LETTERS
2013; 111 (14)
Abstract
Gravitational lensing of the cosmic microwave background generates a curl pattern in the observed polarization. This "B-mode" signal provides a measure of the projected mass distribution over the entire observable Universe and also acts as a contaminant for the measurement of primordial gravity-wave signals. In this Letter we present the first detection of gravitational lensing B modes, using first-season data from the polarization-sensitive receiver on the South Pole Telescope (SPTpol). We construct a template for the lensing B-mode signal by combining E-mode polarization measured by SPTpol with estimates of the lensing potential from a Herschel-SPIRE map of the cosmic infrared background. We compare this template to the B modes measured directly by SPTpol, finding a nonzero correlation at 7.7σ significance. The correlation has an amplitude and scale dependence consistent with theoretical expectations, is robust with respect to analysis choices, and constitutes the first measurement of a powerful cosmological observable.
View details for DOI 10.1103/PhysRevLett.111.141301
View details for Web of Science ID 000325366100001
View details for PubMedID 24138230
-
The Atacama Cosmology Telescope: Sunyaev-Zel'dovich selected galaxy clusters at 148 GHz from three seasons of data
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2013
View details for DOI 10.1088/1475-7516/2013/07/008
View details for Web of Science ID 000322582000009
-
The Atacama Cosmology Telescope: likelihood for small-scale CMB data
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2013
View details for DOI 10.1088/1475-7516/2013/07/025
View details for Web of Science ID 000322582000026
-
Proximity-coupled Ti/TiN multilayers for use in kinetic inductance detectors
APPLIED PHYSICS LETTERS
2013; 102 (23)
View details for DOI 10.1063/1.4804286
View details for Web of Science ID 000320622600060
-
Dual-Polarization Sensitive MKIDs for Far Infrared Astrophysics
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2013; 23 (3)
View details for DOI 10.1109/TASC.2012.2233857
View details for Web of Science ID 000318867100068
-
Design and Fabrication of 90 GHz TES Polarimeter Detectors for the South Pole Telescope
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2013; 23 (3)
View details for DOI 10.1109/TASC.2012.2235892
View details for Web of Science ID 000318867100044
-
Improvements in Silicon Oxide Dielectric Loss for Superconducting Microwave Detector Circuits
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2013; 23 (3)
View details for DOI 10.1109/TASC.2013.2242951
View details for Web of Science ID 000318867100017
-
Design and Performance of Kilo-Pixel TES Arrays for ACTPol
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2013; 23 (3)
View details for DOI 10.1109/TASC.2013.2242191
View details for Web of Science ID 000318867100074
-
Cosmological parameters from pre-planck cosmic microwave background measurements
PHYSICAL REVIEW D
2013; 87 (10)
View details for DOI 10.1103/PhysRevD.87.103012
View details for Web of Science ID 000319254500001
-
Magnetic Flux Noise in dc SQUIDs: Temperature and Geometry Dependence
PHYSICAL REVIEW LETTERS
2013; 110 (14): 147002
Abstract
The spectral density S(Φ)(f) = A(2)/(f/1 Hz)(α) of magnetic flux noise in ten dc superconducting quantum interference devices (SQUIDs) with systematically varied geometries shows that α increases as the temperature is lowered; in so doing, each spectrum pivots about a nearly constant frequency. The mean-square flux noise, inferred by integrating the power spectra, grows rapidly with temperature and at a given temperature is approximately independent of the outer dimension of a given SQUID. These results are incompatible with a model based on the random reversal of independent, surface spins.
View details for DOI 10.1103/PhysRevLett.110.147002
View details for Web of Science ID 000317190800014
View details for PubMedID 25167026
-
SCUBA-2: the 10 000 pixel bolometer camera on the James Clerk Maxwell Telescope
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2013; 430 (4): 2513–33
View details for DOI 10.1093/mnras/sts612
View details for Web of Science ID 000318339700001
-
SPIDER: probing the early Universe with a suborbital polarimeter
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2013
View details for DOI 10.1088/1475-7516/2013/04/047
View details for Web of Science ID 000318556200047
-
Table-Top Ultrafast X-Ray Microcalorimeter Spectrometry for Molecular Structure
PHYSICAL REVIEW LETTERS
2013; 110 (13): 138302
Abstract
This work presents an x-ray absorption measurement by use of ionizing radiation generated by a femtosecond pulsed laser source. The spectrometer was a microcalorimetric array whose pixels are capable of accurately measuring energies of individual radiation quanta. An isotropic continuum x-ray spectrum in the few-keV range was generated from a laser plasma source with a water-jet target. X rays were transmitted through a ferrocene powder sample to the detector, whose pixels have average photon energy resolution ΔE=3.14 eV full-width-at-half-maximum at 5.9 keV. The bond distance of ferrocene was retrieved from this first hard-x-ray absorption fine-structure spectrum collected with an energy-dispersive detector. This technique will be broadly enabling for time-resolved observations of structural dynamics in photoactive systems.
View details for DOI 10.1103/PhysRevLett.110.138302
View details for Web of Science ID 000316685100034
View details for PubMedID 23581383
-
THE ATACAMA COSMOLOGY TELESCOPE: DATA CHARACTERIZATION AND MAPMAKING
ASTROPHYSICAL JOURNAL
2013; 762 (1)
View details for DOI 10.1088/0004-637X/762/1/10
View details for Web of Science ID 000313007900010
-
Current distribution and transition width in superconducting transition-edge sensors
APPLIED PHYSICS LETTERS
2012; 101 (24)
View details for DOI 10.1063/1.4771984
View details for Web of Science ID 000312490000061
-
The MARE project: a new Re-187 neutrino mass experiment with sub eV sensitivity
ELSEVIER SCIENCE BV. 2012: 394
View details for DOI 10.1016/j.nuclphysbps.2011.10.042
View details for Web of Science ID 000307604300115
-
A titanium-nitride near-infrared kinetic inductance photon-counting detector and its anomalous electrodynamics
APPLIED PHYSICS LETTERS
2012; 101 (14)
View details for DOI 10.1063/1.4756916
View details for Web of Science ID 000309603300069
-
ORIGIN: metal creation and evolution from the cosmic dawn
EXPERIMENTAL ASTRONOMY
2012; 34 (2): 519-549
View details for DOI 10.1007/s10686-011-9224-7
View details for Web of Science ID 000309230600014
-
A high resolution gamma-ray spectrometer based on superconducting microcalorimeters
REVIEW OF SCIENTIFIC INSTRUMENTS
2012; 83 (9): 093113
Abstract
Improvements in superconductor device fabrication, detector hybridization techniques, and superconducting quantum interference device readout have made square-centimeter-sized arrays of gamma-ray microcalorimeters, based on transition-edge sensors (TESs), possible. At these collecting areas, gamma microcalorimeters can utilize their unprecedented energy resolution to perform spectroscopy in a number of applications that are limited by closely-spaced spectral peaks, for example, the nondestructive analysis of nuclear materials. We have built a 256 pixel spectrometer with an average full-width-at-half-maximum energy resolution of 53 eV at 97 keV, a useable dynamic range above 400 keV, and a collecting area of 5 cm(2). We have demonstrated multiplexed readout of the full 256 pixel array with 236 of the pixels (91%) giving spectroscopic data. This is the largest multiplexed array of TES microcalorimeters to date. This paper will review the spectrometer, highlighting the instrument design, detector fabrication, readout, operation of the instrument, and data processing. Further, we describe the characterization and performance of the newest 256 pixel array.
View details for DOI 10.1063/1.4754630
View details for Web of Science ID 000309426700014
View details for PubMedID 23020368
-
Evidence of Galaxy Cluster Motions with the Kinematic Sunyaev-Zel'dovich Effect
PHYSICAL REVIEW LETTERS
2012; 109 (4)
Abstract
Using high-resolution microwave sky maps made by the Atacama Cosmology Telescope, we for the first time present strong evidence for motions of galaxy clusters and groups via microwave background temperature distortions due to the kinematic Sunyaev-Zel'dovich effect. Galaxy clusters are identified by their constituent luminous galaxies observed by the Baryon Oscillation Spectroscopic Survey, part of the Sloan Digital Sky Survey III. We measure the mean pairwise momentum of clusters, with a probability of the signal being due to random errors of 0.002, and the signal is consistent with the growth of cosmic structure in the standard model of cosmology.
View details for DOI 10.1103/PhysRevLett.109.041101
View details for Web of Science ID 000306651900001
View details for PubMedID 23006072
-
Pure dephasing in flux qubits due to flux noise with spectral density scaling as 1/f(alpha)
PHYSICAL REVIEW B
2012; 85 (22)
View details for DOI 10.1103/PhysRevB.85.224505
View details for Web of Science ID 000304806900002
-
An All Silicon Feedhorn-Coupled Focal Plane for Cosmic Microwave Background Polarimetry
JOURNAL OF LOW TEMPERATURE PHYSICS
2012; 167 (5-6): 904-910
View details for DOI 10.1007/s10909-011-0420-7
View details for Web of Science ID 000303461600053
-
Multi-chroic Feed-Horn Coupled TES Polarimeters
JOURNAL OF LOW TEMPERATURE PHYSICS
2012; 167 (5-6): 879–84
View details for DOI 10.1007/s10909-012-0612-9
View details for Web of Science ID 000303461600049
-
Optimizing Feedhorn-Coupled TES Polarimeters for Balloon and Space-Based CMB Observations
JOURNAL OF LOW TEMPERATURE PHYSICS
2012; 167 (5-6): 917–22
View details for DOI 10.1007/s10909-012-0554-2
View details for Web of Science ID 000303461600055
-
An Overview of the SPTpol Experiment
JOURNAL OF LOW TEMPERATURE PHYSICS
2012; 167 (5-6): 859-864
View details for DOI 10.1007/s10909-012-0505-y
View details for Web of Science ID 000303461600046
-
Optical and Thermal Properties of ANL/KICP Polarization Sensitive Bolometers for SPTpol
JOURNAL OF LOW TEMPERATURE PHYSICS
2012; 167 (5-6): 865-871
View details for DOI 10.1007/s10909-012-0491-0
View details for Web of Science ID 000303461600047
-
Optimization and Analysis of Code-Division Multiplexed TES Microcalorimeters
JOURNAL OF LOW TEMPERATURE PHYSICS
2012; 167 (5-6): 713–20
View details for DOI 10.1007/s10909-012-0463-4
View details for Web of Science ID 000303461600024
-
The Keck Array: A Multi Camera CMB Polarimeter at the South Pole
JOURNAL OF LOW TEMPERATURE PHYSICS
2012; 167 (5-6): 827-833
View details for DOI 10.1007/s10909-012-0510-1
View details for Web of Science ID 000303461600041
-
Advanced Code-Division Multiplexers for Superconducting Detector Arrays
JOURNAL OF LOW TEMPERATURE PHYSICS
2012; 167 (5-6): 588–94
View details for DOI 10.1007/s10909-012-0586-7
View details for Web of Science ID 000303461600005
-
Optimization of the TES-Bias Circuit for a Multiplexed Microcalorimeter Array
JOURNAL OF LOW TEMPERATURE PHYSICS
2012; 167 (5-6): 595–601
View details for DOI 10.1007/s10909-012-0509-7
View details for Web of Science ID 000303461600006
-
Flux-Ramp Modulation for SQUID Multiplexing
JOURNAL OF LOW TEMPERATURE PHYSICS
2012; 167 (5-6): 707–12
View details for DOI 10.1007/s10909-012-0518-6
View details for Web of Science ID 000303461600023
-
SuperCDMS Cold Hardware Design
JOURNAL OF LOW TEMPERATURE PHYSICS
2012; 167 (5-6): 1167-1172
View details for DOI 10.1007/s10909-012-0584-9
View details for Web of Science ID 000303461600093
-
THE ATACAMA COSMOLOGY TELESCOPE: HIGH-RESOLUTION SUNYAEV-ZEL'DOVICH ARRAY OBSERVATIONS OF ACT SZE-SELECTED CLUSTERS FROM THE EQUATORIAL STRIP
ASTROPHYSICAL JOURNAL
2012; 751 (1)
View details for DOI 10.1088/0004-637X/751/1/12
View details for Web of Science ID 000303814600012
-
An 84 Pixel All-Silicon Corrugated Feedhorn for CMB Measurements
14th International Workshop on Low Temperature Particle Detection (LTD)
SPRINGER/PLENUM PUBLISHERS. 2012: 522–27
View details for DOI 10.1007/s10909-011-0428-z
View details for Web of Science ID 000302093500065
-
Commissioning SCUBA-2 at JCMT and Optimising the Performance of the Superconducting TES Arrays
SPRINGER/PLENUM PUBLISHERS. 2012: 152–60
View details for DOI 10.1007/s10909-012-0601-z
View details for Web of Science ID 000302093500011
-
Magnetically Coupled Microcalorimeters
SPRINGER/PLENUM PUBLISHERS. 2012: 254–68
View details for DOI 10.1007/s10909-012-0544-4
View details for Web of Science ID 000302093500027
-
THE ATACAMA COSMOLOGY TELESCOPE: A MEASUREMENT OF THE PRIMORDIAL POWER SPECTRUM
ASTROPHYSICAL JOURNAL
2012; 749 (1)
View details for DOI 10.1088/0004-637X/749/1/90
View details for Web of Science ID 000302175500090
-
Code-division multiplexing for x-ray microcalorimeters
APPLIED PHYSICS LETTERS
2012; 100 (7)
View details for DOI 10.1063/1.3684807
View details for Web of Science ID 000300436800049
-
CORRELATIONS IN THE (SUB) MILLIMETER BACKGROUND FROM ACT x BLAST
ASTROPHYSICAL JOURNAL
2012; 744 (1)
View details for Web of Science ID 000298408300040
-
Optimization and sensitivity of the Keck Array
Conference on Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.926934
View details for Web of Science ID 000312884000038
-
BICEP2 and Keck Array operational overview and status of observations
Conference on Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.925731
View details for Web of Science ID 000312884000037
-
Update on the Micro-X Sounding Rocket Payload
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.927167
View details for Web of Science ID 000312391600038
-
Scaling the summit of the submillimetre: instrument performance of SCUBA-2
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.926613
View details for Web of Science ID 000312884000007
-
Performance and on-sky optical characterization of the SPTpol instrument
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.925586
View details for Web of Science ID 000312884000042
-
SPTpol: an instrument for CMB polarization measurements with the South Pole Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.927286
View details for Web of Science ID 000312884000041
-
Feedhorn-Coupled TES Polarimeter Camera Modules at 150 GHz for CMB Polarization Measurements with SPTpol
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.927172
View details for Web of Science ID 000312884000097
-
Design and characterization of 90 GHz feedhorn-coupled TES polarimeter pixels in the SPTpol camera
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.927035
View details for Web of Science ID 000312884000096
-
South Pole Telescope Software Systems: Control, Monitoring, and Data Acquisition
Conference On Software and Cyberinfrastructure for Astronomy II
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.925808
View details for Web of Science ID 000312888700028
-
Design and first-light performance of TES bolometer arrays for submillimeter spectroscopy with ZEUS-2
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.927237
View details for Web of Science ID 000312884000006
-
The GISMO-2*Bolometer Camera
SPIE-INT SOC OPTICAL ENGINEERING. 2012
View details for DOI 10.1117/12.927037
View details for Web of Science ID 000312884000024
-
THE ATACAMA COSMOLOGY TELESCOPE: CALIBRATION WITH THE WILKINSON MICROWAVE ANISOTROPY PROBE USING CROSS-CORRELATIONS
ASTROPHYSICAL JOURNAL
2011; 740 (2)
View details for DOI 10.1088/0004-637X/740/2/86
View details for Web of Science ID 000296762900036
-
Large microcalorimeter arrays for high-resolution X- and gamma-ray spectroscopy
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
2011; 652 (1): 302–5
View details for DOI 10.1016/j.nima.2010.09.154
View details for Web of Science ID 000295765000075
-
THE ATACAMA COSMOLOGY TELESCOPE: COSMOLOGICAL PARAMETERS FROM THE 2008 POWER SPECTRUM
ASTROPHYSICAL JOURNAL
2011; 739 (1)
View details for DOI 10.1088/0004-637X/739/1/52
View details for Web of Science ID 000294955700052
-
SPIDER OPTIMIZATION. II. OPTICAL, MAGNETIC, AND FOREGROUND EFFECTS
ASTROPHYSICAL JOURNAL
2011; 738 (1)
View details for DOI 10.1088/0004-637X/738/1/63
View details for Web of Science ID 000294015500063
-
THE ATACAMA COSMOLOGY TELESCOPE: SUNYAEV-ZEL'DOVICH-SELECTED GALAXY CLUSTERS AT 148 GHz IN THE 2008 SURVEY
ASTROPHYSICAL JOURNAL
2011; 737 (2)
View details for DOI 10.1088/0004-637X/737/2/61
View details for Web of Science ID 000294013600015
-
THE ATACAMA COSMOLOGY TELESCOPE: DETECTION OF SUNYAEV-ZEL'DOVICH DECREMENT IN GROUPS AND CLUSTERS ASSOCIATED WITH LUMINOUS RED GALAXIES
ASTROPHYSICAL JOURNAL
2011; 736 (1)
View details for DOI 10.1088/0004-637X/736/1/39
View details for Web of Science ID 000292645600039
-
Evidence for Dark Energy from the Cosmic Microwave Background Alone Using the Atacama Cosmology Telescope Lensing Measurements
PHYSICAL REVIEW LETTERS
2011; 107 (1)
Abstract
For the first time, measurements of the cosmic microwave background radiation (CMB) alone favor cosmologies with w = -1 dark energy over models without dark energy at a 3.2-sigma level. We demonstrate this by combining the CMB lensing deflection power spectrum from the Atacama Cosmology Telescope with temperature and polarization power spectra from the Wilkinson Microwave Anisotropy Probe. The lensing data break the geometric degeneracy of different cosmological models with similar CMB temperature power spectra. Our CMB-only measurement of the dark energy density Ω(Λ) confirms other measurements from supernovae, galaxy clusters, and baryon acoustic oscillations, and demonstrates the power of CMB lensing as a new cosmological tool.
View details for DOI 10.1103/PhysRevLett.107.021302
View details for Web of Science ID 000292392400006
-
Detection of the Power Spectrum of Cosmic Microwave Background Lensing by the Atacama Cosmology Telescope
PHYSICAL REVIEW LETTERS
2011; 107 (1)
Abstract
We report the first detection of the gravitational lensing of the cosmic microwave background through a measurement of the four-point correlation function in the temperature maps made by the Atacama Cosmology Telescope. We verify our detection by calculating the levels of potential contaminants and performing a number of null tests. The resulting convergence power spectrum at 2° angular scales measures the amplitude of matter density fluctuations on comoving length scales of around 100 Mpc at redshifts around 0.5 to 3. The measured amplitude of the signal agrees with Lambda cold dark matter cosmology predictions. Since the amplitude of the convergence power spectrum scales as the square of the amplitude of the density fluctuations, the 4σ detection of the lensing signal measures the amplitude of density fluctuations to 12%.
View details for DOI 10.1103/PhysRevLett.107.021301
View details for Web of Science ID 000292392400005
-
THE RADIO-2 mm SPECTRAL INDEX OF THE CRAB NEBULA MEASURED WITH GISMO
ASTROPHYSICAL JOURNAL
2011; 734 (1)
View details for DOI 10.1088/0004-637X/734/1/54
View details for Web of Science ID 000291026900054
-
Strongly quadrature-dependent noise in superconducting microresonators measured at the vacuum-noise limit
APPLIED PHYSICS LETTERS
2011; 98 (23)
View details for DOI 10.1063/1.3597156
View details for Web of Science ID 000291658900049
-
OVERVIEW OF THE ATACAMA COSMOLOGY TELESCOPE: RECEIVER, INSTRUMENTATION, AND TELESCOPE SYSTEMS
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2011; 194 (2)
View details for DOI 10.1088/0067-0049/194/2/41
View details for Web of Science ID 000291675700025
-
Design and Testing of Superconducting Microwave Passive Components for Quantum Information Processing
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2011; 21 (3): 452–55
View details for DOI 10.1109/TASC.2010.2089403
View details for Web of Science ID 000291050500084
-
Stability of Al-Mn Transition Edge Sensors for Frequency Domain Multiplexing
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2011; 21 (3): 203–6
View details for DOI 10.1109/TASC.2010.2090630
View details for Web of Science ID 000291050500025
-
Time-Division SQUID Multiplexers With Reduced Sensitivity to External Magnetic Fields
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2011; 21 (3): 298–301
View details for DOI 10.1109/TASC.2010.2091483
View details for Web of Science ID 000291050500047
-
Quantum State Tomography of an Itinerant Squeezed Microwave Field
PHYSICAL REVIEW LETTERS
2011; 106 (22): 220502
Abstract
We perform state tomography of an itinerant squeezed state of the microwave field prepared by a Josephson parametric amplifier (JPA). We use a second JPA as a preamplifier to improve the quantum efficiency of the field quadrature measurement from 2% to 36%±4%. Without correcting for the detection inefficiency we observe a minimum quadrature variance which is 68(-7)(+9)% of the variance of the vacuum. We reconstruct the state's density matrix by a maximum likelihood method and infer that the squeezed state has a minimum variance less than 40% of the vacuum, with uncertainty mostly caused by calibration systematics.
View details for DOI 10.1103/PhysRevLett.106.220502
View details for Web of Science ID 000291151700002
View details for PubMedID 21702586
-
Al-Mn Transition Edge Sensors for Cosmic Microwave Background Polarimeters
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
2011; 21 (3): 196–98
View details for DOI 10.1109/TASC.2010.2090313
View details for Web of Science ID 000291050500023
-
THE ATACAMA COSMOLOGY TELESCOPE: COSMOLOGY FROM GALAXY CLUSTERS DETECTED VIA THE SUNYAEV-ZEL'DOVICH EFFECT
ASTROPHYSICAL JOURNAL
2011; 732 (1)
View details for DOI 10.1088/0004-637X/732/1/44
View details for Web of Science ID 000289626500044
-
THE ATACAMA COSMOLOGY TELESCOPE: EXTRAGALACTIC SOURCES AT 148 GHz IN THE 2008 SURVEY
ASTROPHYSICAL JOURNAL
2011; 731 (2)
View details for DOI 10.1088/0004-637X/731/2/100
View details for Web of Science ID 000289779600023
-
THE ATACAMA COSMOLOGY TELESCOPE: A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND POWER SPECTRUM AT 148 AND 218 GHz FROM THE 2008 SOUTHERN SURVEY
ASTROPHYSICAL JOURNAL
2011; 729 (1)
View details for DOI 10.1088/0004-637X/729/1/62
View details for Web of Science ID 000287255300062
-
High-Resolution Passive Video-Rate Imaging at 350 GHz
SPIE-INT SOC OPTICAL ENGINEERING. 2011
View details for DOI 10.1117/12.884374
View details for Web of Science ID 000294908500005
-
THE ATACAMA COSMOLOGY TELESCOPE (ACT): BEAM PROFILES AND FIRST SZ CLUSTER MAPS
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
2010; 191 (2): 423-438
View details for DOI 10.1088/0067-0049/191/2/423
View details for Web of Science ID 000285185200013
-
THE ATACAMA COSMOLOGY TELESCOPE: PHYSICAL PROPERTIES AND PURITY OF A GALAXY CLUSTER SAMPLE SELECTED VIA THE SUNYAEV-ZEL'DOVICH EFFECT
ASTROPHYSICAL JOURNAL
2010; 723 (2): 1523-1541
View details for DOI 10.1088/0004-637X/723/2/1523
View details for Web of Science ID 000284093700045
-
THE ATACAMA COSMOLOGY TELESCOPE: A MEASUREMENT OF THE 600 < l < 8000 COSMIC MICROWAVE BACKGROUND POWER SPECTRUM AT 148 GHz
ASTROPHYSICAL JOURNAL
2010; 722 (2): 1148-1161
View details for DOI 10.1088/0004-637X/722/2/1148
View details for Web of Science ID 000284075400014
-
Noise performance of lumped element direct current superconducting quantum interference device amplifiers in the 4-8 GHz range
APPLIED PHYSICS LETTERS
2010; 97 (14)
View details for DOI 10.1063/1.3497008
View details for Web of Science ID 000282765700046
-
IMPLICATIONS OF A HIGH ANGULAR RESOLUTION IMAGE OF THE SUNYAEV-ZEL'DOVICH EFFECT IN RXJ1347-1145
ASTROPHYSICAL JOURNAL
2010; 716 (1): 739–45
View details for DOI 10.1088/0004-637X/716/1/739
View details for Web of Science ID 000277960000054
-
Code-division SQUID multiplexing
APPLIED PHYSICS LETTERS
2010; 96 (16)
View details for DOI 10.1063/1.3378772
View details for Web of Science ID 000277020600067
-
Code-division multiplexing of superconducting transition-edge sensor arrays
IOP PUBLISHING LTD. 2010
View details for DOI 10.1088/0953-2048/23/3/034004
View details for Web of Science ID 000274800500005
-
Measurement of ion cascade energies through resolution degradation of alpha particle microcalorimeters
JOURNAL OF APPLIED PHYSICS
2010; 107 (4)
View details for DOI 10.1063/1.3309279
View details for Web of Science ID 000275028900101
-
Optical Design of the EPIC-IM Crossed Dragone Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857423
View details for Web of Science ID 000285835600051
-
Optical Performance of the BICEP2 Telescope at the South Pole
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857868
View details for Web of Science ID 000285838800023
-
Initial performance of the BICEP2 antenna-coupled superconducting bolometers at the South Pole
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857861
View details for Web of Science ID 000285838800041
-
The Keck Array: a pulse tube cooled CMB polarimeter
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857871
View details for Web of Science ID 000285838800050
-
The BICEP2 CMB polarization experiment
Conference on Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857864
View details for Web of Science ID 000285838800040
-
Antenna-coupled TES Bolometer Arrays for BICEP2/Keck and SPIDER
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857914
View details for Web of Science ID 000285838800012
-
Optical Efficiency of Feedhorn-Coupled TES Polarimeters for Next-Generation CMB Instruments
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.859478
View details for Web of Science ID 000285838800057
-
Design and performance of the Spider instrument
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857715
View details for Web of Science ID 000285838800047
-
ACTPol: A polarization-sensitive receiver for the Atacama Cosmology Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857464
View details for Web of Science ID 000285838800051
-
SPIDER: a balloon-borne CMB polarimeter for large angular scales
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857720
View details for Web of Science ID 000285838800046
-
Thermal Architecture for the SPIDER flight cryostat
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857925
View details for Web of Science ID 000285838800045
-
Characterising the SCUBA-2 superconducting bolometer arrays
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.856839
View details for Web of Science ID 000285838800002
-
Progress on the Micro-X sounding rocket X-ray telescope: completion of flight hardware
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857034
View details for Web of Science ID 000285506200052
-
The X-ray Microcalorimeter Spectrometer onboard of IXO
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.856018
View details for Web of Science ID 000285506200045
-
Characterising and calibrating the SCUBA-2 superconducting bolometer arrays for science observing
IEEE. 2010
View details for Web of Science ID 000288130600549
-
Corrugated Silicon Platelet Feed Horn Array for CMB Polarimetry at 150 GHz
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857701
View details for Web of Science ID 000285838800021
-
5,120 Superconducting Bolometers for the PIPER Balloon-Borne CMB Polarization Experiment
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.856491
View details for Web of Science ID 000285838800049
-
Modeling and characterization of the SPIDER half-wave plate
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857837
View details for Web of Science ID 000285838800064
-
The Primordial Inflation Polarization Explorer (PIPER)
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857119
View details for Web of Science ID 000285838800048
-
ZEUS-2: a second generation submillimeter grating spectrometer for exploring distant galaxies
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.857018
View details for Web of Science ID 000285838800026
-
A 350 GHz high-resolution high-sensitivity passive video imaging system
SPIE-INT SOC OPTICAL ENGINEERING. 2010
View details for DOI 10.1117/12.852932
View details for Web of Science ID 000284869900017
-
90 GHz AND 150 GHz OBSERVATIONS OF THE ORION M42 REGION. A SUBMILLIMETER TO RADIO ANALYSIS
ASTROPHYSICAL JOURNAL
2009; 705 (1): 226–36
View details for DOI 10.1088/0004-637X/705/1/226
View details for Web of Science ID 000270903200018
-
Microcalorimeter arrays for ultra-high energy resolution X- and gamma-ray detection
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
2009; 282 (1): 227–32
View details for DOI 10.1007/s10967-009-0223-3
View details for Web of Science ID 000271027400044
-
Superconducting quantum interference device amplifiers with over 27 GHz of gain-bandwidth product operated in the 4-8 GHz frequency range
APPLIED PHYSICS LETTERS
2009; 95 (9)
View details for DOI 10.1063/1.3220061
View details for Web of Science ID 000269625800042
-
90 GHz OBSERVATIONS OF M87 AND HYDRA A
ASTROPHYSICAL JOURNAL
2009; 701 (2): 1872–79
View details for DOI 10.1088/0004-637X/701/2/1872
View details for Web of Science ID 000268761500076
-
Large-Area Microcalorimeter Detectors for Ultra-High-Resolution X-Ray and Gamma-Ray Spectroscopy
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
2009; 56 (4): 2299–2302
View details for DOI 10.1109/TNS.2009.2022754
View details for Web of Science ID 000269155000007
-
A First Application of the FRAM Isotopic Analysis Code to High-Resolution Microcalorimetry Gamma-Ray Spectra
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
2009; 56 (4): 2284–89
View details for DOI 10.1109/TNS.2009.2022938
View details for Web of Science ID 000269155000004
-
Application of GEANT4 to the Simulation of High Energy-Resolution Microcalorimeter Detectors
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
2009; 56 (4): 2294–98
View details for DOI 10.1109/TNS.2009.2022160
View details for Web of Science ID 000269155000006
-
Improved Isotopic Analysis With a Large Array of Gamma-Ray Microcalorimeters
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2009: 536–39
View details for DOI 10.1109/TASC.2009.2017945
View details for Web of Science ID 000268282000096
-
Micro-X, the TES X-ray Imaging Rocket: First Year Progress
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2009: 553–56
View details for DOI 10.1109/TASC.2009.2019129
View details for Web of Science ID 000268282000100
-
Bandwidth and Dynamic Range of a Widely Tunable Josephson Parametric Amplifier
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2009: 944–47
View details for DOI 10.1109/TASC.2009.2018119
View details for Web of Science ID 000268282000191
-
Time-of-Flight Mass Spectrometry With Latching Nb Meander Detectors
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2009: 382–85
View details for DOI 10.1109/TASC.2009.2018507
View details for Web of Science ID 000268282000060
-
Anomalous Thermal Behavior in Microcalorimeter Gamma-Ray Detectors
AMER INST PHYSICS. 2009: 733–36
View details for Web of Science ID 000281588500163
-
The X-Ray Microcalorimeter Spectrometer for the International X-Ray Observatory
AMER INST PHYSICS. 2009: 757-+
View details for DOI 10.1063/1.3292449
View details for Web of Science ID 000281588500168
-
Antenna-coupled TES Arrays For The BICEP2/Keck and SPIDER polarimeters
AMER INST PHYSICS. 2009: 471-+
View details for DOI 10.1063/1.3292380
View details for Web of Science ID 000281588500104
-
Shannon Limits for Low-Temperature Detector Readout
AMER INST PHYSICS. 2009: 229–36
View details for DOI 10.1063/1.3292320
View details for Web of Science ID 000281588500050
-
Characterization of Thermal Cross-talk in a gamma-ray Microcalorimeter Array
AMER INST PHYSICS. 2009: 34-+
View details for DOI 10.1063/1.3292349
View details for Web of Science ID 000281588500006
-
New Science Case for the Micro-X High Energy Resolution Microcalorimeter X-ray Imaging Rocket
AMER INST PHYSICS. 2009: 426-+
View details for DOI 10.1063/1.3292368
View details for Web of Science ID 000281588500093
-
Optimal filtering, record length, and count rate in transition-edge-sensor microcalorimeters
AMER INST PHYSICS. 2009: 450-+
View details for DOI 10.1063/1.3292375
View details for Web of Science ID 000281588500099
-
Characterizing and Modeling the Noise and Complex Impedance of Feedhorn-Coupled TES Polarimeters
AMER INST PHYSICS. 2009: 211-+
View details for DOI 10.1063/1.3292317
View details for Web of Science ID 000281588500046
-
Electronics for a Next-Generation SQUID-Based Time-Domain Multiplexing System
AMER INST PHYSICS. 2009: 237-+
View details for DOI 10.1063/1.3292321
View details for Web of Science ID 000281588500051
-
The Detector and Readout Systems of the Micro-X High Resolution Microcalorimeter X-Ray Imaging Rocket
AMER INST PHYSICS. 2009: 434-+
View details for Web of Science ID 000281588500095
-
Optical properties of Feedhorn-coupled TES polarimeters for CMB polarimetry
AMER INST PHYSICS. 2009: 479-+
View details for DOI 10.1063/1.3292382
View details for Web of Science ID 000281588500106
-
Planar Orthomode Transducers for Feedhorn-coupled TES Polarimeters
AMER INST PHYSICS. 2009: 490-+
View details for DOI 10.1063/1.3292386
View details for Web of Science ID 000281588500109
-
The Atacama B-Mode Search: CMB Polarimetry with Transition-Edge-Sensor Bolometers
AMER INST PHYSICS. 2009: 494-+
View details for DOI 10.1063/1.3292387
View details for Web of Science ID 000281588500110
-
Measurements of Bolometer Uniformity for Feedhorn Coupled TES Polarimeters
AMER INST PHYSICS. 2009: 498-+
View details for DOI 10.1063/1.3292388
View details for Web of Science ID 000281588500111
-
Feedhorn-Coupled TES Polarimeters for Next-Generation CMB Instruments
AMER INST PHYSICS. 2009: 515-+
View details for DOI 10.1063/1.3292392
View details for Web of Science ID 000281588500115
-
SPTpol: an instrument for CMB polarization
AMER INST PHYSICS. 2009: 511-+
View details for Web of Science ID 000281588500114
-
MICRO-X, THE HIGH RESOLUTION SOUNDING ROCKET X-RAY IMAGING SPECTROMETER
EUROPEAN SPACE AGENCY. 2009: 573–77
View details for Web of Science ID 000308797400100
-
Progress Toward Corrugated Feed Horn Arrays in Silicon
AMER INST PHYSICS. 2009: 375–78
View details for DOI 10.1063/1.3292356
View details for Web of Science ID 000281588500083
-
a Dependence of Excess Noise on the Partial Derivatives of Resistance in Superconducting Transition Edge Sensors
AMER INST PHYSICS. 2009: 31-+
View details for DOI 10.1063/1.3292343
View details for Web of Science ID 000281588500005
-
SPIDER OPTIMIZATION: PROBING THE SYSTEMATICS OF A LARGE-SCALE B-MODE EXPERIMENT
ASTROPHYSICAL JOURNAL
2008; 689 (2): 655–65
View details for DOI 10.1086/592732
View details for Web of Science ID 000261189600001
-
Amplification and squeezing of quantum noise with a tunable Josephson metamaterial
NATURE PHYSICS
2008; 4 (12): 929–31
View details for DOI 10.1038/nphys1090
View details for Web of Science ID 000261386000013
-
Superconducting calorimetric alpha particle sensors for nuclear nonproliferation applications
APPLIED PHYSICS LETTERS
2008; 93 (12)
View details for DOI 10.1063/1.2978204
View details for Web of Science ID 000259799100097
-
Input impedance and gain of a gigahertz amplifier using a dc superconducting quantum interference device in a quarter wave resonator
APPLIED PHYSICS LETTERS
2008; 93 (8)
View details for DOI 10.1063/1.2970967
View details for Web of Science ID 000259011900058
-
Analysis of nuclear material by alpha spectroscopy with a transition-edge microcalorimeter
JOURNAL OF LOW TEMPERATURE PHYSICS
2008; 151 (3-4): 1067–73
View details for DOI 10.1007/s10909-008-9789-3
View details for Web of Science ID 000254202200077
-
Functional description of read-out electronics for time-domain multiplexed bolometers for millimeter and sub-millimeter astronomy
JOURNAL OF LOW TEMPERATURE PHYSICS
2008; 151 (3-4): 908–14
View details for DOI 10.1007/s10909-008-9772-z
View details for Web of Science ID 000254202200052
-
The EBIT calorimeter spectrometer: A new, permanent user facility at the LLNL EBIT
JOURNAL OF LOW TEMPERATURE PHYSICS
2008; 151 (3-4): 1061–66
View details for DOI 10.1007/s10909-008-9788-4
View details for Web of Science ID 000254202200076
-
Operation of an X-ray transition-edge sensor cooled by tunnel junction refrigerators
JOURNAL OF LOW TEMPERATURE PHYSICS
2008; 151 (3-4): 635–39
View details for DOI 10.1007/s10909-008-9727-4
View details for Web of Science ID 000254202200008
-
Micro-X: Mission overview and science goals
JOURNAL OF LOW TEMPERATURE PHYSICS
2008; 151 (3-4): 740–45
View details for DOI 10.1007/s10909-008-9732-7
View details for Web of Science ID 000254202200025
-
A kilopixel array of TES bolometers for ACT: Development, testing, and first light
JOURNAL OF LOW TEMPERATURE PHYSICS
2008; 151 (3-4): 690–96
View details for DOI 10.1007/s10909-008-9729-2
View details for Web of Science ID 000254202200017
-
X-ray microcalorimeter research for solar physics at LMSAL and NIST: An update
JOURNAL OF LOW TEMPERATURE PHYSICS
2008; 151 (3-4): 721–26
View details for DOI 10.1007/s10909-008-9735-4
View details for Web of Science ID 000254202200022
-
An optical system for body imaging from a distance using near-TeraHertz frequencies
JOURNAL OF LOW TEMPERATURE PHYSICS
2008; 151 (3-4): 777–83
View details for DOI 10.1007/s10909-008-9746-1
View details for Web of Science ID 000254202200031
-
Toward a 256-pixel array of gamma-ray microcalorimeters for nuclear-materials analysis
JOURNAL OF LOW TEMPERATURE PHYSICS
2008; 151 (3-4): 754–59
View details for DOI 10.1007/s10909-008-9750-5
View details for Web of Science ID 000254202200027
-
A TDMA hybrid SQUID multiplexer
JOURNAL OF LOW TEMPERATURE PHYSICS
2008; 151 (3-4): 927–33
View details for DOI 10.1007/s10909-008-9769-7
View details for Web of Science ID 000254202200055
-
High resolution x-ray transition-edge sensor cooled by tunnel junction refrigerators
APPLIED PHYSICS LETTERS
2008; 92 (16)
View details for DOI 10.1063/1.2913160
View details for Web of Science ID 000255456100074
-
Design, fabrication, and multiplexing of magnetic calorimeter X-ray detectors with high-efficiency SQUID readout
SPRINGER/PLENUM PUBLISHERS. 2008: 363–68
View details for DOI 10.1007/s10909-007-9656-7
View details for Web of Science ID 000253697900059
-
Demonstration of a multiplexer of dissipationless superconducting quantum interference devices
APPLIED PHYSICS LETTERS
2008; 92 (2)
View details for DOI 10.1063/1.2803852
View details for Web of Science ID 000252470900116
-
Multiplexed readout of uniform arrays of TES x-ray micro calorimeters suitable for Constellation-X
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.790027
View details for Web of Science ID 000259563700003
-
Instrument design and characterization of the Millimeter Bolometer Array Camera on the Atacama Cosmology Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.789876
View details for Web of Science ID 000262259800007
-
SPIDER: a balloon-borne large-scale CMB polarimeter
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.787446
View details for Web of Science ID 000259561800080
-
MUSTANG: 90 GHz Science with the Green Bank Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.788361
View details for Web of Science ID 000262259800005
-
Characterization of Transition Edge Sensors for the Millimeter Bolometer Array Camera on the Atacama Cosmology Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.789864
View details for Web of Science ID 000262259800021
-
The ClOVER Experiment
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.788927
View details for Web of Science ID 000262259800036
-
The effects of the mechanical performance and alignment of the Atacama Cosmology Telescope on the sensitivity of microwave observations
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.790020
View details for Web of Science ID 000262259800043
-
Opto-mechanical design and performance of a compact three-frequency camera for the Millimeter Bolometer Array Camera on the Atacama Cosmology Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.790078
View details for Web of Science ID 000262259800045
-
Automated SQUID tuning procedure for kilo-pixel arrays of TES bolometers on the Atacama Cosmology Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.789738
View details for Web of Science ID 000262259800058
-
Systems and control software for the Atacama Cosmology Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.790006
View details for Web of Science ID 000261330600086
-
Automatic setup of SCUBA-2 Detector Arrays
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.788816
View details for Web of Science ID 000262259800056
-
Progress on the Micro-X rocket payload
Conference on Space Telescopes and Instrumentation 2008 - Ultraviolet to Gamma Ray
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.789904
View details for Web of Science ID 000259563700111
-
BICEP2/SPUD: Searching for inflation with degree scale polarimetry from the South Pole
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.787997
View details for Web of Science ID 000262259800037
-
Recent developments in transition-edge strip detectors for solar x-rays
SPIE-INT SOC OPTICAL ENGINEERING. 2008
View details for DOI 10.1117/12.790246
View details for Web of Science ID 000259563700110
-
Superconducting absorbers for use in ultra-high resolution gamma-ray spectrometers based on low temperature microcalorimeter arrays
ELSEVIER SCIENCE BV. 2007: 169–72
View details for DOI 10.1016/j.nima.2007.04.032
View details for Web of Science ID 000249348400043
-
Multiplexed microcalorimeter arrays for precision measurements from microwave to gamma-ray wavelengths
ELSEVIER SCIENCE BV. 2007: 161–64
View details for DOI 10.1016/j.nima.2007.04.030
View details for Web of Science ID 000249348400041
-
Evaluation of a microwave SQUID multiplexer prototype
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2007: 705–9
View details for DOI 10.1109/TASC.2007.898118
View details for Web of Science ID 000248442200148
-
14-pixel, multiplexed array of gamma-ray microcalorimeters with 47 eV energy resolution at 103 keV
APPLIED PHYSICS LETTERS
2007; 90 (19)
View details for DOI 10.1063/1.2738371
View details for Web of Science ID 000246413400096
-
MARE, Microcalorimeter Arrays for a Rhenium Experiment: A detector overview
ELSEVIER SCIENCE BV. 2007: 208–10
View details for DOI 10.1016/j.nima.2006.10.198
View details for Web of Science ID 000245129400071
-
Electrical and optical measurements on the first SCUBA-2 prototype 1280 pixel submillimeter superconducting bolometer array
REVIEW OF SCIENTIFIC INSTRUMENTS
2007; 78 (2): 024502
Abstract
SCUBA-2 is a submillimeter camera being built for the James Clerk Maxwell Telescope in Hawaii. Bringing CCD style imaging to the submillimeter for the first time, with over 10000 pixels, it will provide a revolutionary improvement in sensitivity and mapping speed. We present results of the first tests on a prototype 1280 pixel SCUBA-2 subarray; the full instrument will be made up of eight such subarrays. The array is made up of transition edge sensor (TES) detectors, with Mo/Cu bilayers as the sensing element. To keep the number of wires reasonable, a multiplexed readout is used. Unlike previous TES arrays, an in-focal plane multiplexer configuration is used, in which the multiplexing elements are located beneath each pixel. To achieve the required performance, the detectors are operated at a temperature of approximately 120 mK. We describe the results of a basic electrical and optical characterization of the array, demonstrating that it is fully operational. Noise measurements were made on several pixels and gave a noise equivalent power below 2.5 x 10(-17) W HZ(-0.5), within the requirements for SCUBA-2. The construction of the testbed used to carry out these measurements is also described.
View details for DOI 10.1063/1.2436839
View details for Web of Science ID 000244531600036
View details for PubMedID 17578131
-
MUSTANG. First light and current status
IEEE. 2007: 325-+
View details for Web of Science ID 000257936900144
-
SCUBA-2: A large-format CCD-style imager for submillimeter astronomy
SPRINGER-VERLAG BERLIN. 2007: 45-+
View details for DOI 10.1007/978-3-540-39756-4_8
View details for Web of Science ID 000244446300008
-
Superconducting bolometers for submillimeter spectroscopy from ground-based, airborne, and space platforms
ASTRONOMICAL SOC PACIFIC. 2007: 217-+
View details for Web of Science ID 000250716200025
-
Simulating the response of ultra-high energy resolution X- and gamma-ray microcalorimeter detectors
IEEE. 2007: 847–49
View details for DOI 10.1109/NSSMIC.2007.4436461
View details for Web of Science ID 000257380400183
-
Tests of finline-coupled TES bolometers for ClOVER
IEEE. 2007: 175-+
View details for Web of Science ID 000257936900073
-
PAPPA: Primordial anisotropy polarization pathfinder array
ELSEVIER SCI LTD. 2006: 1009–14
View details for DOI 10.1016/j.newar.2006.09.024
View details for Web of Science ID 000243239900026
-
Seeing with superconductors
SCIENTIFIC AMERICAN
2006; 295 (5): 86-+
View details for DOI 10.1038/scientificamerican1106-86
View details for Web of Science ID 000241316500032
View details for PubMedID 17076088
-
Array-compatible transition-edge sensor microcalorimeter gamma-ray detector with 42 eV energy resolution at 103 keV
APPLIED PHYSICS LETTERS
2006; 89 (12)
View details for DOI 10.1063/1.2352712
View details for Web of Science ID 000240680300141
-
The SuperCDMS proposal for dark matter detection
11th International Workshop on Low-Temperature Detectors
ELSEVIER SCIENCE BV. 2006: 411–13
View details for DOI 10.1016/j.nima.2005.12.025
View details for Web of Science ID 000236974700027
-
Antenna-coupled TES bolometers for the SPIDER experiment
ELSEVIER SCIENCE BV. 2006: 608–10
View details for DOI 10.1016/j.nima.2005.12.092
View details for Web of Science ID 000236974700089
-
Erbium-doped gold sensor films for magnetic microcalorimeter x-ray detectors
JOURNAL OF APPLIED PHYSICS
2006; 99 (8)
View details for DOI 10.1063/1.2159207
View details for Web of Science ID 000237404200097
-
Microwave SQUID multiplexers for low-temperature detectors
ELSEVIER SCIENCE BV. 2006: 802–4
View details for DOI 10.1016/j.nima.2005.12.144
View details for Web of Science ID 000236974700149
-
Optimization of transition-edge calorimeter performance
ELSEVIER SCIENCE BV. 2006: 422–25
View details for DOI 10.1016/j.nima.2005.12.173
View details for Web of Science ID 000236974700030
-
Fabrication of prototype imaging arrays for SCUBA-2
ELSEVIER SCIENCE BV. 2006: 513–15
View details for DOI 10.1016/j.nima.2005.12.042
View details for Web of Science ID 000236974700058
-
Normal metal-insulator-superconductor junction technology for bolometers
ELSEVIER SCIENCE BV. 2006: 516–18
View details for DOI 10.1016/j.nima.2005.12.043
View details for Web of Science ID 000236974700059
-
Development of a solid-state 100 mK refrigerator for user-supplied microelectronics
ELSEVIER SCIENCE BV. 2006: 633–35
View details for DOI 10.1016/j.nima.2005.12.089
View details for Web of Science ID 000236974700097
-
Thermodynamics of nonlinear bolometers near equilibrium
ELSEVIER SCIENCE BV. 2006: 718–20
View details for DOI 10.1016/j.nima.2005.12.115
View details for Web of Science ID 000236974700123
-
Digital readouts for large microwave low-temperature detector arrays
ELSEVIER SCIENCE BV. 2006: 799–801
View details for DOI 10.1016/j.nima.2005.12.208
View details for Web of Science ID 000236974700148
-
Progress toward kilopixel arrays: 3.8 eV microcalorimeter resolution in 8-channel SQUID multiplexer
ELSEVIER SCIENCE BV. 2006: 808–10
View details for DOI 10.1016/j.nima.2005.12.146
View details for Web of Science ID 000236974700151
-
TES imaging array technology for ClOVER
SPIE-INT SOC OPTICAL ENGINEERING. 2006
View details for DOI 10.1117/12.670792
View details for Web of Science ID 000240593600071
-
The Primordial Anisotropy Polarization Pathfinder Array (PAPPA): Instrument overview and status
SPIE-INT SOC OPTICAL ENGINEERING. 2006
View details for DOI 10.1117/12.671940
View details for Web of Science ID 000240593600052
-
SCUBA-2: a 10,000 pixel submillimeter camera for the James Clerk Maxwell Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2006
View details for DOI 10.1117/12.671186
View details for Web of Science ID 000240593600047
-
Characterization of a prototype SCUBA-2 1280 pixel submillimetre superconducting bolometer array
SPIE-INT SOC OPTICAL ENGINEERING. 2006
View details for DOI 10.1117/12.671310
View details for Web of Science ID 000240593600048
-
Monte Carlo Studies of High Resolution Microcalorimeter Detectors
IEEE. 2006: 1268–72
View details for DOI 10.1109/NSSMIC.2006.356074
View details for Web of Science ID 000288875601069
-
Microcalorimeter Nuclear Spectrometers
IEEE. 2006: 544–47
View details for Web of Science ID 000288875600119
-
High Resolution Alpha Particle Spectroscopy with Cryogenic Microcalorimeters
IEEE. 2006: 1630–32
View details for Web of Science ID 000288875601143
-
First tests of prototype SCUBA-2 superconducting bolometer array
AMER INST PHYSICS. 2006: 1611-+
View details for Web of Science ID 000243396400731
-
A 90 GHz bolometer array for the Green Bank Telescope.
SPIE-INT SOC OPTICAL ENGINEERING. 2006
View details for DOI 10.1117/12.672166
View details for Web of Science ID 000240593600044
-
Science with Micro-X: the TES microcalorimeter X-ray imaging rocket - art. no. 62660A
SPIE-INT SOC OPTICAL ENGINEERING. 2006: A2660
View details for DOI 10.1117/12.672680
View details for Web of Science ID 000240015400009
-
Optimized transition-edge x-ray microcalorimeter with 2.4 eV energy resolution at 5.9 keV
APPLIED PHYSICS LETTERS
2005; 87 (19)
View details for DOI 10.1063/1.2061865
View details for Web of Science ID 000233058800079
-
Measurements and modeling of phonon cooling by electron-tunneling refrigerators
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2005: 556–59
View details for DOI 10.1109/TASC.2005.849917
View details for Web of Science ID 000229765300120
-
Cooling of bulk material by electron-tunneling refrigerators
APPLIED PHYSICS LETTERS
2005; 86 (17)
View details for DOI 10.1063/1.1914966
View details for Web of Science ID 000229185500066
-
Prototype detector technology for the SCUBA-2 submillimetre bolometer array
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART N-JOURNAL OF NANOMATERIALS NANOENGINEERING AND NANOSYSTEMS
2005; 219 (1): 11–21
View details for DOI 10.1243/174034905X77337
View details for Web of Science ID 000218213300002
-
A superconductor-insulator-normal metal bolometer with microwave readout suitable for large-format arrays
APPLIED PHYSICS LETTERS
2005; 86 (5)
View details for DOI 10.1063/1.1855411
View details for Web of Science ID 000227144700058
-
Development of large arrays of microcalorimeters for precision gamma-ray Spectroscopy
IEEE. 2005: 1154–58
View details for Web of Science ID 000241851901119
-
Transition-edge sensors
CRYOGENIC PARTICLE DETECTION
2005; 99: 63–149
View details for Web of Science ID 000231009400003
-
Electron probe microanalysis with cryogenic detectors
CRYOGENIC PARTICLE DETECTION
2005; 99: 267–312
View details for Web of Science ID 000231009400006
-
Time-division multiplexing of high-resolution x-ray microcalorimeters: Four pixels and beyond
APPLIED PHYSICS LETTERS
2004; 85 (20): 4762–64
View details for DOI 10.1063/1.1823041
View details for Web of Science ID 000225166400068
-
Microwave SQUID multiplexer
APPLIED PHYSICS LETTERS
2004; 85 (11): 2107–9
View details for DOI 10.1063/1.1791733
View details for Web of Science ID 000223923300080
-
Superconducting transition edge sensor using dilute AlMn alloys
APPLIED PHYSICS LETTERS
2004; 85 (11): 2137–39
View details for DOI 10.1063/1.1789575
View details for Web of Science ID 000223923300090
-
Characterization and reduction of unexplained noise in superconducting transition-edge sensors
APPLIED PHYSICS LETTERS
2004; 84 (21): 4206–8
View details for DOI 10.1063/1.1753058
View details for Web of Science ID 000221404700023
-
The Advanced Technology Solar Spectroscopic Imager - a novel experiment employing a transition-edge sensor to probe the soft X-ray solar corona
10th International Workshop on Low Temperature Detectors
ELSEVIER SCIENCE BV. 2004: 372–75
View details for DOI 10.1016/j.nima.2003.11.270
View details for Web of Science ID 000220606900098
-
SCUBA-2 arrays to system interfaces
ELSEVIER SCIENCE BV. 2004: 427–30
View details for DOI 10.1016/j.nima.2003.11.355
View details for Web of Science ID 000220606900113
-
In-focal-plane SQUID multiplexer
ELSEVIER SCIENCE BV. 2004: 544–47
View details for DOI 10.1016/j.nima.2003.11.310
View details for Web of Science ID 000220606900146
-
Lithographically patterned magnetic calorimeter X-ray detectors with integrated SQUID readout
ELSEVIER SCIENCE BV. 2004: 52–55
View details for DOI 10.1016/j.nima.2003.11.218
View details for Web of Science ID 000220606900013
-
Suppression of excess noise in Transition-Edge Sensors using magnetic field and geometry
ELSEVIER SCIENCE BV. 2004: 333–35
View details for DOI 10.1016/j.nima.2003.11.260
View details for Web of Science ID 000220606900088
-
A 90 GHz array for the green bank telescope
ELSEVIER SCIENCE BV. 2004: 387–89
View details for DOI 10.1016/j.nima.2003.11.341
View details for Web of Science ID 000220606900102
-
X-ray microcalorimeter arrays fabricated by surface micromachining
ELSEVIER SCIENCE BV. 2004: 435–38
View details for DOI 10.1016/j.nima.2003.11.357
View details for Web of Science ID 000220606900115
-
Fabrication of the SCUBA-2 detector arrays
ELSEVIER SCIENCE BV. 2004: 483–86
View details for DOI 10.1016/j.nima.2003.11.379
View details for Web of Science ID 000220606900129
-
Time-division SQUID multiplexer for the readout of X-ray microcalorimeter arrays
ELSEVIER SCIENCE BV. 2004: 559–61
View details for DOI 10.1016/j.nima.2003.11.314
View details for Web of Science ID 000220606900150
-
Robust infrared filters for X-ray spectroscopy
ELSEVIER SCIENCE BV. 2004: 638–40
View details for DOI 10.1016/j.nima.2003.11.364
View details for Web of Science ID 000220606900172
-
SCUBA-2: A large-format TES array for submillimetre astronomy
10th International Workshop on Low Temperature Detectors
ELSEVIER SCIENCE BV. 2004: 479–82
View details for DOI 10.1016/j.nima.2003.11.378
View details for Web of Science ID 000220606900128
-
Distributed transition-edge sensors for linearized position response in a phonon-mediated X-ray imaging spectrometer
10th International Workshop on Low Temperature Detectors
ELSEVIER SCIENCE BV. 2004: 502–4
View details for DOI 10.1016/j.nima.2003.11.298
View details for Web of Science ID 000220606900134
-
Design and fabrication of the detector technology for SCUBA-2
IEE PROCEEDINGS-SCIENCE MEASUREMENT AND TECHNOLOGY
2004; 151 (2): 110–20
View details for DOI 10.1049/ip-smt:20040088
View details for Web of Science ID 000220713100009
-
Bias conditions of dc-SQUID for a time-domain SQUID multiplexer
REVIEW OF SCIENTIFIC INSTRUMENTS
2004; 75 (2): 502–6
View details for DOI 10.1063/1.1638877
View details for Web of Science ID 000188532400033
-
Design and fabrication of two-dimensional superconducting bolometer arrays
SPIE-INT SOC OPTICAL ENGINEERING. 2004: 647–58
View details for DOI 10.1117/12.552108
View details for Web of Science ID 000224749800063
-
A 90 GHz array for use on the Green Bank Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2004: 1221–29
View details for DOI 10.1117/12.580192
View details for Web of Science ID 000224524300118
-
A planar two-dimensional superconducting bolometer array for the Green Bank Telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2004: 208–19
View details for DOI 10.1117/12.552094
View details for Web of Science ID 000224749800019
-
Prototype system for superconducting quantum interference device multiplexing of large-format transition-edge sensor arrays
REVIEW OF SCIENTIFIC INSTRUMENTS
2003; 74 (10): 4500–4508
View details for DOI 10.1063/1.1605259
View details for Web of Science ID 000185844800041
-
Time-division superconducting quantum interference device multiplexer for transition-edge sensors
REVIEW OF SCIENTIFIC INSTRUMENTS
2003; 74 (8): 3807–15
View details for DOI 10.1063/1.1593809
View details for Web of Science ID 000184346600037
-
Surface micromachining for transition-edge detectors
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2003: 664–67
View details for DOI 10.1109/TASC.2003.813989
View details for Web of Science ID 000184241700145
-
Electronics for arrays of transition edge sensors using digital signal processing
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2003: 618–21
View details for DOI 10.1109/TASC.2003.813963
View details for Web of Science ID 000184241700134
-
Performance of 32-channel time-division SQUID multiplexer for cryogenic detector arrays
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2003: 649–52
View details for DOI 10.1109/TASC.2003.813983
View details for Web of Science ID 000184241700141
-
T-C suppression in superconducting films for use in transition edge sensors
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2003: 661–63
View details for DOI 10.1109/TASC.2003.813988
View details for Web of Science ID 000184241700144
-
SCUBA-2: A large format submillimetre camera on the James Clerk maxwell telescope
SPIE-INT SOC OPTICAL ENGINEERING. 2003: 1–18
View details for DOI 10.1117/12.459152
View details for Web of Science ID 000181847500001
-
Ultralow-background large-format bolometer arrays
SPIE-INT SOC OPTICAL ENGINEERING. 2003: 944–53
View details for DOI 10.1117/12.461576
View details for Web of Science ID 000182018700091
-
SCUBA-2: Developing the detectors
SPIE-INT SOC OPTICAL ENGINEERING. 2003: 19–29
View details for DOI 10.1117/12.459107
View details for Web of Science ID 000181847500002
-
Superconducting Bolometer array architectures
SPIE-INT SOC OPTICAL ENGINEERING. 2003: 148–62
View details for DOI 10.1117/12.459423
View details for Web of Science ID 000181847500014
-
SQUID multiplexers for transition-edge sensors
ELSEVIER SCIENCE BV. 2002: 203–10
View details for DOI 10.1016/S0921-4534(01)01167-4
View details for Web of Science ID 000173942500038
-
Design and fabrication of a two-dimensional superconducting bolometer array for SAFIRE
SPIE-INT SOC OPTICAL ENGINEERING. 2002: 125–35
View details for Web of Science ID 000182226000014
-
Energy dispersive X-ray spectrometry by microcalorimetry for the SEM
SPRINGER-VERLAG WIEN. 2002: 265–74
View details for DOI 10.1007/s006040200030
View details for Web of Science ID 000175560100016
-
First astronomical use of multiplexed transition edge bolometers
AMER INST PHYSICS. 2002: 589–92
View details for Web of Science ID 000176260300134
-
Time-division SQUID multiplexers
AMER INST PHYSICS. 2002: 301–4
View details for Web of Science ID 000176260300069
-
TES detector noise limited readout using SQUID multiplexers
AMER INST PHYSICS. 2002: 321–24
View details for Web of Science ID 000176260300074
-
Microfabricated transition-edge x-ray detectors
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2001: 739–42
View details for DOI 10.1109/77.919451
View details for Web of Science ID 000168285400170
-
Transition edge sensor array development
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2001: 469–72
View details for DOI 10.1109/77.919384
View details for Web of Science ID 000168285400103
-
Sub-picowatt precision radiometry using superconducting transition edge sensor bolometers
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2001: 593–96
View details for DOI 10.1109/77.919415
View details for Web of Science ID 000168285400134
-
SQUID operational amplifier
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2001: 1265–70
View details for DOI 10.1109/77.919580
View details for Web of Science ID 000168285400297
-
Status of CDMS search for dark matter WIMPs
20th Texas Symposium on Relativistic Astrophysics
AMER INST PHYSICS. 2001: 107–118
View details for Web of Science ID 000172735600016
-
Energy dispersive x-ray spectrometry with the transition edge sensor microcalorimeter: A revolutionary advance in materials microanalysis
MATERIALS RESEARCH SOCIETY. 2001: 75–80
View details for Web of Science ID 000172649100009
-
Low voltage microanalysis using microcalorimeter EDS
AMER INST PHYSICS. 2001: 506–10
View details for Web of Science ID 000168183800077
-
Results of the Cryogenic Dark Matter Search
3rd International Conference on Dark Matter in Astro- and Particle Physics (DARK 2000)
SPRINGER-VERLAG BERLIN. 2001: 569–574
View details for Web of Science ID 000172440800051
-
Recent results from the Cryogenic Dark Matter Search for weakly interacting massive particles
4th International Symposium on Sources and Detection of Dark Matter and Dark Energy in the Universe
SPRINGER-VERLAG BERLIN. 2001: 322–332
View details for Web of Science ID 000169113700033
-
Multiplexed readout of superconducting bolometers
INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES
2000; 21 (12): 1909–16
View details for DOI 10.1023/A:1006752416612
View details for Web of Science ID 000165654100001
-
Microcalorimeter energy-dispersive spectrometry using a low voltage scanning electron microscope
JOURNAL OF MICROSCOPY-OXFORD
2000; 199: 37–44
View details for DOI 10.1046/j.1365-2818.2000.00705.x
View details for Web of Science ID 000087858000002
-
Microcalorimeter energy-dispersive spectrometry using a low voltage scanning electron microscope
Journal of microscopy
2000; 199 (Pt 1): 37-44
Abstract
We describe the current performance of the prototype microcalorimeter energy-dispersive spectrometer (&mgr;cal EDS) developed at NIST for X-ray microanalysis. We show that the low-energy &mgr;cal EDS, designed for operation in the energy range 0.2-2 keV, offers significant advantages for low-beam-energy microanalysis. We present several examples in which the prototype &mgr;cal EDS has been used to solve problems in low-voltage microanalysis, including the analysis of tungsten silicide (WSi2), titanium nitride (TiN) and barium titanate (BaTiO3) and the measurement of chemical shifts in Fe and C compounds.
View details for PubMedID 10886527
-
Exclusion limits on the WIMP-nucleon cross section from the Cryogenic Dark Matter Search
PHYSICAL REVIEW LETTERS
2000; 84 (25): 5699-5703
Abstract
The Cryogenic Dark Matter Search (CDMS) employs Ge and Si detectors to search for weakly interacting massive particles (WIMPs) via their elastic-scattering interactions with nuclei while discriminating against interactions of background particles. CDMS data, accounting for the neutron background, give limits on the spin-independent WIMP-nucleon elastic-scattering cross section that exclude unexplored parameter space above 10 GeV/c2 WIMP mass and, at >75% C.L., the entire 3sigma allowed region for the WIMP signal reported by the DAMA experiment.
View details for PubMedID 10991035
-
The approaching revolution in X-ray microanalysis: The microcalorimeter energy dispersive spectrometer
KLUWER ACADEMIC PUBL. 2000: 627–35
View details for DOI 10.1023/A:1006777606703
View details for Web of Science ID 000088410800028
-
Exclusion limits on the WIMP-nucleon scattering cross-section from the Cryogenic Dark Matter Search
8th International Workshop on Low-Temperature Detectors (LTD-8)
ELSEVIER SCIENCE BV. 2000: 345–49
View details for Web of Science ID 000086823400079
-
Superconducting transition-edge-microcalorimeter X-ray spectrometer with 2 eV energy resolution at 1.5 keV
ELSEVIER SCIENCE BV. 2000: 145–50
View details for DOI 10.1016/S0168-9002(99)01351-0
View details for Web of Science ID 000086823400034
-
Performance of multiplexed SQUID readout for Cryogenic Sensor Arrays
ELSEVIER SCIENCE BV. 2000: 107–10
View details for DOI 10.1016/S0168-9002(99)01339-X
View details for Web of Science ID 000086823400025
-
Calculation of T-c in a normal-superconductor bilayer using the microscopic-based Usadel theory
ELSEVIER SCIENCE BV. 2000: 23–27
View details for DOI 10.1016/S0168-9002(99)01320-0
View details for Web of Science ID 000086823400007
-
A Mo-Cu superconducting transition-edge microcalorimeter with 4.5 eV energy resolution at 6 keV
ELSEVIER SCIENCE BV. 2000: 184–87
View details for DOI 10.1016/S0168-9002(99)01354-6
View details for Web of Science ID 000086823400041
-
Superconducting bolometer arrays for submillimeter astronomy
ASTRONOMICAL SOC PACIFIC. 2000: 134–39
View details for Web of Science ID 000168121900031
-
A sounding rocket mission to study the solar soft X-ray and EUV emission using transition-edge sensor technology
Conference on X-Ray and Gamma-Ray Instrumentation for Astronomy IX
SPIE-INT SOCIETY OPTICAL ENGINEERING. 2000: 384–396
View details for Web of Science ID 000166723400038
-
Superconducting transition-edge bolometer arrays for ultra-low power radiometry
IEEE. 2000: 349–50
View details for DOI 10.1109/CPEM.2000.851019
View details for Web of Science ID 000089712400177
-
Microcalorimeter EDS for low voltage microanalysis
IOP PUBLISHING LTD. 2000: 125–26
View details for Web of Science ID 000166835400063
-
Development of arrays of TES X-ray detectors
SPIE-INT SOC OPTICAL ENGINEERING. 2000: 360–66
View details for DOI 10.1117/12.409130
View details for Web of Science ID 000166723400035
-
Quantum calorimetry
PHYSICS TODAY
1999; 52 (8): 32–37
View details for DOI 10.1063/1.882776
View details for Web of Science ID 000081779400009
-
Superconducting multiplexer for arrays of transition edge sensors
APPLIED PHYSICS LETTERS
1999; 74 (26): 4043–45
View details for DOI 10.1063/1.123255
View details for Web of Science ID 000080994200042
-
Superconducting transition-edge microcalorimeters for X-ray microanalysis
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 1999: 3177–81
View details for DOI 10.1109/77.783704
View details for Web of Science ID 000081964500084
-
Preliminary limits on the WIMP-nucleon cross section from the Cryogenic Dark Matter Search (CDMS)
5th International Workshop on Topics in Astroparticle and Underground Physics (TAUP 97)
ELSEVIER SCIENCE BV. 1999: 64–68
View details for Web of Science ID 000076059300008
-
Toward a 2-eV microcalorimeter x-ray spectrometer for Constellation-X
SPIE-INT SOC OPTICAL ENGINEERING. 1999: 82–93
View details for DOI 10.1117/12.366490
View details for Web of Science ID 000084180500009
-
Cryogenic microcalorimeters for x-ray microanalysis
NATL CONFERENCE STANDARDS LAB. 1999: 811–19
View details for Web of Science ID 000085623700102
-
Application of microcalorimeter EDS x-ray detectors to particle analysis
SOLID STATE PHENOMENA
1999; 65-6: 199–202
View details for DOI 10.4028/www.scientific.net/SSP.65-66.199
View details for Web of Science ID 000078232800049
-
Results and status of the Cryogenic Dark Matter Search (CDMS)
Workshop on Primordial Black Holes and Hawking Radiation/3rd International Symposium on Sources and Detection of Dark Matter in the Universe
ELSEVIER SCIENCE BV. 1998: 283–90
View details for Web of Science ID 000077937700034
-
Thermal-response time of superconducting transition-edge microcalorimeters
JOURNAL OF APPLIED PHYSICS
1998; 83 (8): 3978–85
View details for DOI 10.1063/1.367153
View details for Web of Science ID 000073273900004
-
Impact energy measurement in time-of-flight mass spectrometry with cryogenic microcalorimeters
NATURE
1998; 391 (6668): 672–75
Abstract
Time-of-flight mass spectrometry-most notably matrix-assisted laser-desorption-ionization time-of-flight (MALDI-TOF) spectrometry-is an important class of techniques for the study of proteins and other biomolecules. Although these techniques provide excellent performance for masses up to about 20,000 daltons, there has been limited success in achieving good mass resolution at higher masses. This is because the sensitivity of the microchannel plate (MCP) detectors used in most systems decreases rapidly with increasing particle mass, limiting the utility of MCP detectors for very large masses. It has recently been proposed that cryogenic particle detectors may provide a solution to these difficulties. Cryogenic detectors measure the thermal energy deposited by the particle impact, and thus have a sensitivity that is largely independent of particle mass. Recent experiments have demonstrated the sensitivity of cryogenic particle detectors to single biomolecules, a quantum efficiency several orders of magnitude larger than the MCP detectors, and sensitivity to masses as large as 750,000 daltons. Here we present results demonstrating an order of magnitude better energy resolution than previous measurements, allowing direct determination of particle charge state during acceleration. Although application of these detectors to practical mass spectrometry will require further development of the detectors and cryogenics, these detectors can be used to elucidate the performance-limiting processes that occur in such systems.
View details for PubMedID 9490410
-
Status and results from the cryogenic dark matter search (CDMS)
1st International Conference on Particle Physics Beyond the Standard Model
IOP PUBLISHING LTD. 1998: 781–785
View details for Web of Science ID 000081235100057
-
High-resolution microcalorimeter energy-dispersive spectrometer for x-ray microanalysis and particle analysis
AMER INST PHYSICS. 1998: 799–804
View details for Web of Science ID 000077770000112
-
Microcalorimeter EDS with 3 eV energy resolution
IOP PUBLISHING LTD. 1998: 573–74
View details for Web of Science ID 000077020300276
-
Silicon nitride micromesh bolometer arrays for SPIRE
SPIE-INT SOC OPTICAL ENGINEERING. 1998: 297–304
View details for DOI 10.1117/12.317365
View details for Web of Science ID 000075850400031
-
High-resolution, energy-dispersive microcalorimeter spectrometer for X-ray microanalysis
JOURNAL OF MICROSCOPY-OXFORD
1997; 188: 196–223
View details for DOI 10.1046/j.1365-2818.1997.2670824.x
View details for Web of Science ID 000071375100002
-
Technique for fabricating tungsten thin film sensors with T-c <=100 mK on germanium and silicon substrates
1996 Applied Superconductivity Conference
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 1997: 3367–70
View details for Web of Science ID A1997XH86700266
-
Progress of the cryogenic dark matter search (CDMS) experiment.
2nd Symposium on Dark Matter in the Universe
ELSEVIER SCIENCE BV. 1996: 318–322
View details for Web of Science ID A1996VY66500049
-
X-ray detection using a superconducting transition-edge sensor microcalorimeter with electrothermal feedback
APPLIED PHYSICS LETTERS
1996; 69 (13): 1945–47
View details for DOI 10.1063/1.117630
View details for Web of Science ID A1996VH79500042
-
A superconducting bolometer with strong electrothermal feedback
APPLIED PHYSICS LETTERS
1996; 69 (12): 1801-1803
View details for Web of Science ID A1996VG93400050
-
Advances in Stanford phonon-mediated elementary particle detectors
4th International Conference on Phonon Physics/8th International Conference on Phonon Scattering in Condensed Matter (PHONONS 95)
ELSEVIER SCIENCE BV. 1996: 744–747
View details for Web of Science ID A1996UL19600241
-
Installation of the Cryogenic Dark Matter Search (CDMS)
6th International Workshop on Low Temperature Detectors (LTD6)
ELSEVIER SCIENCE BV. 1996: 233–36
View details for Web of Science ID A1996UA32400079
-
SQUID based W-Al quasiparticle trapping assisted transition edge sensor
6th International Workshop on Low Temperature Detectors (LTD6)
ELSEVIER SCIENCE BV. 1996: 187–89
View details for Web of Science ID A1996UA32400062
-
A hot-electron microcalorimeter for X-ray detection using a superconducting transition edge sensor with electrothermal feedback
6th International Workshop on Low Temperature Detectors (LTD6)
ELSEVIER SCIENCE BV. 1996: 177–79
View details for Web of Science ID A1996UA32400059
-
A QUASI-PARTICLE-TRAP-ASSISTED TRANSITION-EDGE SENSOR FOR PHONON-MEDIATED PARTICLE-DETECTION
REVIEW OF SCIENTIFIC INSTRUMENTS
1995; 66 (11): 5322-5326
View details for Web of Science ID A1995TE62300034
-
A SELF-BIASING CRYOGENIC PARTICLE DETECTOR UTILIZING ELECTROTHERMAL FEEDBACK AND A SQUID READOUT
1994 Applied Superconductivity Conference
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 1995: 2690–93
View details for Web of Science ID A1995RP64000153
-
AN APPLICATION OF ELECTROTHERMAL FEEDBACK FOR HIGH-RESOLUTION CRYOGENIC PARTICLE-DETECTION
APPLIED PHYSICS LETTERS
1995; 66 (15): 1998-2000
View details for Web of Science ID A1995QR18900048
-
THE 1ST CRYOGENIC DARK-MATTER EXPERIMENT
5TH INTERNATIONAL WORKSHOP ON LOW TEMPERATURE DETECTORS ( LTD-5 )
SPRINGER/PLENUM PUBLISHERS. 1993: 791–96
View details for Web of Science ID A1993MK00200097
-
DESIGN OF KILOGRAM MASS SCALE TES FOR THE CRYOGENIC DARK-MATTER SEARCH
5TH INTERNATIONAL WORKSHOP ON LOW TEMPERATURE DETECTORS ( LTD-5 )
SPRINGER/PLENUM PUBLISHERS. 1993: 429–32
View details for Web of Science ID A1993MK00200039
-
QUANTUM EFFICIENT DETECTION OF PHONONS WITH TUNGSTEN THIN-FILMS
7th International Conference on Phonon Scattering in Condensed Matter
SPRINGER-VERLAG BERLIN. 1993: 486–487
View details for Web of Science ID A1993BB68D00189
-
A PILOT DARK-MATTER PARTICLE SEARCH EXPERIMENT
26TH INTERNATIONAL CONF ON HIGH ENERGY PHYSICS
AIP PRESS. 1993: 1260–1265
View details for Web of Science ID A1993BY68N00181
-
TUNGSTEN THIN-FILMS FOR USE IN CRYOGENIC PARTICLE DETECTORS
IVth International Workshop on Low Temperature Detectors for Neutrinos and Dark Matter (LTD-4)
EDITIONS FRONTIERES. 1992: 209–215
View details for Web of Science ID A1992BB01T00022
-
PHONON-MEDIATED DETECTORS FOR DARK MATTER SEARCHES AND NEUTRINO EXPERIMENTS
2ND INTERNATIONAL WORKSHOP ON THEORETICAL AND PHENOMENOLOGICAL ASPECTS OF UNDERGROUND PHYSICS ( TAUP 91 )
ELSEVIER SCIENCE BV. 1992: 449–461
View details for Web of Science ID A1992JZ40300072