Tor Raubenheimer
Professor of Particle Physics and Astrophysics
Web page: http://www.slac.stanford.edu/~tor
Academic Appointments
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Professor, Particle Physics and Astrophysics
2024-25 Courses
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Independent Studies (5)
- Curricular Practical Training
APPPHYS 291 (Aut, Win, Spr) - Directed Studies in Applied Physics
APPPHYS 290 (Aut, Win, Spr) - Independent Research and Study
PHYSICS 190 (Aut, Win, Spr) - Research
PHYSICS 490 (Aut, Win, Spr) - Senior Thesis Research
PHYSICS 205 (Aut, Win, Spr)
- Curricular Practical Training
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Prior Year Courses
2021-22 Courses
- Accelerators and Beams: Tools of Discovery and Innovation
PHYSICS 155 (Spr)
- Accelerators and Beams: Tools of Discovery and Innovation
All Publications
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Two-stage reflective self-seeding scheme for high-repetition-rate X-ray free-electron lasers.
Journal of synchrotron radiation
2021; 28 (Pt 1): 44–51
Abstract
X-ray free-electron lasers (XFELs) open a new era of X-ray based research by generating extremely intense X-ray flashes. To further improve the spectrum brightness, a self-seeding FEL scheme has been developed and demonstrated experimentally. As the next step, new-generation FELs with high repetition rates are being designed, built and commissioned around the world. A high repetition rate would significantly speed up the scientific research; however, alongside this improvement comes new challenges surrounding thermal management of the self-seeding monochromator. In this paper, a new configuration for self-seeding FELs is proposed, operated under a high repetition rate which can strongly suppress the thermal effects on the monochromator and provides a narrow-bandwidth FEL pulse. Three-dimension time-dependent simulations have been performed to demonstrate this idea. With this proposed configuration, high-repetition-rate XFEL facilities are able to generate narrow-bandwidth X-ray pulses without obvious thermal concern on the monochromators.
View details for DOI 10.1107/S1600577520014824
View details for PubMedID 33399551
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Coherence time characterization method for hard X-ray free-electron lasers
OPTICS EXPRESS
2020; 28 (8): 10928–38
View details for DOI 10.1364/OE.28.010928
View details for Web of Science ID 000526518300019
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Attosecond Coherence Time Characterization in Hard X-Ray Free-Electron Laser.
Scientific reports
2020; 10 (1): 5961
Abstract
One of the key challenges in scientific researches based on free-electron lasers (FELs) is the characterization of the coherence time of the ultra-fast hard x-ray pulse, which fundamentally influences the interaction process between x-rays and materials. Conventional optical methods, based on autocorrelation, are very difficult to realize due to the lack of mirrors. Here, we experimentally demonstrate a novel method which yields a coherence time of 174.7 attoseconds for the 6.92 keV FEL pulses at the Linac Coherent Light Source. In our experiment, a phase shifter is adopted to control the cross-correlation between x-ray and microbunched electrons. This approach provides critical diagnostics for the temporal coherence of x-ray FELs and is universal for general machine parameters; applicable for wide range of photon energy, radiation brightness, repetition rate and FEL pulse duration.
View details for DOI 10.1038/s41598-020-60328-4
View details for PubMedID 32249769
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Fluid dynamics analysis of a gas attenuator for X-ray FELs under high-repetition-rate operation
JOURNAL OF SYNCHROTRON RADIATION
2017; 24: 547-559
Abstract
Newtonian fluid dynamics simulations were performed using the Navier-Stokes-Fourier formulations to elucidate the short time-scale (µs and longer) evolution of the density and temperature distributions in an argon-gas-filled attenuator for an X-ray free-electron laser under high-repetition-rate operation. Both hydrodynamic motions of the gas molecules and thermal conductions were included in a finite-volume calculation. It was found that the hydrodynamic wave motions play the primary role in creating a density depression (also known as a filament) by advectively transporting gas particles away from the X-ray laser-gas interaction region, where large pressure and temperature gradients have been built upon the initial energy deposition via X-ray photoelectric absorption and subsequent thermalization. Concurrent outward heat conduction tends to reduce the pressure in the filament core region, generating a counter gas flow to backfill the filament, but on an initially slower time scale. If the inter-pulse separation is sufficiently short so the filament cannot recover, the depth of the filament progressively increases as the trailing pulses remove additional gas particles. Since the rate of hydrodynamic removal decreases while the rate of heat conduction back flow increases as time elapses, the two competing mechanisms ultimately reach a dynamic balance, establishing a repeating pattern for each pulse cycle. By performing simulations at higher repetition rates but lower per pulse energies while maintaining a constant time-averaged power, the amplitude of the hydrodynamic motion per pulse becomes smaller, and the evolution of the temperature and density distributions approach asymptotically towards, as expected, those calculated for a continuous-wave input of the equivalent power.
View details for DOI 10.1107/S1600577517005082
View details for PubMedID 28452745
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Multi-dimensional optimization of a terawatt seeded tapered Free Electron Laser with a Multi-Objective Genetic Algorithm
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
2017; 846: 56-63
View details for DOI 10.1016/j.nima.2016.11.035
View details for Web of Science ID 000394627500010
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Method to generate a pulse train of few-cycle coherent radiation
PHYSICAL REVIEW ACCELERATORS AND BEAMS
2016; 19 (9)
View details for DOI 10.1103/PhysRevAccelBeams.19.090701
View details for Web of Science ID 000383251300001
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Staging optics considerations for a plasma wakefield acceleration linear collider
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
2016; 829: 224-228
View details for DOI 10.1016/j.nima.2015.1.2.065
View details for Web of Science ID 000379144100046
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Echo-enabled harmonics up to the 75th order from precisely tailored electron beams
NATURE PHOTONICS
2016; 10 (8): 512-?
View details for DOI 10.1038/NPHOTON.2016.101
View details for Web of Science ID 000386709000007
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Two-photon photoemission from a copper cathode in an X-band photoinjector
PHYSICAL REVIEW ACCELERATORS AND BEAMS
2016; 19 (2)
View details for DOI 10.1103/PhysRevAccelBeams.19.023401
View details for Web of Science ID 000379341400002
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Filamentation effect in a gas attenuator for high-repetition-rate X-ray FELs
JOURNAL OF SYNCHROTRON RADIATION
2016; 23: 21-28
Abstract
A sustained filamentation or density depression phenomenon in an argon gas attenuator servicing a high-repetition femtosecond X-ray free-electron laser has been studied using a finite-difference method applied to the thermal diffusion equation for an ideal gas. A steady-state solution was obtained by assuming continuous-wave input of an equivalent time-averaged beam power and that the pressure of the entire gas volume has reached equilibrium. Both radial and axial temperature/density gradients were found and describable as filamentation or density depression previously reported for a femtosecond optical laser of similar attributes. The effect exhibits complex dependence on the input power, the desired attenuation, and the geometries of the beam and the attenuator. Time-dependent simulations were carried out to further elucidate the evolution of the temperature/density gradients in between pulses, from which the actual attenuation received by any given pulse can be properly calculated.
View details for DOI 10.1107/S1600577515018408
View details for Web of Science ID 000367548900004
View details for PubMedID 26698041
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Measurements and analysis of a high-brightness electron beam collimated in a magnetic bunch compressor
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2015; 18 (5)
View details for DOI 10.1103/PhysRevSTAB.18.050702
View details for Web of Science ID 000354974500002
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X-band rf driven free electron laser driver with optics linearization
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2014; 17 (11)
View details for DOI 10.1103/PhysRevSTAB.17.110703
View details for Web of Science ID 000348770000001
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Femtosecond Visualization of Laser-Induced Optical Relativistic Electron Microbunches
PHYSICAL REVIEW LETTERS
2014; 113 (18)
Abstract
It has long been known that lasers can interact with relativistic electrons in magnetic undulators to imprint sinusoidal modulations that can be used to slice electrons into microbunches equally separated at the laser wavelength. Here we report on the first direct measurement of laser-induced microbunching of a relativistic electron beam with femtosecond resolution in the time domain. Using a modified zero-phasing technique to map the electron beam's temporal structures into the energy space, we show that this method can be used to directly quantify the time and spectral content of coherent current modulations imprinted on the beam for harmonic and multicolor lasing applications in accelerator-based light sources.
View details for DOI 10.1103/PhysRevLett.113.184802
View details for Web of Science ID 000347693800008
View details for PubMedID 25396374
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First Characterization of Coherent Optical Vortices from Harmonic Undulator Radiation
PHYSICAL REVIEW LETTERS
2014; 113 (13)
View details for DOI 10.1103/PhysRevLett.113.134803
View details for Web of Science ID 000342154100006
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First Characterization of Coherent Optical Vortices from Harmonic Undulator Radiation
PHYSICAL REVIEW LETTERS
2014; 113 (13)
Abstract
We describe the experimental generation and measurement of coherent light that carries orbital angular momentum from a relativistic electron beam radiating at the second harmonic of a helical undulator. The measured helical phase of the light is shown to be in agreement with predictions of the sign and magnitude of the phase singularity and is more than 2 orders of magnitude greater than the incoherent signal. Our setup demonstrates that such optical vortices can be produced in modern free-electron lasers in a simple afterburner arrangement for novel two-mode pump-probe experiments.
View details for DOI 10.1103/PhysRevLett.113.134803
View details for Web of Science ID 000344051400004
View details for PubMedID 25302894
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Highly coherent vacuum ultraviolet radiation at the 15th harmonic with echo-enabled harmonic generation technique
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2014; 17 (7)
View details for DOI 10.1103/PhysRevSTAB.17.070702
View details for Web of Science ID 000355561300001
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Direct observation of fine-scale energy banding in echo-enabled harmonic generation
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2014; 17 (1)
View details for DOI 10.1103/PhysRevSTAB.17.010703
View details for Web of Science ID 000332174700001
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Demonstration of harmonic interaction in an undulator up to the 15th order
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2013; 16 (11)
View details for DOI 10.1103/PhysRevSTAB.16.110701
View details for Web of Science ID 000326888400001
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Beam ion instability: Measurement, analysis, and simulation
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2013; 16 (10)
View details for DOI 10.1103/PhysRevSTAB.16.104402
View details for Web of Science ID 000325357400002
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Demonstration of Cascaded Optical Inverse Free-Electron Laser Accelerator
PHYSICAL REVIEW LETTERS
2013; 110 (24)
Abstract
We report on a proof-of-principle demonstration of a two-stage cascaded optical inverse free-electron laser (IFEL) accelerator in which an electron beam is accelerated by a strong laser pulse after being packed into optical microbunches by a weaker initial laser pulse. We show experimentally that injection of precisely prepared optical microbunches into an IFEL allows net acceleration or deceleration of the beam, depending on the relative phase of the two laser pulses. The experimental results are in excellent agreement with simulation. The demonstrated technique holds great promise to significantly improve the beam quality of IFELs and may have a strong impact on emerging laser accelerators driven by high-power optical lasers.
View details for DOI 10.1103/PhysRevLett.110.244801
View details for Web of Science ID 000320282600007
View details for PubMedID 25165931
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Modeling and design of an X-band rf photoinjector
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2012; 15 (10)
View details for DOI 10.1103/PhysRevSTAB.15.102001
View details for Web of Science ID 000309815200001
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Generating periodic terahertz structures in a relativistic electron beam through frequency down-conversion of optical lasers
PHYSICAL REVIEW LETTERS
2012; 109 (7)
Abstract
We report generation of density modulation at terahertz (THz) frequencies in a relativistic electron beam through laser modulation of the beam longitudinal phase space. We show that by modulating the energy distribution of the beam with two lasers, density modulation at the difference frequency of the two lasers can be generated after the beam passes through a chicane. In this experiment, density modulation around 10 THz was generated by down-converting the frequencies of an 800 nm laser and a 1550 nm laser. The central frequency of the density modulation can be tuned by varying the laser wavelengths, beam energy chirp, or momentum compaction of the chicane. This technique can be applied to accelerator-based light sources for generation of coherent THz radiation and marks a significant advance toward tunable narrow band THz sources.
View details for DOI 10.1103/PhysRevLett.109.074801
View details for Web of Science ID 000307709400024
View details for PubMedID 23006375
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Mode-locked multichromatic x rays in a seeded free-electron laser for single-shot x-ray spectroscopy
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2012; 15 (5)
View details for DOI 10.1103/PhysRevSTAB.15.050707
View details for Web of Science ID 000304063200001
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Low-charge, hard x-ray free electron laser driven with an X-band injector and accelerator
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2012; 15 (3)
View details for DOI 10.1103/PhysRevSTAB.15.030703
View details for Web of Science ID 000301347200003
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Evidence of High Harmonics from Echo-Enabled Harmonic Generation for Seeding X-Ray Free Electron Lasers
PHYSICAL REVIEW LETTERS
2012; 108 (2)
Abstract
Echo-enabled harmonic generation free electron lasers hold great promise for the generation of fully coherent radiation in x-ray wavelengths. Here we report the first evidence of high harmonics from the echo-enabled harmonic generation technique in the realistic scenario where the laser energy modulation is comparable to the beam slice energy spread. In this experiment, coherent radiation at the seventh harmonic of the second seed laser is generated when the energy modulation amplitude is about 2-3 times the slice energy spread. The experiment confirms the underlying physics of echo-enabled harmonic generation and may have a strong impact on emerging seeded x-ray free electron lasers that are capable of generating laserlike x rays which will advance many areas of science.
View details for DOI 10.1103/PhysRevLett.108.024802
View details for Web of Science ID 000298991400012
View details for PubMedID 22324690
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VELOCIRAPTOR: An X-band photoinjector and linear accelerator for the production of Mono-Energetic gamma-rays
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
2011; 657 (1): 140-149
View details for DOI 10.1016/j.nima.2011.06.106
View details for Web of Science ID 000297085800023
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All-optical time-resolved measurement of laser energy modulation in a relativistic electron beam
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2011; 14 (11)
View details for DOI 10.1103/PhysRevSTAB.14.112801
View details for Web of Science ID 000297298400002
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Demonstration of the Echo-Enabled Harmonic Generation Technique for Short-Wavelength Seeded Free Electron Lasers
PHYSICAL REVIEW LETTERS
2010; 105 (11)
Abstract
We report the first experimental demonstration of the echo-enabled harmonic generation technique, which holds great promise for generation of high-power, fully coherent short-wavelength radiation. In this experiment, coherent radiation at the 3rd and 4th harmonics of the second seed laser is generated from the so-called beam echo effect. The experiment confirms the physics behind this technique and paves the way for applying the echo-enabled harmonic generation technique for seeded x-ray free electron lasers.
View details for DOI 10.1103/PhysRevLett.105.114801
View details for Web of Science ID 000281652700007
View details for PubMedID 20867575
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Observation of magnetic resonances in electron clouds in a positron storage ring
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
2010; 621 (1-3): 33-38
View details for DOI 10.1016/j.nima.2010.04.052
View details for Web of Science ID 000281109100003
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Experimental observations of in situ secondary electron yield reduction in the PEP-II particle accelerator beam line
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
2010; 621 (1-3): 47-56
View details for DOI 10.1016/j.nima.2010.04.059
View details for Web of Science ID 000281109100005
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Plasma wakefield acceleration experiments at FACET
NEW JOURNAL OF PHYSICS
2010; 12
View details for DOI 10.1088/1367-2630/12/5/055030
View details for Web of Science ID 000278634100025
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Present status and first results of the final focus beam line at the KEK Accelerator Test Facility
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2010; 13 (4)
View details for DOI 10.1103/PhysRevSTAB.13.042801
View details for Web of Science ID 000278150700009
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Sharp reduction of the secondary electron emission yield from grooved surfaces
JOURNAL OF APPLIED PHYSICS
2008; 104 (10)
View details for DOI 10.1063/1.3021149
View details for Web of Science ID 000262605800151
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Direct measurement of the transverse wakefields of tapered collimators
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2007; 10 (3)
View details for DOI 10.1103/PhysRevSTAB.10.034401
View details for Web of Science ID 000245810500014
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Suppression of secondary emission in a magnetic field using triangular and rectangular surfaces
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
2007; 571 (3): 588-598
View details for DOI 10.1016/j.nima.2006.11.039
View details for Web of Science ID 000244576000006
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Secondary electron yield and groove chamber tests in PEP-II
2007 IEEE PARTICLE ACCELERATOR CONFERENCE, VOLS 1-11
2007: 3739-3741
View details for Web of Science ID 000255096304163
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Design of the beam delivery system for the international linear collider
2007 IEEE PARTICLE ACCELERATOR CONFERENCE, VOLS 1-11
2007: 3773-3775
View details for Web of Science ID 000255096304174
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Suppression of secondary electron emission using triangular grooved surface in the ILC dipole and wiggler magnets
2007 IEEE PARTICLE ACCELERATOR CONFERENCE, VOLS 1-11
2007: 532-534
View details for Web of Science ID 000255096300178
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Luminosity, energy and polarization studies for the Linear Collider: Comparing e(+)e(-) and e(-)e(-) for NLC and TESLA
5th International Workshop on Electron-Electron Interactions at TeV Energies
WORLD SCIENTIFIC PUBL CO PTE LTD. 2005: 7433–49
View details for Web of Science ID 000234727900016
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Dark currents and their effect on the primary beam in an X-band linac
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2005; 8 (6)
View details for DOI 10.1103/PhysRevSTAB.8.064401
View details for Web of Science ID 000230385600014
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Electron-cloud effects in transport lines of a normal conducting linear collider
21st Particle Accelerator Conference (PAC)
IEEE. 2005: 2242–2244
View details for Web of Science ID 000235745202020
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Luminosity loss due to beam distortion and the beam-beam instability
21st Particle Accelerator Conference (PAC)
IEEE. 2005: 318–320
View details for Web of Science ID 000235745200100
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Multi-stage bunch compressors for the International Linear Collider
2005 IEEE PARTICLE ACCELERATOR CONFERENCE (PAC), VOLS 1-4
2005: 2236-2238
View details for Web of Science ID 000235745202018
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Single-bunch instability driven by the electron cloud effect in the positron damping ring of the International Linear Collider
2005 IEEE PARTICLE ACCELERATOR CONFERENCE (PAC), VOLS 1-4
2005: 2257-2259
View details for Web of Science ID 000235745202025
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Proposal of the next incarnation of accelerator test facility at KEK for the international linear collider
2005 IEEE PARTICLE ACCELERATOR CONFERENCE (PAC), VOLS 1-4
2005: 2167-2169
View details for Web of Science ID 000235745201344
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Luminosity optimization with offset, crossing angle, and distortion
21st Particle Accelerator Conference (PAC)
IEEE. 2005: 315–317
View details for Web of Science ID 000235745200099
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A test facility for the International Linear Collider, at SLAC end station A for prototypes of Beam Delivery and IR components
21st Particle Accelerator Conference (PAC)
IEEE. 2005: 2239–2241
View details for Web of Science ID 000235745202019
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Suppressing electron cloud in future linear colliders
2005 IEEE PARTICLE ACCELERATOR CONFERENCE (PAC), VOLS 1-4
2005: 1367-1371
View details for Web of Science ID 000235745201082
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An afterburner at the ILC: The collider viewpoint
ADVANCED ACCELERATOR CONCEPTS
2004; 737: 86-94
View details for Web of Science ID 000226549000006
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Impact of the wiggler coherent synchrotron radiation impedance on the beam instability and damping ring optimization
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2003; 6 (10)
View details for DOI 10.1103/PhysRevSTAB.6.104404
View details for Web of Science ID 000186428800010
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Beam dynamics of the interaction region solenoid in a linear collider due to a crossing angle
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2003; 6 (6)
View details for DOI 10.1103/PhysRevSTAB.6.061001
View details for Web of Science ID 000184204400001
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Calculation of the coherent synchrotron radiation impedance from a wiggler
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
2003; 6 (4)
View details for DOI 10.1103/PhysRevSTAB.6.040701
View details for Web of Science ID 000182931200002
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Calculation of the coherent synchrotron radiation impedance from a wiggler
20th Biennial Particle Accelerator Conference
IEEE. 2003: 1038–1040
View details for Web of Science ID 000189498600298
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Comparison of the TESLA, NLC and CLIC beam-collimation system performance
29th ICFA Advanced Beam Dynamics Workshop on Beam Halo Dynamics, Diagnostics, and Collimation held in Conjunction with Workshop on Beam-Beam Interactions
AMER INST PHYSICS. 2003: 200–204
View details for Web of Science ID 000189346800045
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A lattice with larger momentum compaction for the NLC main damping rings
20th Biennial Particle Accelerator Conference
IEEE. 2003: 2775–2777
View details for Web of Science ID 000189498600882
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Recent electron-cloud simulation results for the Main Damping Rings of the NLC and TESLA linear colliders
20th Biennial Particle Accelerator Conference
IEEE. 2003: 3219–3221
View details for Web of Science ID 000189498601032
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Effects of dynamic misalignments and feedback performance on luminosity stability in linear colliders
20th Biennial Particle Accelerator Conference
IEEE. 2003: 662–664
View details for Web of Science ID 000189498600176
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Optimized wakefield suppression & emittance dilution-imposed alignment tolerances in X-band accelerating structures for the JLC/NLC
20th Biennial Particle Accelerator Conference
IEEE. 2003: 2760–2762
View details for Web of Science ID 000189498600877
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Implementation of dynamic misalignments and luminosity stabilization
20th Biennial Particle Accelerator Conference
IEEE. 2003: 2757–2759
View details for Web of Science ID 000189498600876
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A test of NLC-type beam loading in the SLAC linac
20th Biennial Particle Accelerator Conference
IEEE. 2003: 2754–2756
View details for Web of Science ID 000189498600875
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Comparison of the TESLA, NLC and CLIC beam-collimation system performance
20th Biennial Particle Accelerator Conference
IEEE. 2003: 2739–2741
View details for Web of Science ID 000189498600870
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Impact of the wiggler coherent synchrotron radiation impedance on the beam instability
20th Biennial Particle Accelerator Conference
IEEE. 2003: 3231–3233
View details for Web of Science ID 000189498601036
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Extremely low vertical-emittance beam in the accelerator test facility at KEK
PHYSICAL REVIEW LETTERS
2002; 88 (19)
Abstract
Electron beams with the lowest, normalized transverse emittance recorded so far were produced and confirmed in single-bunch-mode operation of the Accelerator Test Facility at KEK. We established a tuning method of the damping ring which achieves a small vertical dispersion and small x-y orbit coupling. The vertical emittance was less than 1% of the horizontal emittance. At the zero-intensity limit, the vertical normalized emittance was less than 2.8 x 10(-8) rad m at beam energy 1.3 GeV. At high intensity, strong effects of intrabeam scattering were observed, which had been expected in view of the extremely high particle density due to the small transverse emittance.
View details for DOI 10.1103/PhysRevLett.88.194801
View details for Web of Science ID 000175324900020
View details for PubMedID 12005637
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Progress with the JLC/NLC X-band linear collider design
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
2001; 16: 1193-1196
View details for Web of Science ID 000173465600090
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Progress in the next linear collider design
Workshop on Physics and Detectors for Future Linear e(plus) e(minus) Colliders
AMER INST PHYSICS. 2001: 53–64
View details for Web of Science ID 000176630600004
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Evaluation of vertical emittance in KEK-ATF by utilizing lifetime measurement
International Symposium on New Visions in Laser-Beam Interactions
ELSEVIER SCIENCE BV. 2000: 207–12
View details for Web of Science ID 000165514400037
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Emittance growth during bunch compression in the CTF-II
PHYSICAL REVIEW LETTERS
2000; 84 (4): 658-661
Abstract
Measurements of the beam emittance during bunch compression in the CLIC Test Facility (CTF-II) are described. The measurements were made with different beam charges and different energy correlations versus the bunch compressor settings which were varied from no compression through the point of full compression and to overcompression. Significant increases in the beam emittance were observed with the maximum emittance occurring near the point of full (maximal) compression. Finally, evaluation of possible emittance dilution mechanisms indicates that coherent synchrotron radiation was the most likely cause.
View details for Web of Science ID 000084891700020
View details for PubMedID 11017340
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Final-focus systems in linear colliders
REVIEWS OF MODERN PHYSICS
2000; 72 (1): 95-107
View details for Web of Science ID 000085753700004
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Scaling laws for e(+)/e(-) linear colliders
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
1999; 421 (3): 369-405
View details for Web of Science ID 000078285700001
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Feedback systems for linear colliders
Workshop on Automated Beam Steering and Shaping (ABS)
C E R N. 1999: 127–27
View details for Web of Science ID 000083968900037
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Nonlinear resonant collimation for future linear colliders
16th ICFA Beam Dynamics Workshop on Nonlinear and Collective Phenomena in Beam Physics
AIP PRESS. 1999: 143–156
View details for Web of Science ID 000080238200012
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Proposal for a one GeV plasma wakefield acceleration experiment at SLAC
13th Advanced ICFA Beam Dynamics Workshop / 1st ICFA Novel and Advanced Accelerator Workshop - The 2nd Generation Plasma Accelerators
ELSEVIER SCIENCE BV. 1998: 396–406
View details for Web of Science ID 000074835700012
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A 30 GHz 5-TeV linear collider
PROCEEDINGS OF THE 1997 PARTICLE ACCELERATOR CONFERENCE, VOLS 1-3
1998: 482-484
View details for Web of Science ID 000079582800150
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Emittance dilution in 1 and 5 TeV 30 GHz linear colliders
PROCEEDINGS OF THE 1997 PARTICLE ACCELERATOR CONFERENCE, VOLS 1-3
1998: 473-475
View details for Web of Science ID 000079582800147
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First observations of a ''fast beam-ion instability''
PHYSICAL REVIEW LETTERS
1997; 79 (1): 79-82
View details for Web of Science ID A1997XH87000020
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Longitudinal space charge in final-focus systems for linear colliders
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
1997; 390 (3): 279-285
View details for Web of Science ID A1997XJ49700001
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Beam dynamics in plasma accelerators
Workshop on Nonlinear and Collective Phenomena in Beam Physics
AIP PRESS. 1997: 75–86
View details for Web of Science ID A1997BJ69R00007
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Ion instability experiments on the ALS
Workshop on Nonlinear and Collective Phenomena in Beam Physics
AIP PRESS. 1997: 175–90
View details for Web of Science ID A1997BJ69R00017
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Report of the working group on plasma phenomena in beams
Workshop on Nonlinear and Collective Phenomena in Beam Physics
AIP PRESS. 1997: 23–29
View details for Web of Science ID A1997BJ69R00004
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Plasma possibilities in the NLC
Workshop on Nonlinear and Collective Phenomena in Beam Physics
AIP PRESS. 1997: 265–73
View details for Web of Science ID A1997BJ69R00024
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Research and development toward a 4.5-1.5 angstrom linac coherent light source (LCLS) at SLAC
17th International Free Electron Laser Conference
ELSEVIER SCIENCE BV. 1996: 274–83
View details for Web of Science ID A1996UV58900070
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A technique of measuring and correcting emittance dilutions due to accelerator structure misalignments
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
1996; 370 (2-3): 303-311
View details for Web of Science ID A1996UC92000003
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A damping ring design for the SLAC next linear collider
16th Biennial Particle Accelerator Conference
IEEE. 1996: 701–703
View details for Web of Science ID A1996BF76A00209
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High-intensity single bunch instability behavior in the new SLC damping ring vacuum chamber
16th Biennial Particle Accelerator Conference
IEEE. 1996: 3109–3111
View details for Web of Science ID A1996BF76A00995
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Beam distribution function after filamentation
16th Biennial Particle Accelerator Conference
IEEE. 1996: 3291–3293
View details for Web of Science ID A1996BF76A01053
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Alignment tolerance of accelerating structures and corrections for future linear colliders
16th Biennial Particle Accelerator Conference
IEEE. 1996: 3112–3114
View details for Web of Science ID A1996BF76A00996
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Emittance and trajectory control in the main linacs of the NLC
XVIII International Linear Accelerator Conference
C E R N. 1996: 470–72
View details for Web of Science ID A1996BH13T00140
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Summary of the linac working group
Micro Bunches Workshop
AIP PRESS. 1996: 94–106
View details for Web of Science ID A1996BF35Z00010
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SLC status and NLC design and R&D
XVIII International Linear Accelerator Conference
C E R N. 1996: 270–74
View details for Web of Science ID A1996BH13T00082
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LIAR - A new program for the modelling and simulation of linear accelerators with high gradients and small emittances
XVIII International Linear Accelerator Conference
C E R N. 1996: 464–66
View details for Web of Science ID A1996BH13T00138
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SLC-2000: A luminosity upgrade for the SLC
XVIII International Linear Accelerator Conference
C E R N. 1996: 323–25
View details for Web of Science ID A1996BH13T00091
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A bunch compressor for the next linear collider
16th Biennial Particle Accelerator Conference
IEEE. 1996: 704–706
View details for Web of Science ID A1996BF76A00210
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A fast beam-ion instability
16th Biennial Particle Accelerator Conference
IEEE. 1996: 3102–3104
View details for Web of Science ID A1996BF76A00993
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Emittance dilution due to slow alignment drifts in the main linacs of the NLC
XVIII International Linear Accelerator Conference
C E R N. 1996: 467–69
View details for Web of Science ID A1996BH13T00139
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Collective effects in the NLC damping ring designs
16th Biennial Particle Accelerator Conference
IEEE. 1996: 2986–2988
View details for Web of Science ID A1996BF76A00954
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Direct measurement of transverse wakefields in the SLC linac
16th Biennial Particle Accelerator Conference
IEEE. 1996: 659–661
View details for Web of Science ID A1996BF76A00195
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Compensation of longitudinal nonlinearities in the NLC bunch compressor
Micro Bunches Workshop
AIP PRESS. 1996: 84–93
View details for Web of Science ID A1996BF35Z00009
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Ion effects in future circular and linear accelerators
16th Biennial Particle Accelerator Conference
IEEE. 1996: 2752–2756
View details for Web of Science ID A1996BF76A00878
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Parameters of the SLAC next linear collider
16th Biennial Particle Accelerator Conference
IEEE. 1996: 698–700
View details for Web of Science ID A1996BF76A00208
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Emittance and energy control in the NLC main linacs
16th Biennial Particle Accelerator Conference
IEEE. 1996: 2989–2991
View details for Web of Science ID A1996BF76A00955
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Long-range wakefields and split-tune lattice at the SLC
XVIII International Linear Accelerator Conference
C E R N. 1996: 140–42
View details for Web of Science ID A1996BH13T00039
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FAST BEAM-ION INSTABILITY .1. LINEAR-THEORY AND SIMULATIONS
PHYSICAL REVIEW E
1995; 52 (5): 5487-5498
View details for Web of Science ID A1995TG33700044
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FAST BEAM-ION INSTABILITY .2. EFFECT OF ION DECOHERENCE
PHYSICAL REVIEW E
1995; 52 (5): 5499-5504
View details for Web of Science ID A1995TG33700045
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ELECTRON-BEAM ACCELERATION AND COMPRESSION FOR SHORT-WAVELENGTH FELS
16th International Free Electron Laser Conference
ELSEVIER SCIENCE BV. 1995: 40–43
View details for Web of Science ID A1995QR44300013
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EMITTANCE GROWTH OF BUNCHED BEAMS IN BENDS
PHYSICAL REVIEW E
1995; 51 (2): 1453-1470
View details for Web of Science ID A1995QH06900074
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SHORT-WAVELENGTH FELS USING THE SLAC LINAC
8th National Conference on Synchrotron Radiation Instrumentation
ELSEVIER SCIENCE BV. 1994: 199–205
View details for Web of Science ID A1994PD42900035
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THE SLAC SOFT-X-RAY HIGH-POWER FEL
15th International Free Electron Laser Conference
ELSEVIER SCIENCE BV. 1994: 326–30
View details for Web of Science ID A1994NA78800072
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Prospects for high power linac coherent light source (LCLS) development in the 1000 angstrom-1 angstrom wavelength range
4th International Colloquium on X-Ray Lasers
AIP PRESS. 1994: 320–29
View details for Web of Science ID A1994BD37L00057
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THE CORE EMITTANCE WITH INTRABEAM SCATTERING IN E(+)E(-) RINGS
PARTICLE ACCELERATORS
1994; 45 (2-3): 111-118
View details for Web of Science ID A1994QC94200003
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THE VERTICAL EMITTANCE IN THE ATF DAMPING RING
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
1993; 335 (1-2): 1-10
View details for Web of Science ID A1993MB43400001
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A 2 TO 4NM HIGH-POWER FEL ON THE SLAC LINAC
14TH INTERNATIONAL CONF ON FREE ELECTRON LASER ( FEL 92 )
ELSEVIER SCIENCE BV. 1993: 223–27
View details for Web of Science ID A1993LK37800045
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A POSSIBLE REDESIGN OF THE SLAC SLC DAMPING RINGS
1993 Particle Accelerator Conference
I E E E. 1993: 2025–2027
View details for Web of Science ID A1993BA40R00667
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THE PRESERVATION OF LOW-EMITTANCE FLAT BEAMS
1993 Particle Accelerator Conference
I E E E. 1993: 11–15
View details for Web of Science ID A1993BA40R00003
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CHICANE AND WIGGLER BASED BUNCH COMPRESSORS FOR FUTURE LINEAR COLLIDERS
1993 Particle Accelerator Conference
I E E E. 1993: 635–637
View details for Web of Science ID A1993BA40R00209
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METHOD TO EVALUATE STEERING AND ALIGNMENT ALGORITHMS FOR CONTROLLING EMITTANCE GROWTH
1993 Particle Accelerator Conference
I E E E. 1993: 417–419
View details for Web of Science ID A1993BA40R00138
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ELECTRON-TRANSPORT OF A LINAC COHERENT-LIGHT SOURCE (LCLS) USING THE SLAC LINAC
1993 Particle Accelerator Conference
I E E E. 1993: 596–598
View details for Web of Science ID A1993BA40R00196
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COMPUTER STUDIES OF A COMBINED-FUNCTION BEND MAGNET FOR A PROPOSED REDESIGN OF THE SLAC SLC DAMPING RINGS
1993 Particle Accelerator Conference
I E E E. 1993: 2880–2882
View details for Web of Science ID A1993BA40R00948
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A 2-4 NM LINAC COHERENT-LIGHT SOURCE (LCLS) USING THE SLAC LINAC
1993 Particle Accelerator Conference
I E E E. 1993: 1445–1447
View details for Web of Science ID A1993BA40R00478
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FLAT BEAMS IN THE SLC
1993 Particle Accelerator Conference
I E E E. 1993: 2019–2021
View details for Web of Science ID A1993BA40R00665
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LINAC COHERENT-LIGHT SOURCE (LCLS) AT 2-4 NM USING THE SLAC LINAC
Conference on Electron-Beam Sources of High-Brightness Radiation
SPIE - INT SOC OPTICAL ENGINEERING. 1993: 116–125
View details for Web of Science ID A1993BZ78A00012
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CALCULATIONS OF EMITTANCE AND DAMPING TIME EFFECTS IN THE SLC DAMPING RINGS
3rd European Particle Accelerator Conference
EDITIONS FRONTIERES. 1992: 682–684
View details for Web of Science ID A1992BB05F00176
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MEASURED EMITTANCE VERSUS STORE TIME IN THE SLC DAMPING RING
3rd European Particle Accelerator Conference
EDITIONS FRONTIERES. 1992: 342–344
View details for Web of Science ID A1992BB05F00079
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A NEW TECHNIQUE OF CORRECTING EMITTANCE DILUTIONS IN LINEAR COLLIDERS
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
1991; 306 (1-2): 61-64
View details for Web of Science ID A1991GC01700008
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A DISPERSION-FREE TRAJECTORY CORRECTION TECHNIQUE FOR LINEAR COLLIDERS
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
1991; 302 (2): 191-208
View details for Web of Science ID A1991FN89900001
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A NEW METHOD OF CORRECTING THE TRAJECTORY IN LINACS
14TH BIENNIAL PARTICLE ACCELERATOR CONF : ACCELERATOR SCIENCE AND TECHNOLOGY
I E E E. 1991: 2503–2505
View details for Web of Science ID A1991BV39S00819
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A NEW TRAJECTORY CORRECTION TECHNIQUE FOR LINACS
2ND EUROPEAN PARTICLE ACCELERATOR CONF AND THE MEDICAL SATELLITE MEETING
EDITIONS FRONTIERES. 1990: 1405–1407
View details for Web of Science ID A1990BT19N00414
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ANALYTIC ESTIMATES OF COUPLING IN DAMPING RINGS
IEEE PARTICLE ACCELERATOR CONF : ACCELERATOR SCIENCE AND TECHNOLOGY
I E E E. 1989: 1435–1437
View details for Web of Science ID A1989BQ56Q00461
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A DAMPING RING DESIGN FOR FUTURE LINEAR COLLIDERS
IEEE PARTICLE ACCELERATOR CONF : ACCELERATOR SCIENCE AND TECHNOLOGY
I E E E. 1989: 1316–1318
View details for Web of Science ID A1989BQ56Q00422
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SUPERCONVERGENT TRACKING AND INVARIANT SURFACES IN PHASE-SPACE
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
1985; 32 (5): 2206-2208
View details for Web of Science ID A1985G933200207
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A DIAGNOSTIC FOR DYNAMIC APERTURE
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
1985; 32 (5): 2291-2293
View details for Web of Science ID A1985G933200235