River R Robles

All Publications

• Experimental Generation of Extreme Electron Beams for Advanced Accelerator Applications. Physical review letters Emma, C., Majernik, N., Swanson, K. K., Ariniello, R., Gessner, S., Hessami, R., Hogan, M. J., Knetsch, A., Larsen, K. A., Marinelli, A., O'Shea, B., Perez, S., Rajkovic, I., Robles, R., Storey, D., Yocky, G. 2025; 134 (8): 085001

  Abstract

  In this Letter, we report on the experimental generation of high energy (10GeV), ultrashort (femtosecond-duration), ultrahigh current (0.1MA), petawatt peak power electron beams in a particle accelerator. These extreme beams enable the exploration of a new frontier of high-intensity beam-light and beam-matter interactions broadly relevant across fields ranging from laboratory astrophysics to strong field quantum electrodynamics and ultrafast quantum chemistry. We demonstrate our ability to generate and control the properties of these electron beams by means of a laser-electron beam shaping technique. This experimental demonstration opens the door to on-the-fly customization of extreme beam current profiles for desired experiments and is poised to benefit a broad swath of cross-cutting applications of relativistic electron beams.

  View details for DOI 10.1103/PhysRevLett.134.085001

  View details for PubMedID 40085855

• Probing Electronic Coherence between Core-Level Vacancies at Different Atomic Sites PHYSICAL REVIEW X Wang, J., Driver, T. 2025; 15: 011008

  View details for DOI 10.1103/PhysRevX.15.011008

• "Beam à la carte": Laser heater shaping for attosecond pulses in a multiplexed x-ray free-electron laser APPLIED PHYSICS LETTERS Li, S., Zhang, Z., Alverson, S., Cesar, D., Driver, T., Franz, P., Isele, E., Duris, J. P., Larsen, K., Lin, M., Obaid, R., O'Neal, J. T., Robles, R., Sudar, N., Guo, Z., Vetter, S., Walter, P., Wang, A. L., Xu, J., Carbajo, S., Cryan, J. P., Marinelli, A. 2024; 125 (19)

  View details for DOI 10.1063/5.0233468

  View details for Web of Science ID 001349444700011

• Three-dimensional theory of superradiant free-electron lasers PHYSICAL REVIEW RESEARCH Robles, R. R., Giannessi, L., Marinelli, A. 2024; 6 (3)

  View details for DOI 10.1103/PhysRevResearch.6.033158

  View details for Web of Science ID 001293190500004

• Wavelength scaling and multicolor operation of a plasma-driven attosecond x-ray source via harmonic generation PHYSICAL REVIEW ACCELERATORS AND BEAMS Hessami, R., Morgan, J., Robles, R., Larsen, K. A., Marinelli, A., Emma, C. 2024; 27 (7)

  View details for DOI 10.1103/PhysRevAccelBeams.27.070701

  View details for Web of Science ID 001267443100001

• Characterization of a HPHT boron ion-implanted diamond X-ray mirror following high vacuum annealing DIAMOND AND RELATED MATERIALS Margraf-O'Neal, R. A., Ynsa, M. D., Krzywinski, J., Ng, M. L., Macarthur, J. P., Ke, F., Zhong, Y., Mo, S., Pradhan, P., Robles, R., Robert, A., Sato, T., Zhu, D., Halavanau, A., Marcus, G. 2024; 146

  View details for DOI 10.1016/j.diamond.2024.111212

  View details for Web of Science ID 001246892200002

• Terawatt-scale attosecond X-ray pulses from a cascaded superradiant free-electron laser NATURE PHOTONICS Franz, P., Li, S., Driver, T., Robles, R. R., Cesar, D., Isele, E., Guo, Z., Wang, J., Duris, J. P., Larsen, K., Glownia, J. M., Cheng, X., Hoffmann, M. C., Li, X., Lin, M., Kamalov, A., Obaid, R., Summers, A., Sudar, N., Thierstein, E., Zhang, Z., Kling, M. F., Huang, Z., Cryan, J. P., Marinelli, A. 2024

  View details for DOI 10.1038/s41566-024-01427-w

  View details for Web of Science ID 001220935700001

• Experimental demonstration of attosecond pump-probe spectroscopy with an X-ray free-electron laser NATURE PHOTONICS Guo, Z., Driver, T., Beauvarlet, S., Cesar, D., Duris, J., Franz, P. L., Alexander, O., Bohler, D., Bostedt, C., Averbukh, V., Cheng, X., Dimauro, L. F., Doumy, G., Forbes, R., Gessner, O., Glownia, J. M., Isele, E., Kamalov, A., Larsen, K. A., Li, S., Li, X., Lin, M., Mccracken, G. A., Obaid, R., O'Neal, J. T., Robles, R. R., Rolles, D., Ruberti, M., Rudenko, A., Slaughter, D. S., Sudar, N. S., Thierstein, E., Tuthill, D., Ueda, K., Wang, E., Wang, A. L., Wang, J., Weber, T., Wolf, T. A., Young, L., Zhang, Z., Bucksbaum, P. H., Marangos, J. P., Kling, M. F., Huang, Z., Walter, P., Inhester, L., Berrah, N., Cryan, J. P., Marinelli, A. 2024

  View details for DOI 10.1038/s41566-024-01419-w

  View details for Web of Science ID 001200371400001

• Fast modeling of regenerative amplifier free-electron lasers PHYSICAL REVIEW RESEARCH Robles, R. R., Halavanau, A., Marcus, G., Huang, Z. 2023; 5 (4)

  View details for DOI 10.1103/PhysRevResearch.5.043254

  View details for Web of Science ID 001128791700002

• Low-loss stable storage of 1.2 & ANGS; X-ray pulses in a 14 m Bragg cavity NATURE PHOTONICS Margraf, R., Robles, R., Halavanau, A., Kryzywinski, J., Li, K., MacArthur, J., Osaka, T., Sakdinawat, A., Sato, T., Sun, Y., Tamasaku, K., Huang, Z., Marcus, G., Zhu, D. 2023

  View details for DOI 10.1038/s41566-023-01267-0

  View details for Web of Science ID 001048092600001

• Reconstruction of x-ray free-electron laser pulse duration and energy chirp from spectral intensity fluctuations PHYSICAL REVIEW ACCELERATORS AND BEAMS Robles, R. R., Halavanau, A., Cesar, D., Lutman, A., Stupakov, G. 2023; 26 (3)

  View details for DOI 10.1103/PhysRevAccelBeams.26.030701

  View details for Web of Science ID 000974386300001

• X-ray Free Electron Laser Accelerator Lattice Design Using Laser-Assisted Bunch Compression APPLIED SCIENCES-BASEL Xu, H., Anisimov, P. M., Carlsten, B. E., Duffy, L. D., Marksteiner, Q. R., Robles, R. R. 2023; 13 (4)

  View details for DOI 10.3390/app13042285

  View details for Web of Science ID 000938231700001

• Experimental setup for high-resolution characterization of crystal optics for coherent X-ray beam applications. Journal of applied crystallography Halavanau, A., Margraf, R., Robles, R., MacArthur, J., Qu, Z., Marcus, G., Wu, J., Sato, T., Zhu, D., Takacs, C. J., Arthur, R., Kraynis, O., Johnson, B., Rabedeau, T. 2023; 56 (Pt 1): 155-159

  Abstract

  Stanford Synchrotron Radiation Lightsource serves a wide scientific community with its variety of X-ray capabilities. Recently, a wiggler X-ray source located at beamline 10-2 has been employed to perform high-resolution rocking curve imaging (RCI) of diamond and silicon crystals. X-ray RCI is invaluable for the development of upcoming cavity-based X-ray sources at SLAC, including the cavity-based X-ray free-electron laser and X-ray laser oscillator. In this paper, the RCI apparatus is described and experimental results are provided to validate its design. Future improvements of the setup are also discussed.

  View details for DOI 10.1107/S1600576722010998

  View details for PubMedID 36777134

  View details for PubMedCentralID PMC9901917

• Versatile, high brightness, cryogenic photoinjector electron source PHYSICAL REVIEW ACCELERATORS AND BEAMS Robles, R. R., Camacho, O., Fukasawa, A., Majernik, N., Rosenzweig, J. B. 2021; 24 (6)

  View details for DOI 10.1103/PhysRevAccelBeams.24.063401

  View details for Web of Science ID 000663491400001