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Proceedings Paper

ultra-thin Bragg crystals for LCLS beam-sharing operation
Author(s): Yiping Feng; Diling Zhu; Aymeric Robert; Henrik T. Lemke; Matthieu Chollet; David M. Fritz; Jerome B. Hastings; Jan M. Feldkamp; Marco Cammarata; Stefan Moeller; Makina Yabashi; Kensuke Tono; Xianrong Huang
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Paper Abstract

The advent of X-ray Free-electron Laser (FEL) such as the Linac Coherent Light Source (LCLS) has and will continue to enable breakthroughs and discoveries in a wide range of scientific disciplines including physics, chemistry, structural biology, and material science. It has created high demand on user beamtime that is often left unfulfilled. We report here the fabrication, characterization and X-ray measurements of ultra-thin silicon single-crystal membranes for potentially beam-sharing the LCLS beam. Using a special fabrication process, samples of (111), (110), and (100) orientations were made with thicknesses ranging from 5 to 20 μm. Both high-resolution rocking curves and white-beam topographic data were first obtained using synchrotron X-rays, demonstrating near ideal diffraction qualities. Subsequent tests using the full LCLS FEL beam revealed lattice distortions from beam-induced membrane vibrations, which were then shown to be effectively reduced by ambient air or with smaller membrane dimensions. These findings are paving a way for a practical beam-sharing implementation at LCLS in the near future.

Paper Details

Date Published: 17 October 2012
PDF: 6 pages
Proc. SPIE 8504, X-Ray Free-Electron Lasers: Beam Diagnostics, Beamline Instrumentation, and Applications, 85040V (17 October 2012); doi: 10.1117/12.930944
Show Author Affiliations
Yiping Feng, SLAC National Accelerator Lab. (United States)
Diling Zhu, SLAC National Accelerator Lab. (United States)
Aymeric Robert, SLAC National Accelerator Lab. (United States)
Henrik T. Lemke, SLAC National Accelerator Lab. (United States)
Matthieu Chollet, SLAC National Accelerator Lab. (United States)
David M. Fritz, SLAC National Accelerator Lab. (United States)
Jerome B. Hastings, SLAC National Accelerator Lab. (United States)
Jan M. Feldkamp, SLAC National Accelerator Lab. (United States)
Marco Cammarata, SLAC National Accelerator Lab. (United States)
Stefan Moeller, SLAC National Accelerator Lab. (United States)
Makina Yabashi, SPring-8, RIKEN (Japan)
Kensuke Tono, SPring-8, RIKEN (Japan)
Xianrong Huang, Argonne National Lab. (United States)


Published in SPIE Proceedings Vol. 8504:
X-Ray Free-Electron Lasers: Beam Diagnostics, Beamline Instrumentation, and Applications
Stefan P. Moeller; Makina Yabashi; Stefan P. Hau-Riege, Editor(s)

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