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Title: Performance of a beam-multiplexing diamond crystal monochromator at the Linac Coherent Light Source

Abstract

A double-crystal diamond monochromator was recently implemented at the Linac Coherent Light Source. It enables splitting pulses generated by the free electron laser in the hard x-ray regime and thus allows the simultaneous operations of two instruments. Both monochromator crystals are High-Pressure High-Temperature grown type-IIa diamond crystal plates with the (111) orientation. The first crystal has a thickness of ∼100 μm to allow high reflectivity within the Bragg bandwidth and good transmission for the other wavelengths for downstream use. The second crystal is about 300 μm thick and makes the exit beam of the monochromator parallel to the incoming beam with an offset of 600 mm. Here we present details on the monochromator design and its performance.

Authors:
; ; ; ; ; ; ; ; ; ; ; ;  [1]; ;  [2]; ;  [3];  [1];  [4]
  1. Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States)
  2. Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439 (United States)
  3. Technological Institute of Superhard and Novel Carbon Materials, Tsentralnaya str. 7a, Troitsk, Moscow 142190 (Russian Federation)
  4. (Denmark)
Publication Date:
OSTI Identifier:
22308842
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 6; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BEAMS; BRAGG REFLECTION; CRYSTAL STRUCTURE; CRYSTALS; DIAMONDS; FREE ELECTRON LASERS; HARD X RADIATION; LIGHT SOURCES; LINEAR ACCELERATORS; MONOCHROMATORS; PERFORMANCE; PRESSURE RANGE MEGA PA 10-100; REFLECTIVITY; TEMPERATURE RANGE 0400-1000 K; WAVELENGTHS

Citation Formats

Zhu, Diling, E-mail: dlzhu@slac.stanford.edu, Feng, Yiping, Lemke, Henrik T., Fritz, David M., Chollet, Matthieu, Glownia, J. M., Alonso-Mori, Roberto, Sikorski, Marcin, Song, Sanghoon, Williams, Garth J., Messerschmidt, Marc, Boutet, Sébastien, Robert, Aymeric, Stoupin, Stanislav, Shvyd'ko, Yuri V., Terentyev, Sergey A., Blank, Vladimir D., Driel, Tim B. van, and Center for Molecular Movies, Department of Physics, Technical University of Denmark, DK-2800 Lyngby. Performance of a beam-multiplexing diamond crystal monochromator at the Linac Coherent Light Source. United States: N. p., 2014. Web. doi:10.1063/1.4880724.
Zhu, Diling, E-mail: dlzhu@slac.stanford.edu, Feng, Yiping, Lemke, Henrik T., Fritz, David M., Chollet, Matthieu, Glownia, J. M., Alonso-Mori, Roberto, Sikorski, Marcin, Song, Sanghoon, Williams, Garth J., Messerschmidt, Marc, Boutet, Sébastien, Robert, Aymeric, Stoupin, Stanislav, Shvyd'ko, Yuri V., Terentyev, Sergey A., Blank, Vladimir D., Driel, Tim B. van, & Center for Molecular Movies, Department of Physics, Technical University of Denmark, DK-2800 Lyngby. Performance of a beam-multiplexing diamond crystal monochromator at the Linac Coherent Light Source. United States. doi:10.1063/1.4880724.
Zhu, Diling, E-mail: dlzhu@slac.stanford.edu, Feng, Yiping, Lemke, Henrik T., Fritz, David M., Chollet, Matthieu, Glownia, J. M., Alonso-Mori, Roberto, Sikorski, Marcin, Song, Sanghoon, Williams, Garth J., Messerschmidt, Marc, Boutet, Sébastien, Robert, Aymeric, Stoupin, Stanislav, Shvyd'ko, Yuri V., Terentyev, Sergey A., Blank, Vladimir D., Driel, Tim B. van, and Center for Molecular Movies, Department of Physics, Technical University of Denmark, DK-2800 Lyngby. 2014. "Performance of a beam-multiplexing diamond crystal monochromator at the Linac Coherent Light Source". United States. doi:10.1063/1.4880724.
@article{osti_22308842,
title = {Performance of a beam-multiplexing diamond crystal monochromator at the Linac Coherent Light Source},
author = {Zhu, Diling, E-mail: dlzhu@slac.stanford.edu and Feng, Yiping and Lemke, Henrik T. and Fritz, David M. and Chollet, Matthieu and Glownia, J. M. and Alonso-Mori, Roberto and Sikorski, Marcin and Song, Sanghoon and Williams, Garth J. and Messerschmidt, Marc and Boutet, Sébastien and Robert, Aymeric and Stoupin, Stanislav and Shvyd'ko, Yuri V. and Terentyev, Sergey A. and Blank, Vladimir D. and Driel, Tim B. van and Center for Molecular Movies, Department of Physics, Technical University of Denmark, DK-2800 Lyngby},
abstractNote = {A double-crystal diamond monochromator was recently implemented at the Linac Coherent Light Source. It enables splitting pulses generated by the free electron laser in the hard x-ray regime and thus allows the simultaneous operations of two instruments. Both monochromator crystals are High-Pressure High-Temperature grown type-IIa diamond crystal plates with the (111) orientation. The first crystal has a thickness of ∼100 μm to allow high reflectivity within the Bragg bandwidth and good transmission for the other wavelengths for downstream use. The second crystal is about 300 μm thick and makes the exit beam of the monochromator parallel to the incoming beam with an offset of 600 mm. Here we present details on the monochromator design and its performance.},
doi = {10.1063/1.4880724},
journal = {Review of Scientific Instruments},
number = 6,
volume = 85,
place = {United States},
year = 2014,
month = 6
}
  • Multiplexing of the Linac Coherent Light Source beam was demonstrated for hard X-rays by spectral division using a near-perfect diamond thin-crystal monochromator operating in the Bragg geometry. The wavefront and coherence properties of both the reflected and transmitted beams were well preserved, thus allowing simultaneous measurements at two separate instruments. In this report, the structure determination of a prototypical protein was performed using serial femtosecond crystallography simultaneously with a femtosecond time-resolved XANES studies of photoexcited spin transition dynamics in an iron spin-crossover system. The results of both experiments using the multiplexed beams are similar to those obtained separately, using amore » dedicated beam, with no significant differences in quality.« less
  • Multiplexing of the Linac Coherent Light Source beam was demonstrated for hard X-rays by spectral division using a near-perfect diamond thin-crystal monochromator operating in the Bragg geometry. The wavefront and coherence properties of both the reflected and transmitted beams were well preserved, thus allowing simultaneous measurements at two separate instruments. In this report, the structure determination of a prototypical protein was performed using serial femtosecond crystallography simultaneously with a femtosecond time-resolved XANES studies of photoexcited spin transition dynamics in an iron spin-crossover system. As a result, both experiments using the multiplexed beams are similar to those obtained separately, using amore » dedicated beam, with no significant differences in quality.« less
  • Multiplexing of the Linac Coherent Light Source beam was demonstrated for hard X-rays by spectral division using a near-perfect diamond thin-crystal monochromator operating in the Bragg geometry. The wavefront and coherence properties of both the reflected and transmitted beams were well preserved, thus allowing simultaneous measurements at two separate instruments. In this report, the structure determination of a prototypical protein was performed using serial femtosecond crystallography simultaneously with a femtosecond time-resolved XANES studies of photoexcited spin transition dynamics in an iron spin-crossover system. The results of both experiments using the multiplexed beams are similar to those obtained separately, using amore » dedicated beam, with no significant differences in quality.« less
  • A new operating mode has been developed for the Linac Coherent Light Source (LCLS) in which we shape the longitudinal phase space of the electron beam. This mode of operation is realized using a horizontal collimator located in the middle of the first bunch compressor to truncate the head and tail of the beam. With this method, the electron beam longitudinal phase space and current profile are reshaped, and improvement in lasing performance can be realized. As a result, we present experimental studies at the LCLS of the beam shaping effects on the free-electron laser performance.
  • A new operating mode has been developed for the Linac Coherent Light Source (LCLS) in which we shape the longitudinal phase space of the electron beam. This mode of operation is realized using a horizontal collimator located in the middle of the first bunch compressor to truncate the head and tail of the beam. With this method, the electron beam longitudinal phase space and current profile are reshaped, and improvement in lasing performance can be realized. As a result, we present experimental studies at the LCLS of the beam shaping effects on the free-electron laser performance.