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

Diling Zhu, Yiping Feng, Stanislav Stoupin, Sergey A. Terentyev, Henrik T. Lemke, David M. Fritz, Matthieu Chollet, J.M. Glownia, Roberto Alonso-Mori, Marcin Sikorski, Sanghoon Song, Tim Brandt van Driel, Garth J. Williams, Marc Messerschmidt, Sébastien Boutet, Vladimir D. Blank, Yuri V. Shvyd'ko, Aymeric Robert

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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. © 2014 AIP Publishing LLC.
Original languageEnglish
JournalReview of Scientific Instruments
Volume85
Issue number6
Pages (from-to)063106
Number of pages7
ISSN0034-6748
DOIs
Publication statusPublished - 2014

Bibliographical note

© 2014 AIP Publishing LLC

Keywords

  • Instrumentation
  • Coherent light
  • Crystal orientation
  • Diamonds
  • Free electron lasers
  • Light sources
  • Linear accelerators
  • Bragg bandwidth
  • Diamond crystals
  • High reflectivity
  • High temperature
  • Linac Coherent Light Source
  • Monochromator crystals
  • Second crystal
  • Simultaneous operation
  • Monochromators

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