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

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