All-diamond optical assemblies for a beam-multiplexing X-ray monochromator at the Linac Coherent Light Source
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); DOE/OSTI
- Technological Inst. for Superhard and Novel Carbon Materials, Troitsk (Russian Federation)
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Technological Inst. for Superhard and Novel Carbon Materials, Troitsk (Russian Federation); Lomonsov Moscow State Univ. (Russian Federation). Skobeltsyn Inst. of Nuclear Physics
- Illinois Institute of Technology, Chicago, IL (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS)
A double-crystal diamond (111) monochromator recently implemented at the Linac Coherent Light Source (LCLS) enables splitting of the primary X-ray beam into a pink (transmitted) and a monochromatic (reflected) branch. The first monochromator crystal, with a thickness of ~100 µm, provides sufficient X-ray transmittance to enable simultaneous operation of two beamlines. This article reports the design, fabrication and X-ray characterization of the first and second (300 µm-thick) crystals utilized in the monochromator and the optical assemblies holding these crystals. Each crystal plate has a region of about 5 × 2 mm with low defect concentration, sufficient for use in X-ray optics at the LCLS. The optical assemblies holding the crystals were designed to provide mounting on a rigid substrate and to minimize mounting-induced crystal strain. The induced strain was evaluated using double-crystal X-ray topography and was found to be small over the 5 × 2 mm working regions of the crystals.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Russian Ministry of Education and Science
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1625766
- Journal Information:
- Journal of Applied Crystallography (Online), Journal Name: Journal of Applied Crystallography (Online) Journal Issue: 4 Vol. 47; ISSN 1600-5767; ISSN JACGAR
- Publisher:
- International Union of CrystallographyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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