2014/01/23 by Stanislav Stoupin, S. Stoupin, Sergey Terentyev +51
Materials Science · Medicine · Physics and Astronomy · #Adrenal and Paraganglionic Tumors #Advanced X-ray Imaging Techniques #Diamond and Carbon-based Materials Research #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Optics (physics.optics) #cond-mat.mtrl-sci #physics.optics
paper · pdf · doi:10.48550/arxiv.1401.5879
arxiv created 2014/01/23 · openalex publication_date 2014/01/23 · arxiv updated 2014/01/24 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
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 um provides sufficient X-ray transmittance to enable simultaneous operation of two beamlines. Here we report on the design, fabrication, and X-ray characterization of the first and second (300-um-thick) crystals utilized in the monochromator and the optical assemblies holding these crystals. Each crystal plate has a region of about 5 X 2 mm2 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 X 2 mm2 working regions of the crystals.