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11 December 1998 Water-cooled crystal and multilayer optics for a wiggler beamline
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Abstract
A set of internally water-cooled multilayers were fabricated for the double crystal monochromator of the A2 wiggler beamline at CHESS. With over 3 kW total deposited on the first multilayer, conventional contact cooled multilayers proved unable to cope with the incident heat load. Cooled silicon substrates were fabricated with internal water cooling channels to reduce or eliminate thermal distortion. The highly polished top surfaces were coated with a sputtered W/C or W/B4C multilayer film deposited at the Advanced Photon Source and Osmic, Inc. respectively. Measured reflectivities over 60% and bandwidths of 1.3 - 1.8% were obtained. Results to beam currents of 250 mA show the effectiveness of the internal cooling design and have provided x-ray fluxes of 1 X 1013 photons/sec/mm2.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Karl W. Smolenski, Randall L. Headrick, Qun Shen, Brian Carroll, Ali M. Khounsary, Chian Liu, and Albert T. Macrander "Water-cooled crystal and multilayer optics for a wiggler beamline", Proc. SPIE 3448, Crystal and Multilayer Optics, (11 December 1998); https://doi.org/10.1117/12.332523
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