Water-cooled crystal and multilayer optics for a wiggler beamline

Karl W. Smolenski; Randall L. Headrick; Qun Shen; Brian Carroll; Ali M. Khounsary; Chian Liu; Albert T. Macrander

doi:10.1117/12.332523

11 December 1998 Water-cooled crystal and multilayer optics for a wiggler beamline

Karl W. Smolenski, Randall L. Headrick, Qun Shen, Brian Carroll, Ali M. Khounsary, Chian Liu, Albert T. Macrander

Proceedings Volume 3448, Crystal and Multilayer Optics; (1998) https://doi.org/10.1117/12.332523
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

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.

Citation Download Citation

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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