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Proceedings Paper

Contact-cooled U monochromators for high heat load x-ray beamlines
Author(s): Ali M. Khounsary; Wenbing Yun; Emil M. Trakhtenberg; Shenglan Xu; Lahsen Assoufid; Wah Keat Lee
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Paper Abstract

This paper describes the design, expected performance, and preliminary test results of a contact-cooled monochromator for use on high heat load x-ray beamlines. The monochromator has a cross section in the shape of the letter U. This monochromator should be suitable for handing heat fluxes up to 5 W/mm2. As such, for the present application, it is compatible with the best internally cooled silicon crystal monochromators operating at room temperature. There are three key features in the design of this monochromator. First, it is contact cooled, thereby eliminating fabrication of cooling channels, bonding, an undesirable strains in the monochromator due to coolant-manifold-to-crystal-interface. Second, by illuminating the entire length of the crystal and extracting the central part of the reflected beam, sharp slope changes in the beam profile and thus slope errors are avoided. Last, by selecting appropriate crystal geometry and cooling locations, tangential slope error can be substantially reduced.

Paper Details

Date Published: 21 November 1996
PDF: 8 pages
Proc. SPIE 2855, High Heat Flux Engineering III, (21 November 1996); doi: 10.1117/12.259834
Show Author Affiliations
Ali M. Khounsary, Argonne National Lab. (United States)
Wenbing Yun, Argonne National Lab. (United States)
Emil M. Trakhtenberg, Argonne National Lab. (United States)
Shenglan Xu, Argonne National Lab. (United States)
Lahsen Assoufid, Argonne National Lab. (United States)
Wah Keat Lee, Argonne National Lab. (United States)

Published in SPIE Proceedings Vol. 2855:
High Heat Flux Engineering III
Ali M. Khounsary, Editor(s)

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