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Proceedings Paper

Multilayer optics under CHESS A2 wiggler beam
Author(s): A. Kazimirov; P. Revesz; Rong Huang
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Paper Abstract

The CHESS A-line 49 pole wiggler produces a total power of 6.6 kW when operating at 5.3 GeV and 200 mA current. Half of this beam is directed into the A2 station operating with both crystal and multilayer optics. The heat load response of the multilayer optics was studied by changing the total power deposited on the first multilayer by varying the slit size. The W/B4C, 300 bi-layers, d=15 Å multilayers with the energy resolution of ΔE/E=0.5% were used in our experiment. The results from identical multilayers deposited on Si and SiC substrates, which differ by a factor of two in thermal conductivity, are presented and compared. The thermal distortions of the first multilayer were measured by using recently developed optical in-situ visualization technique and compared with ANSYS simulations. X-ray measurements of the monochromator throughput and effective source size confirm the results of the optical measurements and ANSYS simulations and demonstrate the superior behavior of SiC-substrate based ML optics under high heat load.

Paper Details

Date Published: 3 September 2008
PDF: 8 pages
Proc. SPIE 7077, Advances in X-Ray/EUV Optics and Components III, 707702 (3 September 2008); doi: 10.1117/12.793740
Show Author Affiliations
A. Kazimirov, Cornell Univ. (United States)
P. Revesz, Cornell Univ. (United States)
Rong Huang, Univ. of Chicago (United States)


Published in SPIE Proceedings Vol. 7077:
Advances in X-Ray/EUV Optics and Components III
Ali M. Khounsary; Christian Morawe; Shunji Goto, Editor(s)

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