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Proceedings Paper

Temperature profile of IR-blocking windows used in cryogenic x-ray spectrometers
Author(s): Stephan Friedrich; Timothy B. Funk; Owen B. Drury; Simon E. Labov
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Paper Abstract

Cryogenic high-resolution X-ray spectrometers are typically operated with thin IR blocking windows to reduce radiative heating of the detector while allowing good x-ray transmission. We have estimated the temperature profile of these IR blocking windows under typical operating conditions. We show that the temperature in the center of the window is raised due to radiation from the higher temperature stages. This can increase the infrared photon flux onto the detector, thereby increasing the IR noise and decreasing the cryostat hold time. The increased window temperature constrains the maximum window size and the number of windows required. We discuss the consequences for IR blocking window design.

Paper Details

Date Published: 13 December 2000
PDF: 7 pages
Proc. SPIE 4140, X-Ray and Gamma-Ray Instrumentation for Astronomy XI, (13 December 2000); doi: 10.1117/12.409143
Show Author Affiliations
Stephan Friedrich, Lawrence Livermore National Lab. and Lawrence Berkeley National Lab. (United States)
Timothy B. Funk, Lawrence Berkeley National Lab. (United States)
Owen B. Drury, Lawrence Livermore National Lab. (United States)
Simon E. Labov, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 4140:
X-Ray and Gamma-Ray Instrumentation for Astronomy XI
Kathryn A. Flanagan; Oswald H. W. Siegmund, Editor(s)

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