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Design of the second generation XRS detector

โœ Scribed by Galeazzi, M; Boyce, K.R; Brown, G.V; Chen, C; Cottam, J; Figueroa-Feliciano, E; Jacobson, M.B; Kelley, R.L; Liu, D; McCammon, D; Porter, F.S; Rocks, L.E; Stahle, C.K; Szymkowiak, A.E; Vaillancourt, J.E

Book ID
103852945
Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
194 KB
Volume
520
Category
Article
ISSN
0168-9002

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โœฆ Synopsis

Microcalorimeter performance is limited by non-ideal effects that were not included in the standard theory of bolometers and microcalorimeters developed 20 years ago by Mather (Appl. Opt. 21 (1982) 1125). These include the hot-electron effect, absorber decoupling, thermometer non-ohmic behavior, and all related extra noise sources. Models that include these effects have been developed and can be used to optimize the design of microcalorimeters for best performance. The design of the array for the XRS detector on the Astro-E2 satellite was completely optimized based on the required performance and on the characteristics of the materials used. The characteristic heat capacity and thermal conductivity of all the detector components have been measured and the values have been used as input to the models to design the detector geometry for best performance. Mechanical modeling has also been carried out in parallel to ensure the mechanical integrity of the microcalorimeter. We report here the analysis involved in the optimization of the detectors, and the comparison between modeled and measured performance.

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