30 July 2010 Cooling system for the soft x-ray spectrometer (SXS) onboard ASTRO-H
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Abstract
The Soft X-ray Spectrometer (SXS) is a cryogenic high resolution X-ray spectrometer onboard the X-ray astronomy satellite ASTRO-H. The detector array is cooled down to 50 mK using a 3-stage adiabatic demagnetization refrigerator (ADR). The cooling chain from room temperature to the ADR heat-sink is composed of superfluid liquid He, a 4He Joule-Thomson cryocooler, and 2-stage Stirling cryocoolers. It is designed to keep 30 L of liquid He for more than 3 years in the nominal case. It is also designed with redundant subsystems throughout from room temperature to the ADR heat-sink, to alleviate failure of a single cryocooler or loss of liquid He.
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Ryuichi Fujimoto, Ryuichi Fujimoto, Kazuhisa Mitsuda, Kazuhisa Mitsuda, Noriko Yamasaki, Noriko Yamasaki, Yoh Takei, Yoh Takei, Masahiro Tsujimoto, Masahiro Tsujimoto, Hiroyuki Sugita, Hiroyuki Sugita, Yoichi Sato, Yoichi Sato, Keisuke Shinozaki, Keisuke Shinozaki, Atsushi Okamoto, Atsushi Okamoto, Takaya Ohashi, Takaya Ohashi, Yoshitaka Ishisaki, Yoshitaka Ishisaki, Yuichiro Ezoe, Yuichiro Ezoe, Kumi Ishikawa, Kumi Ishikawa, Masahide Murakami, Masahide Murakami, Shunji Kitamoto, Shunji Kitamoto, Hiroshi Murakami, Hiroshi Murakami, Toru Tamagawa, Toru Tamagawa, Madoka Kawaharada, Madoka Kawaharada, Hiroya Yamaguchi, Hiroya Yamaguchi, Kosuke Sato, Kosuke Sato, Akio Hoshino, Akio Hoshino, Kenichi Kanao, Kenichi Kanao, Seiji Yoshida, Seiji Yoshida, Mikio Miyaoka, Mikio Miyaoka, Michael DiPirro, Michael DiPirro, Peter Shirron, Peter Shirron, Gary Sneiderman, Gary Sneiderman, Richard L. Kelley, Richard L. Kelley, F. Scott Porter, F. Scott Porter, Caroline A. Kilbourne, Caroline A. Kilbourne, John Crow, John Crow, Andrea Mattern, Andrea Mattern, Ali Kashani, Ali Kashani, Dan McCammon, Dan McCammon, } "Cooling system for the soft x-ray spectrometer (SXS) onboard ASTRO-H", Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77323H (30 July 2010); doi: 10.1117/12.856909; https://doi.org/10.1117/12.856909
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