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30 July 2010 Cooling system for the soft x-ray spectrometer (SXS) onboard ASTRO-H
Ryuichi Fujimoto; Kazuhisa Mitsuda; Noriko Yamasaki; Yoh Takei; Masahiro Tsujimoto; Hiroyuki Sugita; Yoichi Sato; Keisuke Shinozaki; Atsushi Okamoto; Takaya Ohashi; Yoshitaka Ishisaki; Yuichiro Ezoe; Kumi Ishikawa; Masahide Murakami; Shunji Kitamoto; Hiroshi Murakami; Toru Tamagawa; Madoka Kawaharada; Hiroya Yamaguchi; Kosuke Sato; Akio Hoshino; Kenichi Kanao; Seiji Yoshida; Mikio Miyaoka; Michael DiPirro; Peter Shirron; Gary Sneiderman; Richard L. Kelley; F. Scott Porter; Caroline A. Kilbourne; John Crow; Andrea Mattern; Ali Kashani; Dan McCammon;
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Proceedings Volume 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray; 77323H (2010); doi: 10.1117/12.856909
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States
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, Kazuhisa Mitsuda, Noriko Yamasaki, Yoh Takei, Masahiro Tsujimoto, Hiroyuki Sugita, Yoichi Sato, Keisuke Shinozaki, Atsushi Okamoto, Takaya Ohashi, Yoshitaka Ishisaki, Yuichiro Ezoe, Kumi Ishikawa, Masahide Murakami, Shunji Kitamoto, Hiroshi Murakami, Toru Tamagawa, Madoka Kawaharada, Hiroya Yamaguchi, Kosuke Sato, Akio Hoshino, Kenichi Kanao, Seiji Yoshida, Mikio Miyaoka, Michael DiPirro, Peter Shirron, Gary Sneiderman, Richard L. Kelley, F. Scott Porter, Caroline A. Kilbourne, John Crow, Andrea Mattern, Ali Kashani, 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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