Thermal study of payload module for the next-generation infrared space telescope SPICA in risk mitigation phase

Keisuke Shinozaki; Yoichi Sato; Kenichiro Sawada; Makiko Ando; Hiroyuki Sugita; Toshihiko Yamawaki; Tadahito Mizutani; Keiji Komatsu; Shun Okazaki; Hiroyuki Ogawa; Takao Nakagawa; Hideo Matsuhara; Makoto Takada; Akinobu Okabayashi; Shoji Tsunematsu; Katsuhiro Narasaki

doi:10.1117/12.2056650

28 August 2014 Thermal study of payload module for the next-generation infrared space telescope SPICA in risk mitigation phase

Keisuke Shinozaki, Yoichi Sato, Kenichiro Sawada, Makiko Ando, Hiroyuki Sugita, Toshihiko Yamawaki, Tadahito Mizutani, Keiji Komatsu, Shun Okazaki, Hiroyuki Ogawa, Takao Nakagawa, Hideo Matsuhara, Makoto Takada, Akinobu Okabayashi, Shoji Tsunematsu, Katsuhiro Narasaki

Author Affiliations +

Proceedings Volume 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave; 914349 (2014) https://doi.org/10.1117/12.2056650
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

The Space Infrared Telescope for Cosmology and Astrophysics (SPICA) is a pre-project of JAXA in collaboration with ESA to be launched around 2025. The SPICA mission is to be launched into a halo orbit around the second Lagrangian point in the Sun-Earth system, which allows us to use effective radiant cooling in combination with a mechanical cooling system in order to cool a 3m large IR telescope below 6K. The use of 4K / 1K-class Joule-Thomson coolers is proposed in order to cool the telescope and provide a 4K / 1K temperature region for Focal Plane Instruments (FPIs). This paper introduces details of the thermal design study for the SPICA payload module in the Risk-Mitigation-Phase (RMP), in which the activity is focused on mitigating the mission’s highest risks. As the result of the RMP activity, most of all the goals have been fully satisfied and the thermal design of the payload module has been dramatically improved.

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Keisuke Shinozaki, Yoichi Sato, Kenichiro Sawada, Makiko Ando, Hiroyuki Sugita, Toshihiko Yamawaki, Tadahito Mizutani, Keiji Komatsu, Shun Okazaki, Hiroyuki Ogawa, Takao Nakagawa, Hideo Matsuhara, Makoto Takada, Akinobu Okabayashi, Shoji Tsunematsu, and Katsuhiro Narasaki "Thermal study of payload module for the next-generation infrared space telescope SPICA in risk mitigation phase", Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 914349 (28 August 2014); https://doi.org/10.1117/12.2056650

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