論文

査読有り
2019年10月1日

Optimization of cryogenic architecture for LiteBIRD satellite using radiative cooling

Journal of Astronomical Telescopes, Instruments, and Systems
  • Takashi Hasebe
  • ,
  • Yutaro Sekimoto
  • ,
  • Tadayasu Dotani
  • ,
  • Kazuhisa Mitsuda
  • ,
  • Keisuke Shinozaki
  • ,
  • Seiji Yoshida

5
4
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1117/1.JATIS.5.4.044002

© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE). Radiative cooling with thermal isolation shields can provide a reliable cooling system for instruments onboard satellites in orbit. We report the optimization study for the cryogenic architecture of the LiteBIRD satellite using radiative cooling. A trade study that changed the number of thermal shields and shield emissivity were conducted. The heat flow from 300 to 4.5 K, including active cooling by mechanical cryocoolers, was evaluated among the trade designs. We found that the design that consists of low-emissivity four-layer thermal shields is optimum in terms of thermal performance and system design. The optimum design achieved a heat load of 29.9 mW for the 4.5-K cooling stage, whereas the requirement was 30 mW with the assumed cryogenic system.

リンク情報
DOI
https://doi.org/10.1117/1.JATIS.5.4.044002
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85073713944&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85073713944&origin=inward
ID情報
  • DOI : 10.1117/1.JATIS.5.4.044002
  • ISSN : 2329-4124
  • eISSN : 2329-4221
  • SCOPUS ID : 85073713944

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