Thermal design utilizing radiative cooling for the payload module of LiteBIRD

Takashi Hasebe, Shingo Kashima, Satoru Uozumi, Hirokazu Ishino, Shin Utsunomiya, Hirofumi Noda, Kazuhisa Mitsuda, Yutaro Sekimoto, Tadayasu Dotani, Tomotake Matsumura, Hajime Sugai, Masahiro Tsujimoto, Hiroaki Imada, Masashi Hazumi

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

The conceptual thermal design of the payload module (PLM) of LiteBIRD utilizing radiative cooling is studied. The thermal environment and structure design of the PLM strongly depend on the precession angle α of the spacecraft. In this study, the geometrical models of the PLM that consist of the sunshield, three layers of Vgrooves, and 5 K shield were designed in the cases of α = 45°, 30°, and 5°. The mission instruments of LiteBIRD are cooled down below 5 K. Therefore, heat transfers down to the 5 K cryogenic part were estimated in each case of α. The radiative heat transfers were calculated by using geometrical models of the PLM. The conductive heat transfers and the active cooling with cryocoolers were considered. We also studied the case that the inner surface of the V-groove is coated by a high-emissivity material.

本文言語English
ホスト出版物のタイトルSpace Telescopes and Instrumentation 2018
ホスト出版物のサブタイトルOptical, Infrared, and Millimeter Wave
編集者Giovanni G. Fazio, Howard A. MacEwen, Makenzie Lystrup
出版社SPIE
ISBN(印刷版)9781510619494
DOI
出版ステータスPublished - 2018
イベントSpace Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave - Austin, United States
継続期間: 2018 6 102018 6 15

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
10698
ISSN(印刷版)0277-786X
ISSN(電子版)1996-756X

Other

OtherSpace Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave
CountryUnited States
CityAustin
Period18/6/1018/6/15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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