Thermal design of the hard x-ray imager and the soft gamma-ray detector onboard ASTRO-H

Hirofumi Noda, Kazuhiro Nakazawa, Kazuo Makishima, Naoko Iwata, Hiroyuki Ogawa, Masayuki Ohta, Goro Sato, Madoka Kawaharada, Shin Watanabe, Motohide Kokubun, Masanori Ohno, Yasushi Fukazawa, Hiroyasu Tajima, Hideki Uchiyama, Shuji Ito, Keita Fukuzawa

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

The Hard X-ray Imager and the Soft Gamma-ray Detector, onboard the 6th Japanese X-ray satellite ASTRO-H, aim at unprecedentedly-sensitive observations in the 5-80 keV and 40-600 keV bands, respectively. Because their main sensors are composed of a number of semi-conductor devices, which need to be operated in a temperature of -20 to -15â-▪C, heat generated in the sensors must be efficiently transported outwards by thermal conduction. For this purpose, we performed thermal design, with the following three steps. First, we additionally included thermally-conductive parts, copper poles and graphite sheets. Second, constructing a thermal mathematical model of the sensors, we estimated temperature distributions in thermal equilibria. Since the model had rather large uncertainties in contact thermal conductions, an accurate thermal dummy was constructed as our final step. Vacuum measurement with the dummy successfully reduced the conductance uncertainties. With these steps, we confirmed that our thermal design of the main sensors satisfies the temperature requirement.

本文言語English
ホスト出版物のタイトルProceedings of SPIE - The International Society for Optical Engineering
出版社SPIE
9144
ISBN(印刷版)9780819496126
DOI
出版ステータスPublished - 2014
イベントSpace Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray - Montreal
継続期間: 2014 6 222014 6 26

Other

OtherSpace Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray
CityMontreal
Period14/6/2214/6/26

ASJC Scopus subject areas

  • 応用数学
  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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