A study of the thermal radiation suppression from the aperture plane of high sensitivity detector cooled the cryogenic temperature

2016 Fiscal Year Final Research Report

• Project/Area Number: 25420857
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: KIMURA Nobuhiro 大学共同利用機関法人高エネルギー加速器研究機構, 超伝導低温工学センター, 准教授 (10249899)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 熱輻射 / 熱輻射抑制 / パイプ型輻射シールド / バッフル / 黒化処理 / ヒートパイプ / ドライアウト

Outline of Final Research Achievements

The observation such as the x-ray or infrared astronomy satellite is observed with the high sensitivity detector that was cooled to cryogenic temperature from an aperture plane. The thermal radiation becomes heat load to cryo-cooler on the satellite. Because of limitation of cooling capacity of cryocooler on the satellite, it is important subject suppression of this heat load for the cryo-cooler.
In this study, design technique of a pipe type radiation shield equipped with baffles, which used ray-tracing method, carried out in order to suppress the thermal radiation from the aperture plane. It was shown the radiation from the opening surface could be suppressed by actual proof experiment based on this design technique. This research result was applied to the design of the pipe type shield of the low temperature gravity wave telescope, and it succeeded heat input to the interferometer mirror cooled to the cryogenic temperature from the plane by more than two orders of magnitude.

Free Research Field

低温工学