5 August 2010 System requirements and design concept of the SPICA Mission
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Abstract
SPICA is a next generation infrared astronomy mission to reveal the origin of planets and galaxies. The mission is led by Japan Aerospace Exploration Agency (JAXA) in collaboration with the European Space Agency (ESA) and international consortiums in Japan, Europe, USA, and the Republic of Korea. SPICA is an "observatory" based on the heritage of AKARI's "all sky survey". ESA provides a 3-m class telescope using technology heritage of Herschel. The SPICA will achieve superior sensitivity in the mid- to far- infrared astronomy to be launched into space. SPICA has a completely new cooling system, which utilizes efficient mechanical coolers. This system enables a large, cryogenically cooled telescope in space. SPICA system concept and requirements are clear, but it is not easy to design. SPICA spacecraft consists of the Payload Module (PLM) and the Bus Module (BM). The PLM includes mechanical coolers and passive thermal shields, which enable to cool down the telescope and scientific instruments below 6K. The PLM is connected to the BM with low thermal conductivity truss structure to keep the PLM cool and the BM warm. This paper describes how to meet the system requirements to establish the feasible design of SPICA spacecraft.
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Nobuhiro Takahashi, Nobuhiro Takahashi, Takao Nakagawa, Takao Nakagawa, Hiroshi Murakami, Hiroshi Murakami, Hideo Matsuhara, Hideo Matsuhara, Hiroyuki Sugita, Hiroyuki Sugita, Toshihiko Yamawaki, Toshihiko Yamawaki, } "System requirements and design concept of the SPICA Mission", Proc. SPIE 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave, 77310P (5 August 2010); doi: 10.1117/12.856808; https://doi.org/10.1117/12.856808
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