Concepedia

Publication | Closed Access

New cryogenic system of the next-generation infrared astronomy mission SPICA

DOI

13

Citations

0

References

2016

Year

Hideaki Ogawa, Takao Nakagawa, Hideo Matsuhara, Keisuke Shinozaki, Ken Goto, Naoki Isobe, Manabu Kawada, Tadahito Mizutani, Yoichi Sato, Hiroyuki Sugita,
Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Abstract

We present the new design of the cryogenic system of the next-generation infrared astronomy mission SPICA under the new framework. The new design employs the V-groove design for radiators, making the best use of the Planck heritage. The new design is based on the ESA-JAXA CDF study (NG-CryoIRTel, CDF-152(A)) with a 2 m telescope, and we modified the CDF design to accommodate the 2.5 m telescope to meet the science requirements of SPICA. The basic design concept of the SPICA cryogenic system is to cool the Science Instrument Assembly (SIA, which is the combination of the telescope and focal-plane instruments) below 8K by the combination of the radiative cooling system and mechanical cryocoolers without any cryogen.