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Proceedings Paper

Development of a microcalorimeter array for the Diffuse-Intergalactic Oxygen-Surveyor (DIOS) mission
Author(s): Yoshitaka Ishisaki; Takaya Ohashi; Tai Oshima; Umeyo Morita; Keisuke Shinozaki; Kosuke Sato; Kazuhisa Mitsuda; Noriko Y. Yamasaki; Ryuichi Fujimoto; Yoh Takei; Hirotaka Sato; Noriyuki Takahashi; Takayuki Homma; Tetsuya Osaka
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Paper Abstract

We are developing a superconducting transition-edge sensor (TES) microcalorimeter array for the Diffuse Intergalactic Oxygen Surveyor (DIOS) mission. DIOS is a relatively small Japanese X-ray mission which will study large-scale distribution of the warm-hot intergalactic medium (WHIM) using OVII and OVIII emission lines. The satellite weighs about 400 kg equipped with a four-reflection X-ray telescope (FXT) and a TES microcalorimeter array (XSA). The design goal of the observing system is an effective area larger than 100 cm2 at the oxygen line energy, a field of view about 50 arcmin square, and an energy resolution about 2 eV in the energy range of 0.3-1 keV. The TES microcalorimeter array provides the large field of view and good energy resolution at the same time. We plan to install an array comprising 16 x 16 pixels with an overall size of 1 cm square, which is cooled with a cryogen-free cooler. Pixels are readout by multiplexing signals using a multi-input SQUID amplifier, with each input connected to a TES microcalorimeter which is AC biased with a different frequency. We report the design and present status of the XSA system development.

Paper Details

Date Published: 29 September 2004
PDF: 12 pages
Proc. SPIE 5501, High-Energy Detectors in Astronomy, (29 September 2004); doi: 10.1117/12.551398
Show Author Affiliations
Yoshitaka Ishisaki, Tokyo Metropolitan Univ. (Japan)
Takaya Ohashi, Tokyo Metropolitan Univ. (Japan)
Tai Oshima, Tokyo Metropolitan Univ. (Japan)
Umeyo Morita, Tokyo Metropolitan Univ. (Japan)
Keisuke Shinozaki, Tokyo Metropolitan Univ. (Japan)
Kosuke Sato, Tokyo Metropolitan Univ. (Japan)
Kazuhisa Mitsuda, Institute of Space and Astronautical Science/JAXA (Japan)
Noriko Y. Yamasaki, Institute of Space and Astronautical Science/JAXA (Japan)
Ryuichi Fujimoto, Institute of Space and Astronautical Science/JAXA (Japan)
Yoh Takei, Institute of Space and Astronautical Science/JAXA (Japan)
Hirotaka Sato, Waseda Univ. (Japan)
Noriyuki Takahashi, Waseda Univ. (Japan)
Takayuki Homma, Waseda Univ. (Japan)
Tetsuya Osaka, Waseda Univ. (Japan)


Published in SPIE Proceedings Vol. 5501:
High-Energy Detectors in Astronomy
Andrew D. Holland, Editor(s)

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