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Proceedings Paper

Soft x-ray imager (SXI) onboard ASTRO-H
Author(s): Hiroshi Tsunemi; Kiyoshi Hayashida; Takeshi Go Tsuru; Tadayasu Dotani; Junko S. Hiraga; Naohisa Anabuki; Aya Bamba; Isamu Hatsukade; Takayoshi Kohmura; Koji Mori; Hiroshi Murakami; Hiroshi Nakajima; Masanobu Ozaki; Hiroyuki Uchida; Makoto Yamauchi
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Paper Abstract

We are designing an X-ray CCD camera (SXI) for ASTRO-H, including many new items. We have developed the CCD, CCD-NeXT4, that is a P-channel type CCD. It has a thick depletion layer of 200μm with an imaging area of 30mm square. Since it is back-illuminated, it has a good low energy response and is robust against the impact of micro-meteorites. We will employ 4 chips to cover the area of 60mm square. A mechanical rather than peltier cooler will be employed so that we can cool the CCD to -120°C. We will also introduce an analog ASIC that is placed very close to the CCD. It performs well, having a similar noise level to that assembled by using individual parts used on SUZAKU. We also employ a modulated X-ray source (MXS), that improves the accuracy of the calibration. The SXI will have one of the largest SΩ among various satellites.

Paper Details

Date Published: 29 July 2010
PDF: 11 pages
Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 773210 (29 July 2010);
Show Author Affiliations
Hiroshi Tsunemi, Osaka Univ. (Japan)
Kiyoshi Hayashida, Osaka Univ. (Japan)
Takeshi Go Tsuru, Kyoto Univ. (Japan)
Tadayasu Dotani, Japan Aerospace Exploration Agency (Japan)
Junko S. Hiraga, The Univ. of Tokyo (Japan)
Naohisa Anabuki, Osaka Univ. (Japan)
Aya Bamba, Japan Aerospace Exploration Agency (Japan)
Isamu Hatsukade, Univ. of Miyazaki (Japan)
Takayoshi Kohmura, Kogakuin Univ. (Japan)
Koji Mori, Univ. of Miyazaki (Japan)
Hiroshi Murakami, Rikkyo Univ. (Japan)
Hiroshi Nakajima, Osaka Univ. (Japan)
Masanobu Ozaki, Japan Aerospace Exploration Agency (Japan)
Hiroyuki Uchida, Osaka Univ. (Japan)
Makoto Yamauchi, Univ. of Miyazaki (Japan)

Published in SPIE Proceedings Vol. 7732:
Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray
Monique Arnaud; Stephen S. Murray; Tadayuki Takahashi, Editor(s)

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