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Proceedings Paper

Development of the x-ray CCD for SXI on board ASTRO-H
Author(s): Shutaro Ueda; Kiyoshi Hayashida; Hiroshi Nakajima; Naohisa Anabuki; Hiroyuki Uchida; Hiroshi Tsunemi; Mari Fujikawa; Hideki Mori; Takayoshi Kohmura; Tatsuo Watanabe; Kohei Kawai; Shoma Ikeda; Kenta Kaneko; Kazuya Sakata; Shotaro Todoroki; Hideki Mizuno; Nobuyoshi Yagihashi; Tadayasu Dotani; Masanobu Ozaki; Takeshi Go Tsuru; Masaharu Muramatsu; Hisanori Suzuki; Shin'ichiro Takagi
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Paper Abstract

We report on the development of the X-ray CCD for the soft X-ray imager (SXI) onboard ASTRO-H. SXI CCDs are P-channel, back-illuminated type manufactured by Hamamatsu Photonics K. K. Experiments with prototype CCD for the SXI shows the device has a depletion layer as thick as 200μm, high efficiency for hard X-rays. By irradiating soft X-rays to the prototype CCD for the SXI. At the same time, we found a significant low energy tail in the soft X-ray response of the SXI prototype CCD. We thus made several small size CCD chips with different treatment in processing the surface layers. CCDs with one of the surface layers treatment show a low energy tail of which intensity is one order of magnitude smaller than that of the original SXI prototype CCD for 0.5keV X-ray incidence. The same treatment will be applied to the flight model CCDs of the SXI. We also performed experiments to inject charge with the SXI prototype CCD, which is needed to mitigate the radiation damage in the orbit. We investigated the operation conditions of the charge injection. Using the potential equilibration method, charges are injected in each column homogeneously, though the amount of the charge must be larger than 20ke-.

Paper Details

Date Published: 13 September 2011
PDF: 9 pages
Proc. SPIE 8145, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVII, 814504 (13 September 2011); doi: 10.1117/12.893348
Show Author Affiliations
Shutaro Ueda, Osaka Univ. (Japan)
Kiyoshi Hayashida, Osaka Univ. (Japan)
Hiroshi Nakajima, Osaka Univ. (Japan)
Naohisa Anabuki, Osaka Univ. (Japan)
Hiroyuki Uchida, Osaka Univ. (Japan)
Hiroshi Tsunemi, Osaka Univ. (Japan)
Mari Fujikawa, Osaka Univ. (Japan)
Hideki Mori, Osaka Univ. (Japan)
Takayoshi Kohmura, Kogakuin Univ. (Japan)
Tatsuo Watanabe, Kogakuin Univ. (Japan)
Kohei Kawai, Kogakuin Univ. (Japan)
Shoma Ikeda, Kogakuin Univ. (Japan)
Kenta Kaneko, Kogakuin Univ. (Japan)
Kazuya Sakata, Rikkyo Univ. (Japan)
Shotaro Todoroki, Rikkyo Univ. (Japan)
Hideki Mizuno, Rikkyo Univ. (Japan)
Nobuyoshi Yagihashi, Rikkyo Univ. (Japan)
Tadayasu Dotani, Japan Aerospace Exploration Agency (Japan)
Masanobu Ozaki, Japan Aerospace Exploration Agency (Japan)
Takeshi Go Tsuru, Kyoto Univ. (Japan)
Masaharu Muramatsu, Hamamatsu Photonics K.K. (Japan)
Hisanori Suzuki, Hamamatsu Photonics K.K. (Japan)
Shin'ichiro Takagi, Hamamatsu Photonics K.K. (Japan)


Published in SPIE Proceedings Vol. 8145:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVII
Oswald H. Siegmund, Editor(s)

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