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Proceedings Paper

Hard x-ray imager for the NeXT mission
Author(s): Kazuhiro Nakazawa; Yasushi Fukazawa; Tuneyoshi Kamae; Jun Kataoka; Motohide Kokubun; Kazuo Makishima; Tsunefumi Mizuno; Toshio Murakami; Masaharu Nomachi; Hiroyasu Tajima; Tadayuki Takahashi; Makoto Tashiro; Toru Tamagawa; Yukikatsu Terada; Shin Watanabe; Kazutaka Yamaoka; Daisuke Yonetoku
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Paper Abstract

The hard X-ray imager (HXI) is the primary detector of the NeXT mission, proposed to explore high-energy non-thermal phenomena in the universe. Combined with a novel hard X-ray mirror optics, the HXI is designed to provide better than arc-minutes imaging capability with 1 keV level spectroscopy, and more than 30 times higher sensitivity compared with any existing hard X-ray instruments. The base-line design of the HXI is improving to secure high sensitivity. The key is to reduce the detector background as far as possible. Based on the experience of the Suzaku satellite launched in July 2005, the current design has a well-type tight active shield and multi layered, multi material imaging detector made of Si and CdTe. Technology has been under development for a few years so that we have reached the level where a basic detector performance is satisfied. Design tuning to further improve the sensitivity and reliability is on-going.

Paper Details

Date Published: 15 June 2006
PDF: 10 pages
Proc. SPIE 6266, Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray, 62662H (15 June 2006); doi: 10.1117/12.670674
Show Author Affiliations
Kazuhiro Nakazawa, Institute of Space and Astronautical Science, JAXA (Japan)
Yasushi Fukazawa, Hiroshima Univ. (Japan)
Tuneyoshi Kamae, Stanford Linear Accelerator Ctr. (United States)
Jun Kataoka, Tokyo Institute of Technology (Japan)
Motohide Kokubun, Univ. of Tokyo (Japan)
Kazuo Makishima, Univ. of Tokyo (Japan)
RIKEN (Japan)
Tsunefumi Mizuno, Hiroshima Univ. (Japan)
Toshio Murakami, Kanazawa Univ. (Japan)
Masaharu Nomachi, Osaka Univ. (Japan)
Hiroyasu Tajima, Stanford Linear Accelerator Ctr. (United States)
Tadayuki Takahashi, Institute of Space and Astronautical Science, JAXA (Japan)
Univ. of Tokyo (Japan)
Makoto Tashiro, Saitama Univ. (Japan)
Toru Tamagawa, Stanford Linear Accelerator Ctr. (United States)
Yukikatsu Terada, RIKEN (Japan)
Shin Watanabe, Institute of Space and Astronautical Science, JAXA (Japan)
Kazutaka Yamaoka, Aoyama Gakuin Univ. (Japan)
Daisuke Yonetoku, Kanazawa Univ. (Japan)


Published in SPIE Proceedings Vol. 6266:
Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray
Martin J. L. Turner; Günther Hasinger, Editor(s)

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