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Proceedings Paper

In-orbit performance of the GIS instrument on board ASCA (ASTRO-D)
Author(s): Makoto Tashiro; Kazuo Makishima; Hajime Ezawa; Yasushi Fukazawa; Eriko Idesawa; Yoshitaka Ishisaki; Naoko Iyomoto; Tuneyoshi Kamae; Hidehiro Kaneda; Kyoko Matsushita; Keiichi Matsuzaki; Yoshitaka Saito; Yutaro Sekimoto; Takayuki Tamura; Masaharu Hirayama; Manabu Ishida; Hidetoshi Kubo; Kyoko Okada; Tadayuki Takahashi; Yoshihiro Ueda; Koichi Kikuchi; Takaya Ohashi; Noriko Y. Yamasaki; Yoshiki Kohmura; Yasushi Ikebe; Tatehiro Mihara; Takeshi G. Tsuru; K. Ebisawa; Shuichi Gunji
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Paper Abstract

The fourth Japanese x-ray astronomy satellite, ASCA, carries two imaging gas scintillation proportional counters (GIS) on its focal plane. Extensive ground calibration has established its position resolution to be 0.5 mm and FWHM energy resolution to be 8.0% both at 6 keV. When combined with the x-ray telescope, a sensitivity range becomes 0.7 - 10 keV. These properties have been confirmed through in-orbit calibrations. The in-orbit background of the GIS has been confirmed to be as low as (5 - 7) X 10-4 c s-1cm-2keV-1 over the 1 - 10 keV range. The long-term detector gain is stable within a few % for two years. Gain dependence on the position and temperature has been calibrated down to 1%. The overall energy response is calibrated very accurately. Thus the GIS is working as an all-round cosmic x-ray detector.

Paper Details

Date Published: 1 September 1995
PDF: 11 pages
Proc. SPIE 2518, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI, (1 September 1995); doi: 10.1117/12.218370
Show Author Affiliations
Makoto Tashiro, Univ. of Tokyo (Japan)
Kazuo Makishima, Univ. of Tokyo (Japan)
Hajime Ezawa, Univ. of Tokyo (Japan)
Yasushi Fukazawa, Univ. of Tokyo (Japan)
Eriko Idesawa, Univ. of Tokyo (Japan)
Yoshitaka Ishisaki, Univ. of Tokyo (Japan)
Naoko Iyomoto, Univ. of Tokyo (Japan)
Tuneyoshi Kamae, Univ. of Tokyo (Japan)
Hidehiro Kaneda, Univ. of Tokyo (Japan)
Kyoko Matsushita, Univ. of Tokyo (Japan)
Keiichi Matsuzaki, Univ. of Tokyo (Japan)
Yoshitaka Saito, Univ. of Tokyo (Japan)
Yutaro Sekimoto, Univ. of Tokyo (Japan)
Takayuki Tamura, Univ. of Tokyo (Japan)
Masaharu Hirayama, Institute of Space and Astronautical Science (Japan)
Manabu Ishida, Institute of Space and Astronautical Science (Japan)
Hidetoshi Kubo, Institute of Space and Astronautical Science (Japan)
Kyoko Okada, Institute of Space and Astronautical Science (Japan)
Tadayuki Takahashi, Institute of Space and Astronautical Science (Japan)
Yoshihiro Ueda, Institute of Space and Astronautical Science (Japan)
Koichi Kikuchi, Tokyo Metropolitan Univ. (Japan)
Takaya Ohashi, Tokyo Metropolitan Univ. (Japan)
Noriko Y. Yamasaki, Tokyo Metropolitan Univ. (Japan)
Yoshiki Kohmura, Institute of Physical and Chemical Research (Japan)
Yasushi Ikebe, Institute of Physical and Chemical Research (Japan)
Tatehiro Mihara, Institute of Physical and Chemical Research (Japan)
Takeshi G. Tsuru, Kyoto Univ. (Japan)
K. Ebisawa, NASA Goddard Space Flight Ctr. (United States)
Shuichi Gunji, Yamagata Univ. (Japan)


Published in SPIE Proceedings Vol. 2518:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI
Oswald H. W. Siegmund; John V. Vallerga, Editor(s)

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