Development of the HXD-II wide-band all-sky monitor onboard Astro-E2

K. Yamaoka*, M. Ohno, Y. Terada, S. Hong, J. Kotoku, Y. Okada, A. Tsutsui, Y. Endo, K. Abe, Y. Fukazawa, S. Hirakuri, T. Hiruta, K. Itoh, T. Itoh, T. Kamae, M. Kawaharada, N. Kawano, K. Kawashima, T. Kishishita, T. KitaguchiM. Kokubun, G. M. Madejski, K. Makishima, T. Mitani, R. Miyawaki, T. Murakami, M. M. Murashima, K. Nakazawa, H. Niko, M. Nomachi, K. Oonuki, G. Sato, M. Suzuki, H. Takahashi, I. Takahashi, T. Takahashi, S. Takeda, K. Tamura, T. Tanaka, M. Tashiro, S. Watanabe, T. Yanagida, D. Yonetoku


研究成果: Article査読

91 被引用数 (Scopus)


The hard X-ray detector (HXD-II) is one of the three scientific instruments onboard Japanese X-ray astronomy satellite Astro-E2 scheduled to be launched in 2005. This mission is very unique in a point of having a lower background than any other past missions in the 10-600 keV range. In the HXD-II, the large and thick BGO crystals are used as active shields for particle and gamma-ray background to the main detector. They have a wide field of view of ∼2π and a large effective area of 400 cm2 even at 1 MeV. Hence, the BGO shields have been developed as a wide-band all-sky monitor (WAM) with a broadband coverage of 50-5000 keV. In this paper, overall design and performance of the HXD-II/WAM based on the results of preflight calibration tests carried out in June 2004 are described. By irradiating various radio isotopes with the WAM flight model, we verified that it had comparable capabilities with other gamma-ray burst detectors.

ジャーナルIEEE Transactions on Nuclear Science
出版ステータスPublished - 2005 12月

ASJC Scopus subject areas

  • 電子工学および電気工学
  • 原子力エネルギーおよび原子力工学


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