The Hard X-ray Imager (HXI) for the ASTRO-H Mission

G Sato ,Madoka Kawaharada,Kunishiro Mori,Takeshi Nakamori,Atsushi Harayama,Hirokazu Odaka,Hirofumi Noda,Yasushi Fukazawa,Hideki Uchiyama,Shin Watanabe,Rie Sato,Takayuki Yuasa,Kazuo Makishima,Yoichi Yatsu,Philippe Laurent,Shinya Saito,Shin׳Ichiro Takeda ,J Kataoka ,T Mizuno ,Katsuhiro Hayashi,M Kokubun ,F Lebrun ,H Tajima ,H Takahashi ,M Ohta ,Y Uchiyama ,T Enoto ,O Limousin ,K Nakazawa ,Y Terada ,M Ohno ,K Yamaoka ,J Katsuta

doi:10.1117/12.2055629

The Hard X-ray Imager (HXI) for the ASTRO-H Mission

G Sato , Madoka Kawaharada + Show 31 more

https://doi.org/10.1117/12.2055629

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Publication Date: Jul 31, 2014

Citations: 10

Affiliation: Waseda University, Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science, Yamagata University, Nitto RIKEN (Japan), Hiroshima University, The University of Tokyo, Institut de Recherche sur les Lois Fondamentales de l'Univers, Atomic Energy and Alternative Energies Commission, Nagoya University, Saitama University

#Hard X-ray Imager #Hard X-ray Telescope + Show 8 more

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Abstract

The 6th Japanese X-ray satellite, ASTRO-H, is scheduled for launch in 2015. The hard X-ray focusing imaging system will observe astronomical objects with the sensitivity for detecting point sources with a brightness of 1/100,000 times fainter than the Crab nebula at > 10 keV. The Hard X-ray Imager (HXI) is a focal plane detector 12 m below the hard X-ray telescope (HXT) covering the energy range from 5 to 80 keV. The HXI is composed of a stacked Si/CdTe semiconductor detector module and surrounding BGO scintillators. The latter work as active shields for efficient reduction of background events caused by cosmic-ray particles, cosmic X-ray background, and in-orbit radiation activation. In this paper, we describe the detector system, and present current status of flight model development, and performance of HXI using an engineering model of HXI.

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