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Development and qualification of the HXD-II onboard Astro-E2

2004; SPIE; Volume: 5501; Linguagem: Inglês

10.1117/12.551051

1996-756X

Madoka Kawaharada, S. Hong, M. Murashima, M. Kokubun, Takeshi Itoh, Kazuo Makishima, Ryouhei Miyawaki, Chiharu Sako, Takayuki Yanagida, Takefumi Mitani, K. Nakazawa, Kousuke Oonuki, Tadayuki Takahashi, Ken‐ichi Tamura, T. Tanaka, Y. Terada, Yasushi Fukazawa, Naomi Kawano, Keigo Kawashima, M. Ohno, K. Yamaoka, Keiichi Abe, Masaya Suzuki, M. Tashiro, Daisuke Yonetoku, Toshio Murakami,

Advanced X-ray and CT Imaging

The Hard X-ray Detector (HXD-II), one of instruments onboard the Astro-E 2 satellite to be launched in February 2005, is in the final stage of its development. The HXD-II probes the universe in the energy range of 10-600 keV with a sensitivity by an order of magnitude better than those of previous missions. The assembly of the HXD-II completed in January 2004, followed by a series of pre-launch qualification tests. As a result, the design goals of the HXD-II have been met. These include; a background level of 5 x 10 -6 counts/s/keV/cm 2 at 200 keV for GSO and 1 x 10 -5 counts/s/keV/cm 2 at 30 keV for PIN; energy resolutions of 2.9 keV (PIN diode, at 59.5 keV) and 10% (GSO scintillator, at 662 keV); and low energy thresholds of 10 keV for PIN diodes and 30 keV for GSO scintillators. The measured background predicts a continuum sensitivity of a few x 10 -6 photons/s/keV/cm 2 . Anti-Counter units surrounding the HXD-II provide 50 keV-5 MeV information on gamma-ray bursts and bright X-ray transients.