Portal de Periódicos da CAPES

Hard X-Ray Detector (HXD) on Board Suzaku

2007; Oxford University Press; Volume: 59; Issue: sp1 Linguagem: Inglês

10.1093/pasj/59.sp1.s35

2053-051X

Tadayuki Takahashi, Keiichi Abe, Manabu Endo, Yasuhiko Endo, Y. Ezoe, Yasushi Fukazawa, M. Hamaya, Shinya Hirakuri, S. Hong, Michihiro Horii, Hokuto Inoue, Naoki Isobe, Takeshi Itoh, Naoko Iyomoto, T. Kamae, Daisuke Kasama, J. Kataoka, Hiroshi Kato, Madoka Kawaharada, Naomi Kawano, Keigo Kawashima, S. Kawasoe, T. Kishishita, Takao Kitaguchi, Y. Kobayashi, M. Kokubun, J. Kotoku, M. Kouda, Aya Kubota, Yoshikatsu Kuroda, G. M. Madejski, Kazuo Makishima, Kazunori Masukawa, Y Matsumoto, Takefumi Mitani, Ryohei Miyawaki, Tsunefumi Mizuno, Kunishiro Mori, Masanori Mori, M. Murashima, Toshio Murakami, K. Nakazawa, Chiharu Sako, Masaharu Nomachi, Y. Okada, M. Ohno, Kousuke Oonuki, Naomi Ota, Hideki Ozawa, Goro Sato, S. Shinoda, Masahiko Sugiho, Masaya Suzuki, Koji Taguchi, H. Takahashi, Isao Takahashi, Shin׳ichiro Takeda, Ken‐ichi Tamura, Takayuki Tamura, T. Tanaka, C. Tanihata, M. Tashiro, Y. Terada, Shinya Tominaga, Y. Uchiyama, Shin Watanabe, K. Yamaoka, Takayuki Yanagida, Daisuke Yonetoku,

Nuclear Physics and Applications

The Hard X-ray Detector (HXD) on board Suzaku covers a wide energy range from 10 keV to 600 keV by combination of silicon PIN diodes and GSO scintillators. The HXD is designed to achieve an extremely low in-orbit back ground based on a combination of new techniques, including the concept of well-type active shield counter. With an effective area of 142 cm^2 at 20 keV and 273 cm2 at 150 keV, the background level at the sea level reached ~1x10^{-5} cts s^{-1} cm^{-2} keV^{-1} at 30 keV for the PI N diodes, and ~2x10^{-5} cts s^{-1} cm^{-2} keV^{-1} at 100 keV, and ~7x10^{-6} cts s^{-1} cm^{-2} keV^{-1} at 200 keV for the phoswich counter. Tight active shielding of the HXD results in a large array of guard counters surrounding the main detector parts. These anti-coincidence counters, made of ~4 cm thick BGO crystals, have a large effective area for sub-MeV to MeV gamma-rays. They work as an excellent gamma-ray burst monitor with limited angular resolution (~5 degree). The on-board signal-processing system and the data transmitted to the ground are also described.