Hard X-Ray Detector (HXD) on Board Suzaku

The Hard X-ray Detector (HXD) on board Suzaku covers a wide energy range from 10 keV to 600 keV by the combination of silicon PIN diodes and GSO scintillators. The HXD is designed to achieve an extremely low in-orbit background based on a combination of new techniques, including the concept of a wel...

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Bibliographic Details
Published in:	Publications of the Astronomical Society of Japan Vol. 59; no. sp1; pp. S35 - S51
Main Authors:	Takahashi, Tadayuki, Abe, Keiichi, Endo, Manabu, Endo, Yasuhiko, Ezoe, Yuuichiro, Fukazawa, Yasushi, Hamaya, Masahito, Hirakuri, Shinya, Hong, Soojing, Horii, Michihiro, Inoue, Hokuto, Isobe, Naoki, Itoh, Takeshi, Iyomoto, Naoko, Kamae, Tuneyoshi, Kasama, Daisuke, Kataoka, Jun, Kato, Hiroshi, Kawaharada, Madoka, Kawano, Naomi, Kawashima, Kengo, Kawasoe, Satoshi, Kishishita, Tetsuichi, Kitaguchi, Takao, Kobayashi, Yoshihito, Kokubun, Motohide, Kotoku, Jun’ichi, Kouda, Manabu, Kubota, Aya, Kuroda, Yoshikatsu, Madejski, Greg, Makishima, Kazuo, Masukawa, Kazunori, Matsumoto, Yukari, Mitani, Takefumi, Miyawaki, Ryohei, Mizuno, Tsunefumi, Mori, Kunishiro, Mori, Masanori, Murashima, Mio, Murakami, Toshio, Nakazawa, Kazuhiro, Niko, Hisako, Nomachi, Masaharu, Okada, Yuu, Ohno, Masanori, Oonuki, Kousuke, Ota, Naomi, Ozawa, Hideki, Sato, Goro, Shinoda, Shingo, Sugiho, Masahiko, Suzuki, Masaya, Taguchi, Koji, Takahashi, Hiromitsu, Takahashi, Isao, Takeda, Shin’ichiro, Tamura, Ken-ichi, Tamura, Takayuki, Tanaka, Takaaki, Tanihata, Chiharu, Tashiro, Makoto, Terada, Yukikatsu, Tominaga, Shin’ya, Uchiyama, Yasunobu, Watanabe, Shin, Yamaoka, Kazutaka, Yanagida, Takayuki, Yonetoku, Daisuke
Format:	Journal Article
Language:	English
Published:	Oxford, UK Oxford Universtiy Press 30-01-2007
Subjects:	instrumentation: detectors X-rays: general
Online Access:	Get full text
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Summary:	The Hard X-ray Detector (HXD) on board Suzaku covers a wide energy range from 10 keV to 600 keV by the combination of silicon PIN diodes and GSO scintillators. The HXD is designed to achieve an extremely low in-orbit background based on a combination of new techniques, including the concept of a well-type active shield counter. With an effective area of $142 \,\mathrm{cm}^{2}$ at 20 keV and $273 \,\mathrm{cm}^{2}$ at 150 keV, the background level at sea level reached $\sim 1 \times 10^{-5} \,\mathrm{cts} \,\mathrm{s}^{-1} \,\mathrm{cm}^{-2} \,\mathrm{keV}^{-1}$ at 30 keV for the PIN diodes, and $\sim 2 \times 10^{-5} \,\mathrm{cts} \,\mathrm{s}^{-1} \,\mathrm{cm}^{-2} \,\mathrm{keV}^{-1}$ at 100 keV, and $\sim 7 \times 10^{-6} \,\mathrm{cts} \,\mathrm{s}^{-1} \,\mathrm{cm}^{-2} \,\mathrm{keV}^{-1}$ 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 $\sim 4 \,\mathrm{cm}$ 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 ( $\sim 5^{\circ}$ ). The on-board signal-processing system and the data transmitted to the ground are also described.
ISSN:	0004-6264 2053-051X
DOI:	10.1093/pasj/59.sp1.S35