1. Hard X-ray Detector (HXD) on Board Suzaku
- Author
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Takahashi, T., Abe, K., Endo, M., Endo, Y., Ezoe, Y., Fukazawa, Y., Hamaya, M., Hirakuri, S., Hong, S., Horii, M., Inoue, H., Isobe, N., Itoh, T., Iyomoto, N., Kamae, T., Kasama, D., Kataoka, J., Kato, H., Kawaharada, M., Kawano, N., Kawashima, K., Kawasoe, S., Kishishita, T., Kitaguchi, T., Kobayashi, Y., Kokubun, M., Kotoku, J., Kouda, M., Kubota, A., Kuroda, Y., Madejski, G., Makishima, K., Masukawa, K., Matsumoto, Y., Mitani, T., Miyawaki, R., Mizuno, T., Mori, K., Mori, M., Murashima, M., Murakami, T., Nakazawa, K., Niko, H., Nomachi, M., Okada, Y., Ohno, M., Oonuki, K., Ota, N., Ozawa, H., Sato, G., Shinoda, S., Sugiho, M., Suzuki, M., Taguchi, K., Takahashi, H., Takahashi, I., Takeda, S., Tamura, K., Tamura, T., Tanaka, T., Tanihata, C., Tashiro, M., Terada, Y., Tominaga, S., Uchiyama, Y., Watanabe, S., Yamaoka, K., Yanagida, T., and Yonetoku, D.
- Subjects
Astrophysics - Abstract
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., Comment: 35 pages, 25 figures and 4 tables; acceted for Publication of the Astronomical Society of Japan
- Published
- 2006
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