Activation of the ASTRO-E hard x-ray detector in low earth orbit

被引：28

作者：

Kokubun, M

Fukazawa, Y

Idesawa, E

Kataoka, J

Kamae, T

Matsuzaki, K

Mizuno, T

Saito, Y

Takahashi, T

Takizawa, K

Tashiro, M

Tamura, T

Yoshida, A

机构：

[1] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[2] Univ Tokyo, Res Ctr Early Universe, Tokyo, Japan

[3] Inst Space & Astronaut Sci, Kanagawa 2298510, Japan

[4] Waseda Univ, Adv Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan

[5] Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1999年 / 46卷 / 03期

关键词：

D O I：

10.1109/23.775546

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

ASTRO-E Hard X-ray Detector (HXD) is characterized by well-type phoswich counters[1] in a compound-eye configuration which reduce the detector background to lower level than any other past hard X-ray mission. When operating in Low Earth Orbit, the expected background of the HXD is an order of 10(-5) counts/s/kev/cm(2), mainly caused from the radioactivity induced within the detector materials by geomagnetically trapped protons. Results are presented from measurements of induced radioactivity in two phoswich scintillators, GSO (Gd2SiO5:Ce 0.5% mol) and EGO (Bi4Ge3O12), irradiated by mono-energetic protons at an accelerator facility. Radiation transport computer codes are used to build the detector response functions for emissions from decays of spallation products. Based on the comparison between experimental and simulation results, the activation background level of HXD in the orbit is estimated.

引用

页码：371 / 376

页数：6

共 50 条

[1] Activation of the ASTRO-E hard X-ray detector in low earth orbit
Kokubun, M.
Fukazawa, Y.
Idesawa, E.
Kataoka, J.
Kamae, T.
Matsuzaki, K.
Mizuno, T.
Saito, Y.
Takahashi, T.
Takizawa, K.
Tashiro, M.
Tamura, T.
Yoshida, A.
IEEE Transactions on Nuclear Science, 1999, 46 (3 I): : 371 - 376
[2] Astro-E hard X-ray detector
Kamae, T
Ezawa, H
Fukazawa, Y
Hirayama, M
Idesawa, E
Iyomoto, N
Kaneda, H
Kawaguti, G
Kokubun, M
Kubo, H
Kubota, A
Matsushita, K
Matsuzaki, K
Matishima, K
Mizuno, T
Nakazawa, K
Osone, S
Obayashi, H
Saito, Y
Tamura, T
Tanaka, M
Tashiro, M
Kataoka, J
Murakami, T
Ota, N
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Sugizaki, M
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[3] Fabrication of the ASTRO-E Hard X-ray Detector
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Kubota, A
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[4] Performance of the ASTRO-E hard X-ray detector
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Nakazawa, K
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Yoshida, A
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Isobe, N
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Fukazawa, Y
Isobe, N
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Kotoku, J
Kubota, A
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Matsumoto, Y
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Yoshida, A
Ezoe, Y
Isobe, N
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Kouda, M
Kubo, S
Kubota, A
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Ota, N
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[8] Development of the hard X-ray detector for the ASTRO-E mission
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Ezawa, H
Fukazawa, Y
Hirayama, M
Idesawa, E
Ikeda, H
Ishisaki, Y
Iyomoto, N
Kamae, T
Kataoka, J
Kaneda, H
Kubo, H
Makishima, K
Matsushita, K
Matsuzaki, K
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