Activation of the ASTRO-E hard X-ray detector in low Earth orbit

M. Kokubun; Y. Fukazawa; E. Idesawa; J. Kataoka; T. Kamae; K. Matsuzaki; T. Mizuno; Y. Saito; T. Takahashi; K. Takizawa; M. Tashiro; T. Tamura; A. Yoshida

Activation of the ASTRO-E hard X-ray detector in low Earth orbit

M. Kokubun^*, Y. Fukazawa, E. Idesawa, J. Kataoka, T. Kamae, K. Matsuzaki, T. Mizuno, Y. Saito, T. Takahashi, K. Takizawa, M. Tashiro, T. Tamura, A. Yoshida

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

ASTRO-E Hard X-ray Detector (HXD) is characterized by well-type phoswich counters in a compound-eye configuration which reduce the X-ray and non X-ray background to lower level than any other past hard X-ray missions. When operating in Low Earth Orbit, the expected background of the HXD is an order of 10^-5[counts/s/keV/cm²], mainly caused from the radioactivity induced within the detector materials by nuclear interactions with geomagnetically trapped protons. Results are presented from measurements of induced radioactivity in two phoswich scintillators, GSO and BGO, irradiated by mono-energetic protons at an accelerator facility. Radiation transport computer codes are used to build the detector response functions against emissions from decays of spallation products. Based on the comparison of experimental and simulation results, the activation background level of HXD in the orbit is estimated.

Original language	English
Title of host publication	IEEE Nuclear Science Symposium and Medical Imaging Conference
Publisher	IEEE
Pages	227-232
Number of pages	6
ISBN (Print)	0780350227
Publication status	Published - 1999
Externally published	Yes
Event	Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record - Toronto, Que, Can Duration: 1998 Nov 8 → 1998 Nov 14

Publication series

Name	IEEE Nuclear Science Symposium and Medical Imaging Conference
Volume	1

Other

Other	Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record
City	Toronto, Que, Can
Period	98/11/8 → 98/11/14

ASJC Scopus subject areas

Radiation
Nuclear and High Energy Physics
Radiology Nuclear Medicine and imaging

Cite this

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. (1999). Activation of the ASTRO-E hard X-ray detector in low Earth orbit. In IEEE Nuclear Science Symposium and Medical Imaging Conference (pp. 227-232). (IEEE Nuclear Science Symposium and Medical Imaging Conference; Vol. 1). IEEE.

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 1999, Activation of the ASTRO-E hard X-ray detector in low Earth orbit. in IEEE Nuclear Science Symposium and Medical Imaging Conference. IEEE Nuclear Science Symposium and Medical Imaging Conference, vol. 1, IEEE, pp. 227-232, Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record, Toronto, Que, Can, 98/11/8.

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title = "Activation of the ASTRO-E hard X-ray detector in low Earth orbit",

abstract = "ASTRO-E Hard X-ray Detector (HXD) is characterized by well-type phoswich counters in a compound-eye configuration which reduce the X-ray and non X-ray background to lower level than any other past hard X-ray missions. When operating in Low Earth Orbit, the expected background of the HXD is an order of 10-5[counts/s/keV/cm2], mainly caused from the radioactivity induced within the detector materials by nuclear interactions with geomagnetically trapped protons. Results are presented from measurements of induced radioactivity in two phoswich scintillators, GSO and BGO, irradiated by mono-energetic protons at an accelerator facility. Radiation transport computer codes are used to build the detector response functions against emissions from decays of spallation products. Based on the comparison of experimental and simulation results, the activation background level of HXD in the orbit is estimated.",

author = "M. Kokubun and Y. Fukazawa and E. Idesawa and J. Kataoka and T. Kamae and K. Matsuzaki and T. Mizuno and Y. Saito and T. Takahashi and K. Takizawa and M. Tashiro and T. Tamura and A. Yoshida",

note = "Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.; Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record ; Conference date: 08-11-1998 Through 14-11-1998",

year = "1999",

language = "English",

isbn = "0780350227",

series = "IEEE Nuclear Science Symposium and Medical Imaging Conference",

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T1 - Activation of the ASTRO-E hard X-ray detector in low Earth orbit

AU - Kokubun, M.

AU - Fukazawa, Y.

AU - Idesawa, E.

AU - Kataoka, J.

AU - Kamae, T.

AU - Matsuzaki, K.

AU - Mizuno, T.

AU - Saito, Y.

AU - Takahashi, T.

AU - Takizawa, K.

AU - Tashiro, M.

AU - Tamura, T.

AU - Yoshida, A.

PY - 1999

Y1 - 1999

N2 - ASTRO-E Hard X-ray Detector (HXD) is characterized by well-type phoswich counters in a compound-eye configuration which reduce the X-ray and non X-ray background to lower level than any other past hard X-ray missions. When operating in Low Earth Orbit, the expected background of the HXD is an order of 10-5[counts/s/keV/cm2], mainly caused from the radioactivity induced within the detector materials by nuclear interactions with geomagnetically trapped protons. Results are presented from measurements of induced radioactivity in two phoswich scintillators, GSO and BGO, irradiated by mono-energetic protons at an accelerator facility. Radiation transport computer codes are used to build the detector response functions against emissions from decays of spallation products. Based on the comparison of experimental and simulation results, the activation background level of HXD in the orbit is estimated.

AB - ASTRO-E Hard X-ray Detector (HXD) is characterized by well-type phoswich counters in a compound-eye configuration which reduce the X-ray and non X-ray background to lower level than any other past hard X-ray missions. When operating in Low Earth Orbit, the expected background of the HXD is an order of 10-5[counts/s/keV/cm2], mainly caused from the radioactivity induced within the detector materials by nuclear interactions with geomagnetically trapped protons. Results are presented from measurements of induced radioactivity in two phoswich scintillators, GSO and BGO, irradiated by mono-energetic protons at an accelerator facility. Radiation transport computer codes are used to build the detector response functions against emissions from decays of spallation products. Based on the comparison of experimental and simulation results, the activation background level of HXD in the orbit is estimated.

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M3 - Conference contribution

AN - SCOPUS:0032597258

SN - 0780350227

T3 - IEEE Nuclear Science Symposium and Medical Imaging Conference

SP - 227

EP - 232

BT - IEEE Nuclear Science Symposium and Medical Imaging Conference

PB - IEEE

T2 - Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record

Y2 - 8 November 1998 through 14 November 1998

ER -

Activation of the ASTRO-E hard X-ray detector in low Earth orbit

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