Gamma-Ray Spectrometer of high purity germanium detector cooled by the stirling cycle cryostat in the lunar mission SELENE

M. N. Kobayashi; Nobuyuki Hasebe; T. Miyachi; A. Oka; N. Yamashita; E. Shibamura; K. Narasaki; K. Tsurumi; T. Yamamoto; K. Sakai; K. Mori; C. D'Uston; H. Barthe

Gamma-Ray Spectrometer of high purity germanium detector cooled by the stirling cycle cryostat in the lunar mission SELENE

M. N. Kobayashi^*, Nobuyuki Hasebe, T. Miyachi, A. Oka, N. Yamashita, E. Shibamura, K. Narasaki, K. Tsurumi, T. Yamamoto, K. Sakai, K. Mori, C. D'Uston, H. Barthe

^*Corresponding author for this work

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

Abstract

The Gamma Ray Spectrometer (GRS) will be onboard the Japanese lunar polar orbiter SELENE, to be launched in 2004, to obtain the information of element abundance on the entire lunar surface. GRS consists of a high-purity Ge detector as a main detector, which is an n-type Ge crystal with a high detection efficiency of 60 % encapsulated in an aluminum canister. In addition, BGO and plastic scintillators are employed for an anti-coincidence shield and for suppression of Compton photons and energetic ion backgrounds. GRS will be the first gamma ray spectrometer employing a Ge detector for the lunar mission. GRS adopted a Stirling cycle refrigerator, whose cooling capacity is 2.0 W at 80 K. The mechanical vibration from the cryosystem to the Ge detector is effectively reduced by the dual opposed pistons in the compressor and the flexible thermo-coupling link between the two components. An excellent energy resolution of < 3 keV at 1.33 MeV has been achieved in the prototype- model of GRS.

Original language	English
Title of host publication	IEEE Nuclear Science Symposium and Medical Imaging Conference
Editors	D. Merelli, J. Surget, M. Ulma
Volume	1
Publication status	Published - 2000
Event	2000 IEEE Nuclear Science Symposium Conference Record - Lyon Duration: 2000 Oct 15 → 2000 Oct 20

Other

Other	2000 IEEE Nuclear Science Symposium Conference Record
City	Lyon
Period	00/10/15 → 00/10/20

ASJC Scopus subject areas

Computer Vision and Pattern Recognition
Industrial and Manufacturing Engineering

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Kobayashi, M. N., Hasebe, N., Miyachi, T., Oka, A., Yamashita, N., Shibamura, E., Narasaki, K., Tsurumi, K., Yamamoto, T., Sakai, K., Mori, K., D'Uston, C., & Barthe, H. (2000). Gamma-Ray Spectrometer of high purity germanium detector cooled by the stirling cycle cryostat in the lunar mission SELENE. In D. Merelli, J. Surget, & M. Ulma (Eds.), IEEE Nuclear Science Symposium and Medical Imaging Conference (Vol. 1)

Gamma-Ray Spectrometer of high purity germanium detector cooled by the stirling cycle cryostat in the lunar mission SELENE. / Kobayashi, M. N.; Hasebe, Nobuyuki; Miyachi, T. et al.
IEEE Nuclear Science Symposium and Medical Imaging Conference. ed. / D. Merelli; J. Surget; M. Ulma. Vol. 1 2000.

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

Kobayashi, MN, Hasebe, N, Miyachi, T, Oka, A, Yamashita, N, Shibamura, E, Narasaki, K, Tsurumi, K, Yamamoto, T, Sakai, K, Mori, K, D'Uston, C & Barthe, H 2000, Gamma-Ray Spectrometer of high purity germanium detector cooled by the stirling cycle cryostat in the lunar mission SELENE. in D Merelli, J Surget & M Ulma (eds), IEEE Nuclear Science Symposium and Medical Imaging Conference. vol. 1, 2000 IEEE Nuclear Science Symposium Conference Record, Lyon, 00/10/15.

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abstract = "The Gamma Ray Spectrometer (GRS) will be onboard the Japanese lunar polar orbiter SELENE, to be launched in 2004, to obtain the information of element abundance on the entire lunar surface. GRS consists of a high-purity Ge detector as a main detector, which is an n-type Ge crystal with a high detection efficiency of 60 % encapsulated in an aluminum canister. In addition, BGO and plastic scintillators are employed for an anti-coincidence shield and for suppression of Compton photons and energetic ion backgrounds. GRS will be the first gamma ray spectrometer employing a Ge detector for the lunar mission. GRS adopted a Stirling cycle refrigerator, whose cooling capacity is 2.0 W at 80 K. The mechanical vibration from the cryosystem to the Ge detector is effectively reduced by the dual opposed pistons in the compressor and the flexible thermo-coupling link between the two components. An excellent energy resolution of < 3 keV at 1.33 MeV has been achieved in the prototype- model of GRS.",

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AU - Oka, A.

AU - Yamashita, N.

AU - Shibamura, E.

AU - Narasaki, K.

AU - Tsurumi, K.

AU - Yamamoto, T.

AU - Sakai, K.

AU - Mori, K.

AU - D'Uston, C.

AU - Barthe, H.

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AB - The Gamma Ray Spectrometer (GRS) will be onboard the Japanese lunar polar orbiter SELENE, to be launched in 2004, to obtain the information of element abundance on the entire lunar surface. GRS consists of a high-purity Ge detector as a main detector, which is an n-type Ge crystal with a high detection efficiency of 60 % encapsulated in an aluminum canister. In addition, BGO and plastic scintillators are employed for an anti-coincidence shield and for suppression of Compton photons and energetic ion backgrounds. GRS will be the first gamma ray spectrometer employing a Ge detector for the lunar mission. GRS adopted a Stirling cycle refrigerator, whose cooling capacity is 2.0 W at 80 K. The mechanical vibration from the cryosystem to the Ge detector is effectively reduced by the dual opposed pistons in the compressor and the flexible thermo-coupling link between the two components. An excellent energy resolution of < 3 keV at 1.33 MeV has been achieved in the prototype- model of GRS.

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BT - IEEE Nuclear Science Symposium and Medical Imaging Conference

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ER -

Gamma-Ray Spectrometer of high purity germanium detector cooled by the stirling cycle cryostat in the lunar mission SELENE

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