Effects due to a Pu-C source on a HPGe detector and the corresponding neutron shielding

ZHANG Jian-Yong; FU Cheng-Dong; MO Xiao-Hu; ZHANG Zi-Liang; LI Dao-Wu; WANG Bao-Yi

doi:10.1088/1674-1137/35/7/011

Chinese Physics C> 2011, Vol. 35> Issue(7) : 660-667 DOI: 10.1088/1674-1137/35/7/011

Effects due to a Pu-C source on a HPGe detector and the corresponding neutron shielding

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A gamma spectrum of a Pu-C source is measured using a p-type HPGe detector, whose three peaks (full energy, single-escape and double-escape peak) can be used as a calibration source for the beam energy measurement system of BEPCII. The effect of fast neutron damage on the energy resolution of the HPGe detector is studied, which indicates that the energy resolution begins to deteriorate when the detector is subject to 2×10⁷ n/cm² fastneutrons. The neutron damage mechanism and detector repair methods are reviewed. The Monte Carlo simulation technique is utilized to study the shielding of the HPGe detector from the fast neutron radiation damage, which is of great significance for the future commissioning of the beam energy measurement system.

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ZHANG Jian-Yong, FU Cheng-Dong, MO Xiao-Hu, ZHANG Zi-Liang, LI Dao-Wu and WANG Bao-Yi. Effects due to a Pu-C source on a HPGe detector and the corresponding neutron shielding[J]. Chinese Physics C, 2011, 35(7): 660-667. doi: 10.1088/1674-1137/35/7/011

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Received: 2010-09-08
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Effects due to a Pu-C source on a HPGe detector and the corresponding neutron shielding

Received Date: 2010-09-08

Accepted Date: 2010-11-09

Available Online: 2011-07-05

Abstract: A gamma spectrum of a Pu-C source is measured using a p-type HPGe detector, whose three peaks (full energy, single-escape and double-escape peak) can be used as a calibration source for the beam energy measurement system of BEPCII. The effect of fast neutron damage on the energy resolution of the HPGe detector is studied, which indicates that the energy resolution begins to deteriorate when the detector is subject to 2×10⁷ n/cm² fastneutrons. The neutron damage mechanism and detector repair methods are reviewed. The Monte Carlo simulation technique is utilized to study the shielding of the HPGe detector from the fast neutron radiation damage, which is of great significance for the future commissioning of the beam energy measurement system.

Effects due to a Pu-C source on a HPGe detector and the corresponding neutron shielding

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Effects due to a Pu-C source on a HPGe detector and the corresponding neutron shielding

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