XIE Xufei (谢旭飞), YUAN Xi(袁熙), ZHANG Xing (张兴), FAN Tieshuan (樊铁栓), HEN Jinxiang(陈金象), LI Xiangqing(李湘庆). Calibration and Unfolding of the Pulse Height Spectra of Liquid Scintillator-Based Neutron Detectors using Photon Sources[J]. Plasma Science and Technology, 2012, 14(6): 553-557. DOI: 10.1088/1009-0630/14/6/27
Citation:
XIE Xufei (谢旭飞), YUAN Xi(袁熙), ZHANG Xing (张兴), FAN Tieshuan (樊铁栓), HEN Jinxiang(陈金象), LI Xiangqing(李湘庆). Calibration and Unfolding of the Pulse Height Spectra of Liquid Scintillator-Based Neutron Detectors using Photon Sources[J]. Plasma Science and Technology, 2012, 14(6): 553-557. DOI: 10.1088/1009-0630/14/6/27
XIE Xufei (谢旭飞), YUAN Xi(袁熙), ZHANG Xing (张兴), FAN Tieshuan (樊铁栓), HEN Jinxiang(陈金象), LI Xiangqing(李湘庆). Calibration and Unfolding of the Pulse Height Spectra of Liquid Scintillator-Based Neutron Detectors using Photon Sources[J]. Plasma Science and Technology, 2012, 14(6): 553-557. DOI: 10.1088/1009-0630/14/6/27
Citation:
XIE Xufei (谢旭飞), YUAN Xi(袁熙), ZHANG Xing (张兴), FAN Tieshuan (樊铁栓), HEN Jinxiang(陈金象), LI Xiangqing(李湘庆). Calibration and Unfolding of the Pulse Height Spectra of Liquid Scintillator-Based Neutron Detectors using Photon Sources[J]. Plasma Science and Technology, 2012, 14(6): 553-557. DOI: 10.1088/1009-0630/14/6/27
State Key Laboratory of Nuclear Physics and Technology and School of Physics, Peking University, Beijing 100871, China
Funds: Supported by the state Key Development program for Basic Research of China (Nos. 2008CB717803, 2009GB107001, and 2007CB209903), the Research Fund for the Doctoral Program of Higher Education of China ( No. 200610011023) and the National Natural Science Foundation of China (No. 10875002)
The accurate energy calibration of a 5×2" BC501A liquid scintillator-based neutron detector by means of photon sources and the unfolding of pulse height spectra is described. The photon responses were measured with 22Na, 137Cs and 54Mn photon sources and simulated using the GRESP code, which was developed at the Physikalisch Technische Bundesanstalt in Germany. Pulse height spectra produced by three different photon sources were employed to investigate the effects of the unfolding techniques. It was found that the four unfolding codes of the HEPRO and UMG3.3 packages, including GRAVEL, UNFANA, MIEKE and MAXED, performed well with the test spectra and produced generally consistent results. They could therefore be used to obtain neutron energy spectra in Tokamak experiments.
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