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Comparison of Experiment and Simulation of the triple GEM-Based Fast Neutron Detector
Wang, XD; Zhang, JW; Hu, BT; Yang, HR; Duan, LM; Lu, CG; Hu, RJ; Zhang, CH; Zhou, JR; Yang, L; An, LX; Luo, W; Zhou JR(周健荣)
2015
发表期刊CHINESE PHYSICS LETTERS
卷号32期号:3页码:32901
摘要A detector for fast neutrons based on a 10 x 10 cm(2) triple gas electron multiplier (GEM) device is developed and tested. A neutron converter, which is a high density polyethylene (HDPE) layer, is combined with the triple GEM detector cathode and placed inside the detector, in the path of the incident neutrons. The detector is tested by obtaining the energy deposition spectrum with an Am Be neutron source in the Institute of Modern Physics (IMP) at Lanzhou. In the present work we report the results of the tests and compare them with those of simulations. The transport of fast neutrons and their interactions with the different materials in the detector are simulated with the GEANT4 code, to understand the experimental results. The detector displays a clear response to the incident fast neutrons. However, an unexpected disagreement in the energy dependence of the response between the simulated and measured spectra is observed. The neutron sources used in our simulation include deuterium-tritium (DT, 14MeV), deuterium-deuterium (DD, 2.45MeV), and Am Be sources. The simulation results also show that among the secondary particles generated by the incident neutron, the main contributions to the total energy deposition are from recoil protons induced in hydrogen-rich HDPE or Kapton (GEM material), and activation photons induced by neutron interaction with Ar atoms. Their contributions account for 90% of the total energy deposition. In addition, the dependence of neutron deposited energy spectrum on the composition of the gas mixture is presented.
文章类型Article
学科领域Physics
DOI10.1088/0256-307X/32/3/032901
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000350955600008
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228252
专题实验物理中心
中国科学院高能物理研究所_中国散裂中子源
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Wang, XD,Zhang, JW,Hu, BT,et al. Comparison of Experiment and Simulation of the triple GEM-Based Fast Neutron Detector[J]. CHINESE PHYSICS LETTERS,2015,32(3):32901.
APA Wang, XD.,Zhang, JW.,Hu, BT.,Yang, HR.,Duan, LM.,...&周健荣.(2015).Comparison of Experiment and Simulation of the triple GEM-Based Fast Neutron Detector.CHINESE PHYSICS LETTERS,32(3),32901.
MLA Wang, XD,et al."Comparison of Experiment and Simulation of the triple GEM-Based Fast Neutron Detector".CHINESE PHYSICS LETTERS 32.3(2015):32901.
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