Comparison of Experiment and Simulation of the triple GEM-Based Fast Neutron Detector

doi:10.1088/0256-307X/32/3/032901

	Comparison of Experiment and Simulation of the triple GEM-Based Fast Neutron Detector
	Wang Xiao-Dong 1; Zhang Jun-Wei 2; Hu Bi-Tao 3; Yang He-Run2 ; Duan Li-Min2 ; Lu Chen-Gui2 ; Hu Rong-Jiang2 ; Zhang Chun-Hui 3; Zhou Jian-Rong 4; Yang Lei 3
刊名	CHINESE PHYSICS LETTERS
	2015-03-01
卷号	32
ISSN号	0256-307X
DOI	10.1088/0256-307X/32/3/032901
文献子类	Article
英文摘要	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.
资助项目	National Natural Science Foundation of China[11135002] ; National Natural Science Foundation of China[11305232] ; National Natural Science Foundation of China[11175076]
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000350955600008
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/47895]
专题	中国科学院近代物理研究所
通讯作者	Hu Bi-Tao
作者单位	1.Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China 4.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 5.China Petr Logging CO LTD, LWD Logging Ctr, Xian 710000, Peoples R China
推荐引用方式 GB/T 7714	Wang Xiao-Dong,Zhang Jun-Wei,Hu Bi-Tao,et al. Comparison of Experiment and Simulation of the triple GEM-Based Fast Neutron Detector[J]. CHINESE PHYSICS LETTERS,2015,32.
APA	Wang Xiao-Dong.,Zhang Jun-Wei.,Hu Bi-Tao.,Yang He-Run.,Duan Li-Min.,...&Luo Wen.(2015).Comparison of Experiment and Simulation of the triple GEM-Based Fast Neutron Detector.CHINESE PHYSICS LETTERS,32.
MLA	Wang Xiao-Dong,et al."Comparison of Experiment and Simulation of the triple GEM-Based Fast Neutron Detector".CHINESE PHYSICS LETTERS 32(2015).