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基于10B4C转换体的多层多丝正比室中子探测器模拟

田立朝 赵子甲 陈忠 姜静 吕中良 马燕云

田立朝, 赵子甲, 陈忠, 姜静, 吕中良, 马燕云. 基于10B4C转换体的多层多丝正比室中子探测器模拟[J]. 原子核物理评论, 2019, 36(1): 71-77. doi: 10.11804/NuclPhysRev.36.01.071
引用本文: 田立朝, 赵子甲, 陈忠, 姜静, 吕中良, 马燕云. 基于10B4C转换体的多层多丝正比室中子探测器模拟[J]. 原子核物理评论, 2019, 36(1): 71-77. doi: 10.11804/NuclPhysRev.36.01.071
TIAN Lichao, ZHAO Zijia, CHEN Zhong, JIANG Jing, LÜ Zhongliang, MA Yanyun. Simulation of a Novel Neutron Detector Based on Multi-layer MWPC with 10B4C Convertor[J]. Nuclear Physics Review, 2019, 36(1): 71-77. doi: 10.11804/NuclPhysRev.36.01.071
Citation: TIAN Lichao, ZHAO Zijia, CHEN Zhong, JIANG Jing, LÜ Zhongliang, MA Yanyun. Simulation of a Novel Neutron Detector Based on Multi-layer MWPC with 10B4C Convertor[J]. Nuclear Physics Review, 2019, 36(1): 71-77. doi: 10.11804/NuclPhysRev.36.01.071

基于10B4C转换体的多层多丝正比室中子探测器模拟

doi: 10.11804/NuclPhysRev.36.01.071
基金项目: 国家自然科学基金资助项目(11505287);特殊环境机器人技术四川省重点实验室项目(17kftk01);中国科学院中子输运理论与辐射安全重点实验室项目(NEUTRON201707)
详细信息
    作者简介:

    田立朝(1984-),男,河北石家庄人,讲师,博士,从事粒子物理与原子核物理研究;E-mail:tianlichao@nudt.edu.com

  • 中图分类号: O571.53

Simulation of a Novel Neutron Detector Based on Multi-layer MWPC with 10B4C Convertor

Funds: National Natural Science Foundation of China (11505287); Fun of Robot Technology Used for Special Environment Key Laboratory of Sichuan Province (17kftk01); Opening Foundation of Key Laboratory of Neutronics and Radiation Safety of CAS (NEUTRON201707)
  • 摘要: 随着国内高通量中子源及中子散射谱仪的快速发展,对高探测效率、高位置分辨、低伽玛灵敏度的位置灵敏型热中子探测器需求日益迫切。目前国际上中子散射谱仪大多数采用了基于3He的热中子探测器,由于当前3He价格昂贵,寻求3He替代型热中子探测器的相关研究任务紧迫。提出了一种基于10B4C转换体的多层多丝正比室新型二维位置灵敏型热中子探测器,并利用蒙特卡罗模拟软件Geant4和Garfield++对其探测效率、位置分辨、n/γ抑制比等性能展开了详细的模拟研究。结果表明,当多丝正比室单元为40层,阈值为200 keV时,热中子(E=0.025 eV)探测效率可达到~54%,位置分辨为2.6 mm (FWHM),n/γ抑制比为~107,可以满足大多数中子散射谱仪的需求,为此类探测器设计及实验研究提供了理论依据。


    As the development of high flux neutron sources and neutron scattering spectrometers in China, more and more neutron detectors with high detection efficiency, high position resolution, high time resolution and low gamma sensitivity are need ungently. 3He based neutron detector is one of the best options. Recently, because of the 3He gas shortage and its expensive price, we must find a new replacement of 3He. A two-dimensional position sensitive neutron detector based on multi-layer Multi Wires Proportional Chambers (mMWPC) with 10B4C converter was proposed in this paper. The neutron detection efficiency, position resolution and γ compression were simulated with Geant4 and Garfield++. The results show that with 40 layers of neutron convertor, high themal neutron (E=0.025 eV) detection of~54%, best position resolution of 2.6 mm (FWHM) and high n/γ rejection ratio of~107 with the threshold of 200 keV can be achieved, which can meet the requirements of most spectrometers. This simulation results lay a good foundation for the next step of detector construction and test.
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    [2] LIU Yuntao, CHEN Dongfeng. Physics, 2013, 42(8):534. (in Chinese) (刘蕴韬, 陈东风. 物理, 2013, 42(8):534.)
    [3] CHEN Hesheng. Modern Physics, 2016, 38(1):3. (in Chinese) (陈和生. 现代物理知识, 2016, 38(1):3.)
    [4] KOUZES R T, ELY J H, ERIKSON L E, et al. Nucl Instr and Meth A, 2010, 623(3):1035.
    [5] WANG Yanfeng, SUN Zhijia, ZHOU Jianrong, et al. Science China Physics, Mechanics and Astronomy, 2013, 56(10):1987.
    [6] JEFFREY L, ATHANASIADES A, SUN Liang, et al. IEEE Nuclear Science Symposium Conference Record[C]. Orlando:IEEE, 2009:119.
    [7] XIE Zhaoyang, ZHOU Jianrong, SONG Yushou, et al. Nucl Instr and Meth A, 2018, 888:235.
    [8] WANG Xiaohu, ZHU Qiming, CHEN Yuanbo, et al. Nuclear Electronics and Detection Technology, 2009, 29(4):756. (in Chinese) (王小胡, 朱启明, 陈元柏, 等. 核电子学与探测技术, 2009, 29(4):756.)
    [9] AGOSTINELLI S, ALLISON J, AMAKO K, et al. Nucl Instr and Meth A, et al. 2003, 506:250.
    [10] Available on the web http://garfieldpp.web.cern.ch/garfieldpp.
    [11] VAN DER ENDE B M, ATANACKOVIC J, ERLANDSON A, et al. Nucl Inst Meth A, 2016, 820:40.
    [12] VAN DER ENDE B M, RAND E T, ERLANDSON A, et al. Nucl Instr and Meth A, 2018, 894:138.
    [13] JAMIL M, RHEE J T, KIM H G, et al. Applied Radiation and Isotopes, 2015, 95:90.
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出版历程
  • 收稿日期:  2018-06-07
  • 修回日期:  2018-07-22
  • 刊出日期:  2019-03-20

基于10B4C转换体的多层多丝正比室中子探测器模拟

doi: 10.11804/NuclPhysRev.36.01.071
    基金项目:  国家自然科学基金资助项目(11505287);特殊环境机器人技术四川省重点实验室项目(17kftk01);中国科学院中子输运理论与辐射安全重点实验室项目(NEUTRON201707)
    作者简介:

    田立朝(1984-),男,河北石家庄人,讲师,博士,从事粒子物理与原子核物理研究;E-mail:tianlichao@nudt.edu.com

  • 中图分类号: O571.53

摘要: 随着国内高通量中子源及中子散射谱仪的快速发展,对高探测效率、高位置分辨、低伽玛灵敏度的位置灵敏型热中子探测器需求日益迫切。目前国际上中子散射谱仪大多数采用了基于3He的热中子探测器,由于当前3He价格昂贵,寻求3He替代型热中子探测器的相关研究任务紧迫。提出了一种基于10B4C转换体的多层多丝正比室新型二维位置灵敏型热中子探测器,并利用蒙特卡罗模拟软件Geant4和Garfield++对其探测效率、位置分辨、n/γ抑制比等性能展开了详细的模拟研究。结果表明,当多丝正比室单元为40层,阈值为200 keV时,热中子(E=0.025 eV)探测效率可达到~54%,位置分辨为2.6 mm (FWHM),n/γ抑制比为~107,可以满足大多数中子散射谱仪的需求,为此类探测器设计及实验研究提供了理论依据。


As the development of high flux neutron sources and neutron scattering spectrometers in China, more and more neutron detectors with high detection efficiency, high position resolution, high time resolution and low gamma sensitivity are need ungently. 3He based neutron detector is one of the best options. Recently, because of the 3He gas shortage and its expensive price, we must find a new replacement of 3He. A two-dimensional position sensitive neutron detector based on multi-layer Multi Wires Proportional Chambers (mMWPC) with 10B4C converter was proposed in this paper. The neutron detection efficiency, position resolution and γ compression were simulated with Geant4 and Garfield++. The results show that with 40 layers of neutron convertor, high themal neutron (E=0.025 eV) detection of~54%, best position resolution of 2.6 mm (FWHM) and high n/γ rejection ratio of~107 with the threshold of 200 keV can be achieved, which can meet the requirements of most spectrometers. This simulation results lay a good foundation for the next step of detector construction and test.

English Abstract

田立朝, 赵子甲, 陈忠, 姜静, 吕中良, 马燕云. 基于10B4C转换体的多层多丝正比室中子探测器模拟[J]. 原子核物理评论, 2019, 36(1): 71-77. doi: 10.11804/NuclPhysRev.36.01.071
引用本文: 田立朝, 赵子甲, 陈忠, 姜静, 吕中良, 马燕云. 基于10B4C转换体的多层多丝正比室中子探测器模拟[J]. 原子核物理评论, 2019, 36(1): 71-77. doi: 10.11804/NuclPhysRev.36.01.071
TIAN Lichao, ZHAO Zijia, CHEN Zhong, JIANG Jing, LÜ Zhongliang, MA Yanyun. Simulation of a Novel Neutron Detector Based on Multi-layer MWPC with 10B4C Convertor[J]. Nuclear Physics Review, 2019, 36(1): 71-77. doi: 10.11804/NuclPhysRev.36.01.071
Citation: TIAN Lichao, ZHAO Zijia, CHEN Zhong, JIANG Jing, LÜ Zhongliang, MA Yanyun. Simulation of a Novel Neutron Detector Based on Multi-layer MWPC with 10B4C Convertor[J]. Nuclear Physics Review, 2019, 36(1): 71-77. doi: 10.11804/NuclPhysRev.36.01.071
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