Study of a nTHGEM-based thermal neutron detector

Study of a nTHGEM-based thermal neutron detector
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基于nTHGEM的热中子探测器研究

DOI:
10.1088/1674-1137/40/7/076002
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发表时间:
2016-03
期刊:
影响因子:
3.6
通讯作者:
Bi-Tao Hu
Bi-Tao Hu
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Ke Li;Jian-Rong Zhou;Xiao-Dong Wang;Tao Xiong;Ying Zhang;Yu-Guang Xie;Liang Zhou;Hong Xu;Gui-An Yang;Yan-Feng Wang;Yan Wang;Jin-Jie Wu;Zhi-Jia Sun;Bi-Tao Hu

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随着新一代中子源的出现,传统的中子探测器已经不能满足应用的要求,特别是在高通量下。此外,面对全球He-3气体供应的危机,研究新型的中子探测器作为He-3的替代品是粒子探测领域的一个研究热点。GEM(Gaseous Electron Multiplier)中子探测器具有计数率高、空间和时间分辨率好等优点,有望成为中子探测器的发展方向之一。本文利用Geant 4程序对中子探测的物理过程进行了模拟,研究了热转换效率与硼层厚度和层数的关系。针对中子探测的特殊性,我们研制了一种新型的中子探测专用陶瓷nTHGEM(neutron THick GEM)。介绍了nTHGEM在不同Ar/CO2混合气体中工作的性能,包括使用铜靶X射线源测量增益和计数率平台。一个探测器与一个单一的nTHGEM已被测试为2-D成像使用CF-252中子源。获得了影响nTHGEM探测器性能的关键参数,为进一步研究该探测器提供了必要的实验数据。
With new generation neutron sources, traditional neutron detectors cannot satisfy the demands of the applications, especially under high flux. Furthermore, facing the global crisis in He-3 gas supply, research on new types of neutron detector as an alternative to He-3 is a research hotspot in the field of particle detection. GEM (Gaseous Electron Multiplier) neutron detectors have high counting rate, good spatial and time resolution, and could be one future direction of the development of neutron detectors. In this paper, the physical process of neutron detection is simulated with Geant4 code, studying the relations between thermal conversion efficiency, boron thickness and number of boron layers. Due to the special characteristics of neutron detection, we have developed a novel type of special ceramic nTHGEM (neutron THick GEM) for neutron detection. The performance of the nTHGEM working in different Ar/CO2 mixtures is presented, including measurements of the gain and the count rate plateau using a copper target X-ray source. A detector with a single nTHGEM has been tested for 2-D imaging using a Cf-252 neutron source. The key parameters of the performance of the nTHGEM detector have been obtained, providing necessary experimental data as a reference for further research on this detector.
开发用于单光子、带电粒子和中子检测的金涂层 THGEM
DOI: 10.1016/j.nima.2013.08.042
发表时间: 2013-11
期刊: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子: --
作者:
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发表时间: 2011
期刊: Chinese Physics C
影响因子: 3.6
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影响因子: 1.4
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