通过GEANT4蒙特卡罗代码研究硼涂覆GEM探测器的热中子响应。
Thermal neutron response of a boron-coated GEM detector via GEANT4 Monte Carlo code.
作者信息
Jamil M, Rhee J T, Kim H G, Ahmad Farzana, Jeon Y J
机构信息
Division of International Studies, College of Global Integrated Studies, Konkuk University, Seoul 143-701, South Korea; IAP, High Energy Physics Lab, Department of Physics, Konkuk University, Seoul 143-701, South Korea.
IAP, High Energy Physics Lab, Department of Physics, Konkuk University, Seoul 143-701, South Korea.
出版信息
Appl Radiat Isot. 2015 Jan;95:90-93. doi: 10.1016/j.apradiso.2014.09.023. Epub 2014 Oct 22.
In this work, we report the design configuration and the performance of the hybrid Gas Electron Multiplier (GEM) detector. In order to make the detector sensitive to thermal neutrons, the forward electrode of the GEM has been coated with the enriched boron-10 material, which works as a neutron converter. A total of 5×5cm configuration of GEM has been used for thermal neutron studies. The response of the detector has been estimated via using GEANT4 MC code with two different physics lists. Using the QGSP_BIC_HP physics list, the neutron detection efficiency was determined to be about 3%, while with QGSP_BERT_HP physics list the efficiency was around 2.5%, at the incident thermal neutron energies of 25meV. The higher response of the detector proves that GEM-coated with boron converter improves the efficiency for thermal neutrons detection.
在这项工作中，我们报告了混合气体电子倍增器（GEM）探测器的设计结构和性能。为了使探测器对热中子敏感，GEM的前电极已涂覆有富集的硼-10材料，其用作中子转换器。总共5×5cm结构的GEM已用于热中子研究。通过使用具有两种不同物理列表的GEANT4蒙特卡罗代码来估计探测器的响应。在25meV的入射热中子能量下，使用QGSP_BIC_HP物理列表时，确定中子探测效率约为3%，而使用QGSP_BERT_HP物理列表时，效率约为2.5%。探测器的较高响应证明涂覆有硼转换器的GEM提高了热中子探测效率。
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