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新型M-THGEM结构探测器的蒙特卡罗模拟研究

魏鑫 王晓冬 程凯 刁伟卓 陈国祥 贺三军 李婷婷 赵越 柳正

魏鑫, 王晓冬, 程凯, 刁伟卓, 陈国祥, 贺三军, 李婷婷, 赵越, 柳正. 新型M-THGEM结构探测器的蒙特卡罗模拟研究[J]. 原子核物理评论, 2019, 36(1): 85-90. doi: 10.11804/NuclPhysRev.36.01.085
引用本文: 魏鑫, 王晓冬, 程凯, 刁伟卓, 陈国祥, 贺三军, 李婷婷, 赵越, 柳正. 新型M-THGEM结构探测器的蒙特卡罗模拟研究[J]. 原子核物理评论, 2019, 36(1): 85-90. doi: 10.11804/NuclPhysRev.36.01.085
WEI Xin, WANG Xiaodong, CHENG Kai, DIAO Weizhuo, CHEN Guoxiang, HE Sanjun, LI Tingting, ZHAO Yue, LIU Zheng. Monte Carlo Simulation on the Novel M-THGEM Detector[J]. Nuclear Physics Review, 2019, 36(1): 85-90. doi: 10.11804/NuclPhysRev.36.01.085
Citation: WEI Xin, WANG Xiaodong, CHENG Kai, DIAO Weizhuo, CHEN Guoxiang, HE Sanjun, LI Tingting, ZHAO Yue, LIU Zheng. Monte Carlo Simulation on the Novel M-THGEM Detector[J]. Nuclear Physics Review, 2019, 36(1): 85-90. doi: 10.11804/NuclPhysRev.36.01.085

新型M-THGEM结构探测器的蒙特卡罗模拟研究

doi: 10.11804/NuclPhysRev.36.01.085
基金项目: 国家自然科学基金资助项目(11605086,11875163);湖南省自然科学基金项目(2018JJ3422);湖南省教育厅基金资助项目(15B205,18C0461)
详细信息
    作者简介:

    魏鑫(1995-),男,湖南永州人,在读硕士,从事基于气体探测器的核探测研究;E-mail:weixin199511@foxmail.com

    通讯作者: 王晓冬,E-mail:wangxd@usc.edu.cn
  • 中图分类号: TL811

Monte Carlo Simulation on the Novel M-THGEM Detector

Funds: National Natural Science Foundation of China(11605086,11875163); Natural Science Foundation of Hunan Province, China(2018JJ3422); Research Foundation of Education Bureau of Hunan Province, China(15B205, 18C0461)
  • 摘要: 新型多层厚型气体电子倍增器(Multi-layers THick Gas Electron Multiplier,M-THGEM)和传统THGEM (厚型气体电子倍增器)相比,具有连续的雪崩区,能够在低气压和低电压下都有较高增益,结构更紧凑,易于大面积制作等优势。对M-THGEM探测器的工作原理及性能进行了模拟研究,首先通过有限元(ANSYS)软件对二层与三层结构的M-THGEM进行了建模,对电场和电势分布分别进行了模拟计算;再利用Garfield++程序包对M-THGEM探测器在不同低气压和不同工作电压下的增益、感生信号、正离子反馈率等性能进行了研究。模拟结果表明,三层结构M-THGEM在低气压(200 Torr)、纯He气体条件下,能够获得较稳定的增益(105),输出信号的宽度在12 ns左右;同时,为降低正离子反馈率,本工作提出并研究了一种非对称的电压施加方式,结果表明,这种施加方式能有效降低正离子的反馈率。


    Compared to THGEM (Thick Gas Electron Multiplier), the novel Multilayer Thick Gaseous Electron Multiplier (M-THGEM) has many advantages, such as continuous avalanche zone, more compact structure, high gain at low pressure and low operating voltage, and easy to make large-area production. In the presented work, two types of the M-THGEM detector (two or three layers) were modeled, and their main principle and performances were also studied by simulation. Two types of the detector were molded and simulated by using the finite element software (ANSYS), and the electric field distribution and nodes information lists were figured out. The effective gain and induced signal from M-THGEM detector at different gas pressures and operating voltages were studied with the Garfield++ package. The simulation results shown that M-THGEM can obtain a stable higher gain around 105 in an environment where has a low pressure even in 200 Torr and within a pure inertia gas such as He. At this condition, the width of the induced signal from the three-layers structure is around 120 ns. Additionally, an asymmetric way of the applied voltage was studied and aim to reduce the efficiency of ion feedback, and our results show that this method is effective.
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    [22] XIE Yuguang, PENG Zhiyuan, LI Genglan. Multilayer Thick GEM (M-THGEM)[R]. Annual Meeting of State Key Laboratory of Particle Detection and Electronics, Beijing, 26 Apr, 2018. (in Chinese) (谢宇广, 彭志远, 李更兰. 多层厚GEM(M-THGEM)研制[R]. 2018年核探测与核电子学国家重点实验室年会, 北京, 2018-04-26.)
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出版历程
  • 收稿日期:  2018-10-30
  • 修回日期:  2019-01-31
  • 刊出日期:  2019-03-20

新型M-THGEM结构探测器的蒙特卡罗模拟研究

doi: 10.11804/NuclPhysRev.36.01.085
    基金项目:  国家自然科学基金资助项目(11605086,11875163);湖南省自然科学基金项目(2018JJ3422);湖南省教育厅基金资助项目(15B205,18C0461)
    作者简介:

    魏鑫(1995-),男,湖南永州人,在读硕士,从事基于气体探测器的核探测研究;E-mail:weixin199511@foxmail.com

    通讯作者: 王晓冬,E-mail:wangxd@usc.edu.cn
  • 中图分类号: TL811

摘要: 新型多层厚型气体电子倍增器(Multi-layers THick Gas Electron Multiplier,M-THGEM)和传统THGEM (厚型气体电子倍增器)相比,具有连续的雪崩区,能够在低气压和低电压下都有较高增益,结构更紧凑,易于大面积制作等优势。对M-THGEM探测器的工作原理及性能进行了模拟研究,首先通过有限元(ANSYS)软件对二层与三层结构的M-THGEM进行了建模,对电场和电势分布分别进行了模拟计算;再利用Garfield++程序包对M-THGEM探测器在不同低气压和不同工作电压下的增益、感生信号、正离子反馈率等性能进行了研究。模拟结果表明,三层结构M-THGEM在低气压(200 Torr)、纯He气体条件下,能够获得较稳定的增益(105),输出信号的宽度在12 ns左右;同时,为降低正离子反馈率,本工作提出并研究了一种非对称的电压施加方式,结果表明,这种施加方式能有效降低正离子的反馈率。


Compared to THGEM (Thick Gas Electron Multiplier), the novel Multilayer Thick Gaseous Electron Multiplier (M-THGEM) has many advantages, such as continuous avalanche zone, more compact structure, high gain at low pressure and low operating voltage, and easy to make large-area production. In the presented work, two types of the M-THGEM detector (two or three layers) were modeled, and their main principle and performances were also studied by simulation. Two types of the detector were molded and simulated by using the finite element software (ANSYS), and the electric field distribution and nodes information lists were figured out. The effective gain and induced signal from M-THGEM detector at different gas pressures and operating voltages were studied with the Garfield++ package. The simulation results shown that M-THGEM can obtain a stable higher gain around 105 in an environment where has a low pressure even in 200 Torr and within a pure inertia gas such as He. At this condition, the width of the induced signal from the three-layers structure is around 120 ns. Additionally, an asymmetric way of the applied voltage was studied and aim to reduce the efficiency of ion feedback, and our results show that this method is effective.

English Abstract

魏鑫, 王晓冬, 程凯, 刁伟卓, 陈国祥, 贺三军, 李婷婷, 赵越, 柳正. 新型M-THGEM结构探测器的蒙特卡罗模拟研究[J]. 原子核物理评论, 2019, 36(1): 85-90. doi: 10.11804/NuclPhysRev.36.01.085
引用本文: 魏鑫, 王晓冬, 程凯, 刁伟卓, 陈国祥, 贺三军, 李婷婷, 赵越, 柳正. 新型M-THGEM结构探测器的蒙特卡罗模拟研究[J]. 原子核物理评论, 2019, 36(1): 85-90. doi: 10.11804/NuclPhysRev.36.01.085
WEI Xin, WANG Xiaodong, CHENG Kai, DIAO Weizhuo, CHEN Guoxiang, HE Sanjun, LI Tingting, ZHAO Yue, LIU Zheng. Monte Carlo Simulation on the Novel M-THGEM Detector[J]. Nuclear Physics Review, 2019, 36(1): 85-90. doi: 10.11804/NuclPhysRev.36.01.085
Citation: WEI Xin, WANG Xiaodong, CHENG Kai, DIAO Weizhuo, CHEN Guoxiang, HE Sanjun, LI Tingting, ZHAO Yue, LIU Zheng. Monte Carlo Simulation on the Novel M-THGEM Detector[J]. Nuclear Physics Review, 2019, 36(1): 85-90. doi: 10.11804/NuclPhysRev.36.01.085
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