Influence of working gas on the properties of boron-coated MRPC thermal neutron detector by Garfield simulation

SHAN Qing; ZENG Jie; JIA Wenbao; LING Yongsheng; HEI Daqian; WEI Yonghong; ZHANG Yan

doi:10.11889/j.0253-3219.2014.hjs.37.070201

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Influence of working gas on the properties of boron-coated MRPC thermal neutron detector by Garfield simulation

更新时间：2021-03-03

- Influence of working gas on the properties of boron-coated MRPC thermal neutron detector by Garfield simulation
- NUCLEAR TECHNIQUES Vol. 37, Issue 7, Article number: 070201(2014)
- 作者机构：
  
  南京航空航天大学材料科学与技术学院,南京,210016
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2014.hjs.37.070201
  CLC：
- Published：07 July 2014
- 稿件说明：
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SHAN Qing, ZENG Jie, JIA Wenbao, et al. Influence of working gas on the properties of boron-coated MRPC thermal neutron detector by Garfield simulation[J]. Nuclear techniques, 2014, 37(7): 070201
DOI：

SHAN Qing, ZENG Jie, JIA Wenbao, et al. Influence of working gas on the properties of boron-coated MRPC thermal neutron detector by Garfield simulation[J]. Nuclear techniques, 2014, 37(7): 070201 DOI： 10.11889/j.0253-3219.2014.hjs.37.070201.

摘要

多气隙电阻板室(Multi-gap Resistive Plate Chamber

MRPC)是一种新型气体探测器，具有探测效率高和时间分辨好等优点，在内层玻璃涂硼后可用于热中子探测。不同的工作气体对涂硼MRPC热中子探测器的性能有很大影响。利用Garfield模拟了不同工作气体的汤生系数?、电子吸附系数?、漂移速度v、扩散系数D等物理参数，并计算给出了MRPC的时间分辨率?t、本征探测效率?。通过模拟结果对工作气体进行优化，为探测器的实际制作和实验测试提供必要的指导。

Abstract

Background: Multi-gap Resistive Plate Chamber (MRPC) is a kind of gas detector developed in 1995. Purpose: For its excellent time resolution and high efficiency

MRPC is used to detect thermal neutron by coating boron on the inner glass. Methods: The performances of the boron-coated MRPC thermal neutron detector are largely affected by the component or proportion of the working gas

so it is important to optimize the proportion of working gas. Then Garfield was used to simulate the gas parameter

such as Townsend coefficient ?

electron attachment coefficient ?

drift velocity v and diffusion coefficient D. Results: The time resolution ?t and detection efficiency ? of MRPC were calculated. Conclusion: Through the simulation

the proportion of working gas is optimized to provide necessary guidance for the fabrication of the detector. Abstract

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