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基于国产厚型气体电子倍增器的低能电子二维位置探测器
THGEM-based two dimension position detector for low energy electron
- 核技术 2016年39卷第9期 文章编号：090402
- 作者机构：
1.核工业二九〇研究所 韶关 512026
2.核探测与核电子学国家重点实验室 北京 100049
3.中国科学院高能物理研究所 北京 100049
- 作者简介：
[ "颜嘉庆,男,1989年出生,2015年于南华大学核科学技术学院获硕士学位", "YAN Jiaqing, male, born in 1989, graduated from Institute of Nuclear Science and Technology of University of South China with a master’s degree in 2015" ]
- 基金信息：国家自然科学基金(11205173);核探测与核电子学国家重点实验室(H9294206T)
DOI：10.11889/j.0253-3219.2016.hjs.39.090402
中图分类号： TL82收稿日期：2016-04-01，
修回日期：2016-06-21，
纸质出版日期：2016-09
- 稿件说明：
移动端阅览
颜嘉庆, 谢宇广, 胡涛, 等. 基于国产厚型气体电子倍增器的低能电子二维位置探测器[J]. 核技术, 2016,39(9):090402
Jiaqing YAN, Yuguang XIE, Tao HU, et al. THGEM-based two dimension position detector for low energy electron[J]. Nuclear techniques, 2016, 39(9): 090402
颜嘉庆, 谢宇广, 胡涛, 等. 基于国产厚型气体电子倍增器的低能电子二维位置探测器[J]. 核技术, 2016,39(9):090402 DOI： 10.11889/j.0253-3219.2016.hjs.39.090402.
Jiaqing YAN, Yuguang XIE, Tao HU, et al. THGEM-based two dimension position detector for low energy electron[J]. Nuclear techniques, 2016, 39(9): 090402 DOI： 10.11889/j.0253-3219.2016.hjs.39.090402.
摘要
为探测0.1-50MeV低能电子脉冲束流的位置分布，研制基于国产厚型气体电子倍增器（Thick Gaseous Electron Multiplier
THGEM）的二维位置探测器，位置分辨要求好于200μm，灵敏面积为50mm×50mm。THGEM的孔径为150μm、孔间距400μm、厚度100μm。用Geant4模拟了薄膜窗厚度、空气层厚度等对电子透过率和横向扩散的影响。根据模拟结果，优化了探测器的结构和设计。并用能量为5.9keV的X射线源
55
Fe测试不同工作气体的增益，单层最大增益好于1×10
4
，双层最大增益好于6×10
4
，能量分辨率好于23%。
Abstract
Background
2
The thick gaseous electron multiplier(THGEM)is homemade with the hole diameter of 150μm
pitch of 400μm
and thickness of 100μm.
Purpose
2
A THGEM-based 2D position detector is developed for low energy electron detection.
Methods
2
The influences of film's thickness
air-layer's thickness
etc
.
on the electron transfer efficiency and transverse diffusion were simulated by Geant4 and using the 5.9-keV X-rays
and the gas gain
energy resolution were measured in different gas mixtures.
Results
2
According to the simulation results
the design and structure of the detector were optimized and the maximum gas gain of single and double layer THGEMs reached 1×10
4
and 6×10
4
respectively
and the energy resolution was higher than 23% for both single-and double-layer THGEMs.
Conclusion
2
The spatial resolution is required less than 200μm in 50mm×50mm sensitive area.
关键词
Keywords
references
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