基于延迟块读出的多丝正比室探测器的研制

何越峰; 王艳凤; 赵映潭; 樊瑞睿; 马长利; 龚学余; 孙志嘉; 曹平; 于莉; 郑墁煜; 张莹

doi:10.11889/j.0253-3219.2018.hjs.41.080403

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基于延迟块读出的多丝正比室探测器的研制

核电子学与仪器 | 更新时间：2021-05-19

- 基于延迟块读出的多丝正比室探测器的研制
- Prototype of neutron sensitive MWPC detector with delay-line readout
- 核技术 2018年41卷第8期文章编号：080403
- 作者机构：
  
  1.南华大学衡阳 241001
  2.中国科学院高能物理研究所核探测与核电子学国家重点实验室北京 100049
  3.东莞中子科学中心东莞 523808
  4.西安交通大学西安 710049
  5.中国科学技术大学合肥 230026
  6.中国工程物理研究院核物理与化学研究所中子物理学重点实验室绵阳 621900
- 作者简介：
  
  [ "何越峰, 男, 1990年出生, 2014年毕业于安徽工程大学, 现为硕士研究生, 研究领域为电子系统集成与应用", "HE Yuefeng, male, born in 1990, graduated from Anhui Polytechnic University in 2014, master student, focusing on electronic system integration and application" ]
  樊瑞睿, E-mail:fanrr@ihep.ac.cn FAN Ruirui, E-mail:fanrr@ihep.ac.cn
- 基金信息：
  
  核探测与核电子学国家重点实验室(Y61614306A);中国工程物理研究院中子物理学重点实验室(Y71123005B);国家自然科学基金(Y6281120K2)
- DOI：10.11889/j.0253-3219.2018.hjs.41.080403
  中图分类号： TL99
- 收稿日期：2017-08-16，
  
  修回日期：2018-01-25，
  
  纸质出版日期：2018-08
- 稿件说明：
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何越峰, 王艳凤, 赵映潭, 等. 基于延迟块读出的多丝正比室探测器的研制[J]. 核技术, 2018,41(8):080403

Yuefeng HE, Yanfeng WANG, Yingtan ZHAO, et al. Prototype of neutron sensitive MWPC detector with delay-line readout[J]. Nuclear techniques, 2018, 41(8): 080403
何越峰, 王艳凤, 赵映潭, 等. 基于延迟块读出的多丝正比室探测器的研制[J]. 核技术, 2018,41(8):080403 DOI： 10.11889/j.0253-3219.2018.hjs.41.080403.

Yuefeng HE, Yanfeng WANG, Yingtan ZHAO, et al. Prototype of neutron sensitive MWPC detector with delay-line readout[J]. Nuclear techniques, 2018, 41(8): 080403 DOI： 10.11889/j.0253-3219.2018.hjs.41.080403.

摘要

为了验证延迟块读出法（Delay-line Readout Method）在大面积中子探测器位置测量中的可行性，研制了一整套应用于中国散裂中子源（China Spallation Neutron Source，CSNS）工程的二维位置灵敏多丝正比室（Multi-wire Proportional Chamber，MWPC）探测器原型样机。入射粒子在探测器中的位置信号首先通过一组5ns延迟块在相反两端输出，再进入高精度时数转换器（Time to Digital Converter，TDC）电子学系统，转换为时间差数字信号的方式记录下来，最后运用root软件进行数据分析。分析结果表明：从绘制的二维图中能看到α源3个不同位置坐标，与α源的摆放位置一致且位置分辨均好于2mm，说明研制出的MWPC探测器与延迟块读出法能完美匹配起来，达到高精度的位置测量需求。

Abstract

Background

A neutron sensitive multi-wire proportional chamber (MWPC) is one of important components for the CSNS's (China spallation neutron source) construction.In terms of large-area neutron detectors

the delay-line readout method is a new type of signal readout method.

Purpose

This study aims to design and implement a 200mm×200mm sensitive area MWPC prototype with a delay-line readout system to verify the feasibility of the delay-line readout method.

Methods

An unified anode readout and two channel for each cathode signal are implemented with the MWPC. At first we put α radiation sources in three different positions of the neutron detector

the position information of the incident particle what these sources scattering into the detector contained by the induced signal in cathode. After avalanche

spreads through a series of 5ns modules to the opposite ends

a high precision time to digital converter (TDC) is employed for determining arrival time

from which the incident position can be derived. Finally

the root software is used for data analysis so as to verify the position performance of this MWPC.

Results

The preliminary results with the α radiation source testing showed the position resolution is better than 2 mm which achieved by this proposed MWPC.

Conclusion

The developed MWPC detector can successfully perform position measurement. Meanwhile

it is good to verify the feasibility of the delay-line readout method in the measurement of large-area neutron detectors.

关键词

Keywords

references

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