Study of a new type of hard X-ray detector for HL-2A device

Yanfeng ZHAO; Weiwei FAN; Chen YUAN; Chunyu JIANG; Shan SUN; Wei ZHANG; Zejie YIN

doi:10.11889/j.0253-3219.2017.hjs.40.040402

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Study of a new type of hard X-ray detector for HL-2A device

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- Study of a new type of hard X-ray detector for HL-2A device
- NUCLEAR TECHNIQUES Vol. 40, Issue 4, Article number: 040402(2017)
- 作者机构：
  
  中国科学技术大学近代物理系合肥 230027
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China;National Natural Science Foundation of China;National Magnetic Confinement Fusion Research
- DOI：10.11889/j.0253-3219.2017.hjs.40.040402
  CLC： TL812.1
- Received：03 November 2016，
  
  Revised：30 November 2016，
  
  Published：2017-04
- 稿件说明：
移动端阅览
Yanfeng ZHAO, Weiwei FAN, Chen YUAN, et al. Study of a new type of hard X-ray detector for HL-2A device[J]. Nuclear techniques, 2017, 40(4): 040402
DOI：

Yanfeng ZHAO, Weiwei FAN, Chen YUAN, et al. Study of a new type of hard X-ray detector for HL-2A device[J]. Nuclear techniques, 2017, 40(4): 040402 DOI： 10.11889/j.0253-3219.2017.hjs.40.040402.

摘要

介绍了一种应用于托卡马克等离子诊断领域的新型硬X射线探测器，该探测器主要由硅酸钇镥（Lutetium-yttrium Oxyorthosilicate，LYSO）闪烁体和硅光电倍增管（Silicon Photomultiplier，SiPM）组成。基于项目应用需求，对探测器的选型和基于粒子输运蒙特卡罗仿真软件GEANT4的探测器设计加以阐述，并搭建了前端的探测系统，在HL-2A托卡马克装置上进行了现场诊断实验。实现了硬X射线空间能谱和辐射强度分布的诊断测量。实验表明该探测器阵列具有10 ms的时间分辨率，同时具有结构紧凑、使用方便等特点，能够满足等离子体诊断中硬X射线动态能谱和强度分布测量的诊断需求。

Abstract

Background

The hard X-ray diagnostic system is important for HL-2A Tokamak experimental facility. In order to improve the diagnostic performance

a new hard X-ray detector with better precision is required.

Purpose

This study aims to design a new type of hard X-ray detector to measure X-ray spatial energy spectrum and radiation intensity distribution for HL-2A.

Methods

The new hard X-ray detection system is composed of lutetium-yttrium oxyorthosilicate (LYSO) scintillator and silicon photomultiplier (SiPM). Selection of the detector and detector design based on the Monte Carlo particle transport simulation tool GEANT4 are effectuated to meet the application requirements of the project. Corresponding front-end electronics was implemented together with the detector to measure the hard X-ray spatial energy spectrum and radiation intensity distribution on site.

Results

The hard X-ray spatial energy spectrum with time resolution of 10 ms was successfully obtained in the experimental test using proposed new type of hard X-ray detector on the HL-2A Tokamak facility.

Conclusion

Experimental results show that the detector array has good time resolution and meets the high-precision measurement demand of hard X-ray dynamic spectrum and intensity distribution in plasma diagnose for HL-2A Tokamak facility. It has the advantages of compact structure and easy to use as well.

关键词

Keywords

references

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