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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,Si PM)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。
A new type of hard X-ray detector used in tokamak plasma diagnosis is introduced. The detector is mainly composed of Lutetium-yttrium Oxyorthosilicate (LYSO) scintillator and silicon photomultiplier (Si PM )composition. Based on the application requirements of the project, the detector selection and detector design based on particle transport Monte Carlo simulation software GEANT4 were described, and a front-end detection system was set up and on-site diagnosis was carried out on the HL-2A tokamak device experiment. A diagnostic measurement of the hard X-ray spatial energy spectrum and radiation intensity distribution was achieved. Experiments show that the detector array has a time resolution of 10 ms, and has the advantages of compact structure, convenient use and the like, and can meet the diagnostic requirement of hard X-ray dynamic energy spectrum and intensity distribution measurement in plasma diagnosis.