A novel compact Tokamak Hard X-ray diagnostic detector  

作　　者：曹靖 蒋春雨 赵艳凤 杨青巍 阴泽杰 

机构地区：[1]State Key Laboratory of Particle Detection and Electronics,University of Science and Technology of China [2]Department of Modern Physics, University of Science and Technology of China [3]Southwestern Institute of Physics

出　　处：《Nuclear Science and Techniques》2015年第6期85-89,共5页核技术（英文）

基　　金：Supported by the National Natural Science Foundation of China(Nos.11375263 and 11375195);National magnetic confinement fusion Science Program of China(No.2013GB104003)

摘　　要：A compact X-ray detector based on the lutetium yttrium oxyorthosilicate scintillator(LYSO) and silicon photomultiplier(Si PM) has been designed and fabricated for the hard X-ray diagnosis on the HL_2A and HL_2M Tokamak devices. The LYSO scintillator and Si PM in small dimensions were combined in a heat shrink tube package, making the detector compact and integrative. The Monte Carlo particle transport simulation tool,Geant4, was utilized for the design of the detector for the hard X-ray from 10 keV to 200 keV and the best structure scheme was presented. Finally, the detector was used to measure the photon spectrum of a ^(137)Cs gamma source with a pre-amplifier and a multichannel amplitude analyzer. The measured spectrum is consistent with the theoretic spectrum, it has shown that the energy resolution of the detector is less than 14.8% at an energy of 662 keV.A compact X-ray detector based on the lutetium yttrium oxyorthosilicate scintillator（LYSO） and silicon photomultiplier（Si PM） has been designed and fabricated for the hard X-ray diagnosis on the HL_2A and HL_2M Tokamak devices. The LYSO scintillator and Si PM in small dimensions were combined in a heat shrink tube package, making the detector compact and integrative. The Monte Carlo particle transport simulation tool,Geant4, was utilized for the design of the detector for the hard X-ray from 10 keV to 200 keV and the best structure scheme was presented. Finally, the detector was used to measure the photon spectrum of a ^（137）Cs gamma source with a pre-amplifier and a multichannel amplitude analyzer. The measured spectrum is consistent with the theoretic spectrum, it has shown that the energy resolution of the detector is less than 14.8% at an energy of 662 keV.

关 键 词：X射线探测器 托卡马克装置 紧凑型 诊断仪 能量分辨率 GEANT4 光电倍增管 X射线诊断 

分 类 号：TL631.24[核科学技术—核技术及应用]