BESⅢCsI晶体量能器设计中的优化  

Optimization in the Design of BESⅢ CsI Crystal Calorimeter

作　　者：刘春秀[1] 傅成栋[1] 周莉[1] 张勤俭[1] 夏小米[1] 赖元芬[1] 李金[1] 方建[1] 陈沅[1] 蔡啸[1] 尚雷[1] 王曼[1] 吕军光[1] 王贻芳[1] 

机构地区：[1]中国科学院高能物理研究所,北京100039

出　　处：《高能物理与核物理》2003年第12期1114-1118,共5页High Energy Physics and Nuclear Physics

基　　金：国家杰出青年科学基金 ( 10 2 2 5 5 2 4)资助~~

摘　　要：在BESⅢ晶体量能器的设计、研制过程中 ,对其性能进行蒙特卡罗研究 ,从而优化设计方案 .In the process of design and research of BESⅢ crystal calorimeter we study its performance by Monte Carlo simulation and then optimize the scheme. Those results show that the the following scheme is optimized. CsI crystals typically have a front face of about 5×5cm 2 and a rear face of about 6.5×6.5cm 2, and the length of all crystals is 28cm. The crystals are supported by four iron screws fixed at the rear end. All crystals point to the collision point with a small tilt of 1°—3° in the θand 1.5° in the . Then we obtain that the energy resolution is about 2.1髎 and the position resolution about 6mm for 1GeV photon.

关 键 词：碘化铯晶体量能器 能量分辨 位置分辨 探测效率 蒙特卡罗模拟 北京谱仪 优化设计 

分 类 号：TH89[机械工程—仪器科学与技术]