漂移室中多次库仑散射对粒子动量分辨率影响的模拟计算  

Monte Carlo Simulation of the Momentum Resolution of Drift Chamber from Coulomb Multiscattering

作　　者：易恺[1] 陈昌[1] 张勤俭[1] 黄秀萍[1] 吴义根[1] 童国梁[1] 马基茂[1] 

机构地区：[1]中国科学院高能物理研究所

出　　处：《核电子学与探测技术》1998年第1期1-5,共5页Nuclear Electronics & Detection Technology

摘　　要：本文用探测器描述和模拟工具ＧＥＡＮＴ对北京τ－Ｃ工厂（ＢＴＣＦ）中心漂移室中多次库仑散射对粒子动量分辨率的贡献进行了模拟计算，得到对动量０．５ＧｅＶ／ｃ的π垂直于磁场方向入射时的动量分辨率为０．１８％×（１±１．６％），同时还用经验公式进行了估算与对比。两者的结果都表明当前中心漂移室的设计能满足ＢＴＣＦ对多次散射贡献的动量分辨率≤０．４％／β的要求。he momentum resolution of the Central Drift Chamber (CDC) for Beijing τCharm factory from Coulomb multiscattering has been simulated using GEANT and the momentum resolution of 018%×(1±160%) for the 05 GeV/c π penetrating the drift chamber vertical to the magnetic direction was got. The result was compared with those estimated by experimental formular and both results from simulation and estimation satisfy the requirement of BTCF CDC design.(

关 键 词：动量分辨率 多次库仑散射 粒子工厂 漂移室 

分 类 号：TL57[核科学技术—核技术及应用] TL8