BESⅢ电磁量能器宇宙线测试与刻度

摘要

By using the cosmic rays without magneticfield, whether the EMC electronics channel is well, and whether the cable connection is right. Then, using relative light yield data and compare with Monte Carlo(MC) cosmic rays sample to get the cosmic energy calibration constants in each detective unit. The calibration constant will be as input of Bhabha calibration.%通过对北京谱仪Ⅲ(BESⅢ)电磁量能器(EMC)进行宇宙线测试来检验EMC各个探测单元的电子学系统工作是否正常,电缆连接是否正确.利用实验室测量得到的晶体相对光产额(RLY)系数对无磁场的宇宙线数据进行刻度,然后与蒙特卡洛(MC)宇宙线样本进行比较,得出每个晶体探测单元的宇宙线能量刻度常数,以此作为EMC的初始能量刻度常数.