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利用北京谱仪Ｊ／、Ｄｓ能量下端盖簇射计数器（ＥＳＣ）内的ｅ＋ｅ－末态事例，研究了电子簇射在ＥＳＣ中单个计数管的脉冲幅度分布、击中单元总数分布和各读出层的击中单元数分布、沉积能量分布和总沉积能量的分布；得到能量分辨约为２２％在ＳＯＢＥＲ程序框架的基础上采用双高斯分布描述单计数管脉冲幅度谱，ＥＧＳ４描述电磁簇射，考虑了三维磁场分布，完成了ＥＳＣ蒙特卡罗模拟程序，模拟结果与实验数据符合很好。
Using the e + e-end state in the ESC under the J / D of Beijing spectrometer, the pulse amplitude distribution, the total number of hits and the readouts Layer distribution of unit firing energy, distribution of depositional energy and total deposition energy. The energy resolution is about 22%. Based on the SOBER program framework, Gaussian distribution is used to describe the single-counting pulse amplitude spectrum. EGS4 is used to describe the electromagnetic shower, Considering the three-dimensional magnetic field distribution, the ESC Monte Carlo simulation program was completed. The simulation results are in good agreement with the experimental data.