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介绍了Touschek效应本底研究的意义、Touschek效应的作用原理和建模方法．使用自主开发及通用的模拟工具,系统研究了BEPCⅡ工作条件下BESⅢ主要探测器的Touschek本底．模拟和计算束流寿命的比较表明当前的模拟结果是有参考价值的,建模方法是可行的．探测器的模拟结果表明 Touschek本底不会影响将来BESⅢ的正常稳定运行,不会造成探测器的辐照损伤．
The significance of the Touschek effect background, the principle of Touschek effect and the modeling method are introduced. The Touschek background of BESⅢ main detector under BEPCⅡ working condition was systematically studied by using self-developed and universal simulation tools. Comparison of simulation and calculation of beam life shows that the current simulation results are of reference value and the modeling method is feasible. The simulation results of the detector show that the Touschek background will not affect the normal and stable operation of BES III in the future and will not cause radiation damage to the detector.