北京谱仪触发判选系统的模拟  

Simulation of BES Trigger

作　　者：刘斌[1] 过雅南[1] 赵棣新[1] 马恩成[1] 李德[1] 张月元[1] 陈鑫东[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》2001年第1期1-5,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金!(1999148);中国科学院基金!(KJ95T-03)资助&&

摘　　要：介绍了北京谱仪（ＢＥＳ）触发判选系统的模拟程序，并用实验数据对其正确性作了验证．运用该程序，首次用 ＢＥＳ的蒙特卡罗（Ｍｏｎｔｅ Ｃａｒｌｏ）数据从系统角度直接给出了触发判选效率，所得结果与实验方法测定的触发效率相一致，说明触发判选系统符合ＢＥＳ物理取数的要求．该模拟软件可以用来完备ＢＥＳ的Ｍｏｎｔｅ Ｃａｒｌｏ程序库，并可为今后触发系统的研究提供参考数据．A simulation program of BES trigger is described and a comparison of its results with experimental data is presented. With this program, the efficiencies of BES trigger system for different kinds of events generated by Monte-Carlo simulation are given for the first time and they are consistent with those measured by the experimental method. It proves that this trigger simulation code is suitable for studying the performance of BES trigger system and is a Complement of BES Monte-Carlo simulation code library.

关 键 词：触发判选 模拟 触发效率 北京谱仪 

分 类 号：TL817[核科学技术—核技术及应用]