多束团不稳定性的模拟研究  

Simulation of Coupled Bunch Instability

作　　者：王兰法[1] 张闯[1] 王书鸿[1] 国智元[1] 林郁正[2] 童德春[2] 

机构地区：[1]中国科学院高能物理研究所,北京100039 [2]清华大学工程物理系,北京100084

出　　处：《高能物理与核物理》1998年第12期1174-1181,共8页High Energy Physics and Nuclear Physics

摘　　要：利用模拟的方法研究了多束团不稳定性．SCBI程序（SIMULATIONOFCOUPLED-BUNCHINSTABILITIES）是一个用来模拟研究储存环上高频腔、真空盒内壁及其它腔形结构元件的长程尾场和中程尾场激发的多束团不稳定性的综合程序．在束团均匀分布情形下，比较了SCBI程序与ZAP程序的结果，两者非常一致．同时，利用SCBI程序对北京正负电子对撞机（BEPC）多束团改进方案（BEPCⅡ）的多束团不稳定性进行了详细的研究．The beam dynamics of coupled bunch instability is studied using simulation method in this paper. The code SCBI (Simulation of Coupled-Bunch Instabilities) is developed. ms code can be used to study the multi-bunch instabilities including the effects of long range and mediate range wake field due to RF HOMs, resistive wall and other cavity shape element along the ring. The simulation results using SCBI are compared with those of ZAP when bunches are symmetrically distributed, showing a good agreement with each other. The code SCBI has been used to study the multi-bunch instability in BEPCⅡ.

关 键 词：耦合束不稳定性 不稳定性模式 多束团 储存环 

分 类 号：TL594.015[核科学技术—核技术及应用]