连续波模式下超导加速器束流负载分析研究  

Research on the Beam Loading in the CW Superconducting Accelerator

作　　者：鲁向阳[1] 赵夔[1] 向蓉[1] 张保澄[1] 陈佳洱[1] 

机构地区：[1]北京大学重离子物理研究所,北京100871

出　　处：《原子能科学技术》2003年第5期385-388,共4页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(19985001;10075006)

摘　　要：本工作推导了超导加速器在连续波模式时,在点电荷近似条件下,相对论束流负载与腔的相互作用过程的解析表达。同时对北京大学超导加速器平台(PKU SCAF)的束流负载设计进行了初步分析。计算结果表明,当主加速器馈入功率为10kW时,最佳束流负载为1 5mA,此时电子增能为6 6MeV,β因子为4 5×103。The superconducting (SC) accelerator has high quality factor Q, and the decay time of the field excited by beam is much longer than that in normal conducting cavity. Thus, beam-induced field has far consequences for power dissipation and beam stability. In the paper, this interaction process was analyzed considering a point charge moving on axis through a cavity. Based on it, the beam loading in PKU-SCAF has been researched. With the 10 kW input power, the optimal average current in the 9-cell SC cavity of PKU-SCAF is 1.5 mA, accelerating voltage is 6.6 MV, and β factor is 4.5×103.

关 键 词：超导加速器 束流 负载 点电荷 功率 

分 类 号：TL503[核科学技术—核技术及应用]