C波段6MeV驻波加速管的仿真设计

摘要

为了提高加速器小型化程度,本文仿真设计了一个C波段轴耦合驻波加速管.该加速管包括2个聚束腔单元和7个均匀加速腔单元,功率源为3 MW速调管,总长度不到22 cm.加速管腔体结构、尺寸由CST仿真优化得到,束流动力学部分的仿真是由自编程序和CST粒子工作室进行仿真计算.经过仿真计算该加速管最终可获得加速流强约为130 mA,俘获率为37％,能量为6 MeV.%A C-band standing wave biperiodic on-axis coupled linear accelerating tube has been designed for a compact accelerator.The total length of the accelerating tube is less than 22 cm,which is powered by 3 MW klystrons.The simulations of the geometry and beam dynamics study of the accelerating tube are implemented by CST-and a code developed by ourselves.The results present 130 mA electron beam can be accelerated to 6 MeV with 37％capture ratio.