梯形双梁结构超导偏转腔的优化设计

Optimization of a superconducting deflector with trapezoid parallel-bars

双梁结构超导偏转腔可对带电粒子束进行快速的偏转或旋转,具有紧凑、高效的特性,在超导自由电子激光、高能粒子对撞机等加速器装置中具有广泛的应用前景。该类型超导腔设计研究的一个重点是双梁形状的选择和尺寸的优化。针对中国科学院高能物理研究所提议建设的、基于超导直线加速器的X射线自由电子激光装置,采用CST MWS,CST PS,COMSOL,ANSYS等软件仿真手段,结合理论分析,完成了一款双梁形状为梯形的超导偏转腔的优化设计。该梯形双梁结构偏转腔具有良好的电磁和机械性能,同时,腔的尺寸更加紧凑,加工难度也有所降低。

Superconducting parallel-bar deflectors are deflecting/crabbing cavities with attractive properties,such as compact structure and high efficiency.Aiming at the application in the XFEL proposed by Institute of High Energy Physics,a 325 MHz superconducting deflector with trapezoid parallel-bars is investigated and optimized.This paper presents the details on the design method and results of this deflector as follows:the simulation codes of CST MWS,CST PS,COMSOL,ANSYS are employed,the electromagnetic and mechanical parameters of the deflector are competitive,and the machining process is improved.