高频腔体是回旋加速器高频系统的重要组成部分,其性能的优劣直接影响高频系统的效率和稳定性。对于14MeV医用回旋加速器,高频腔体在满足高频性能的同时,还要合理利用空间,简化腔体结构。在14MeV高频腔体物理设计过程中,使用了有限积分计算软件CST建立腔体模型,通过对腔体的关键结构尺寸进行调节和优化,最终得到了满足加速器物理要求的腔体模型。设计给出 High-frequency cavity is an important part of cyclotron high-frequency system, the merits of its performance directly affect the efficiency and stability of high-frequency system. For 14MeV medical cyclotron, high-frequency cavity to meet the high-frequency performance, but also the rational use of space, simplify the cavity structure. In the process of 14MeV high-frequency cavity physical design, a finite integral calculation software CST was used to build a cavity model. Through adjusting and optimizing the key structural dimensions of the cavity, a cavity model meeting the physical requirements of the accelerator was finally obtained. Design given