类周期加载微波腔研究

Investigation of Quasi-Periodic RF Cavity for High Power Microwave Source

本文从高功率微波器件中电子俘获、群聚和换能的束波互作用过程出发 ,提出了类周期加载微波腔微波腔 ;同时根据微波场对电子运动的影响 ,研究了电子束在这类微波腔中俘获、群聚和换能的束波互作用过程 ,以及电子运动对微波场的影响 .基于 80 0kV、8kA的环形电子束 ,采用SUPPERFISH程序设计了Ku波段类周期加载微波腔 ,在2 .5维PIC程序模拟上获得了Ku波段 (13.5GHz)、峰值功率为 2 .4GW的微波输出 ,效率接近 4 0 % .,

Based on capture, bunching and energy exchange during the interaction between the beam and microwave in the high power microwave device, quasi-periodic RF cavity is proposed in the paper. Electron movement is studied under the action of the microwave field in the RF cavity, and its influence on the microwave field is also investigated. The quasi-periodic RF cavity at Ku-Band is designed by using SUPPERFISH code, and its working frequency is 13.5 GHz. In the Simulation (2.5 D PIC code), the output power of 2.4 GW is obtained at Ku-Band (13.5 GHz) using such cavity driven by ring beam, the parameters of the beam are 800 kV and 8 kA, and the efficiency of the beam momentum into microwave is close to 40%.