强激光与粒子束2025，Vol.37Issue(4)：86-92,7.DOI:10.11884/HPLPB202537.240343
S波段6 MeV紧凑型电子回旋加速器仿真设计与模拟研究
Simulation design of an S-band 6 MeV compact microtron
摘要
Abstract
The Anhui Laboratory of Advanced Photon Science and Technology has beer developing a 6 MeV compact microtron,which can be used to drive compact microfocus X-ray sources or compact terahertz free electron lasers.To achieve a more compact accelerator design,the CST Electromagnetic suite was used to design and calculate the second type RF cavity of the microtron.The frequency of the RF cavity is 2998.2 MHz,and an accelerating voltage of over 1 MV can be obtained in the RF cavity gap.The electron energy gain can reach about 0.9 MeV per pass.At the same time,CST Particle Studio was used to simulate the electron generation and acceleration process in the ultra-high frequency cavity with thermionic cathode.The effects of microwave power amplitude,magnetic field strength,cathode emission position,and beam channel on the microtron were studied.The coupler design considering beam loading was also completed,and the operating parameters of the RF cavity during steady-state operation were obtained.The simulation results show that when the beam loading reaches steady state,with a cathode emission capacity of 20 A/cm2,a current of 24 mA can be induced,a beam energy of 6 MeV,an energy spread of 0.64%,and a transverse RMS size of 3.3 mm×1.8 mm can be obtained.关键词
电子回旋加速器/谐振腔/束流仿真/束流负载效应/耦合度Key words
microtron/RF cavity/beam simulation/beam loading/coupling coefficient分类
电子信息工程引用本文复制引用
董自强,裴士伦,张通,邵琢瑕,王琳,陆亚林..S波段6 MeV紧凑型电子回旋加速器仿真设计与模拟研究[J].强激光与粒子束,2025,37(4):86-92,7.基金项目
中国科学院科研仪器设备研制项目(ZDZBGCH2021001) （ZDZBGCH2021001）
