强激光与粒子束, 2011, 23 (6): 1675, 网络出版: 2011-07-04
轴向分区双频磁绝缘线振荡器的数值模拟
Simulation of bifrequency-MILO with axial partition
磁绝缘线振荡器 双频 数值模拟 高功率微波 轴向分区 magnetically insulated transmission line oscillato bifrequency numerical simulation high power microwave axial partition
摘要
为了便于模式变换器的设计，达到双频微波都能集中辐射的目的，提出一种轴向分区的双频磁绝缘线振荡器，该器件束波互作用区为中间隔开、两端不同周期、不同深度的慢波结构，使电子在上下游与不同频率特性的慢波结构进行束波互作用，得到稳定的双频微波输出。使用2.5维全电磁粒子模拟软件进行数值模拟，在工作电压450 kV，电流40 kA条件下输出微波功率为1.4 GW，功率效率约为7%,输出的微波频率分别为1.25 GHz和1.65 GHz，两者频谱幅度相差约为1.5 dB，模式为TEM模。
Abstract
A novel bifrequency-magnetically insulated transmission line oscillator(MILO) with axial partition is put forward. The interaction field between beam and microwave of this kind of MILO is separated into 2 pieces of slow wave structure(SWS) which have different period and cavity depth. Bifrequency microwave is gained because of interaction between beam and microwave in SWS pieces with different frequency character. A 2.5-D full electro-magnetic numerical simulation is conducted by using PIC software at diode voltage of 450 kV and beams current of 40 kA. A microwave pulse TEM mode with power of 1.4 GW and an efficiency of 7% is obtained. Output frequencies are 1.25 GHz and 1.65 GHz respectively with an amplitude difference of 1.5 dB.
文杰, 范植开, 陈代兵, 王冬, 秦奋, 田扬超. 轴向分区双频磁绝缘线振荡器的数值模拟[J]. 强激光与粒子束, 2011, 23(6): 1675. Wen Jie, Fan Zhikai, Chen Daibing, Wang Dong, Qin Fen, Tian Yangchao. Simulation of bifrequency-MILO with axial partition[J]. High Power Laser and Particle Beams, 2011, 23(6): 1675.
PDF全文
