Analysis and suppression of self-oscillation in high gain relativistic klystron amplifier

Wu Yang; Xie Hongquan; Li Zhenghong; Zhang Yunjian; Ma Qiaosheng; Cheng Hui

doi:10.3788/HPLPB201426.033001

Volume 26 Issue 03

Mar. 2014

Turn off MathJax

Article Contents

Article Navigation > High Power Laser and Particle Beams > 2014 > 26(03): 033001

Wu Yang, Xie Hongquan, Li Zhenghong, et al. Analysis and suppression of self-oscillation in high gain relativistic klystron amplifier[J]. High Power Laser and Particle Beams, 2014, 26: 033001. doi: 10.3788/HPLPB201426.033001

Citation:

Wu Yang, Xie Hongquan, Li Zhenghong, et al. Analysis and suppression of self-oscillation in high gain relativistic klystron amplifier[J]. High Power Laser and Particle Beams, 2014, 26: 033001. doi: 10.3788/HPLPB201426.033001

Citation:

PDF( 5415 KB)

Analysis and suppression of self-oscillation in high gain relativistic klystron amplifier

doi: 10.3788/HPLPB201426.033001

1.
Institute of Applied Electronics,CAEP,P.O.Box 919-1015,Mianyang,621900,China;
2.
Science and Technology on High Power Microwave Laboratory,Mianyang 621900,China;
3.
College of Science,Southwestern University of Science and Technology,Mianyang 621010,China

Received Date: 2013-09-08
Rev Recd Date: 2013-11-11
Publish Date: 2014-03-07

Abstract

Abstract

The mechanism of high order mode excitation in high gain relativistic klystron amplifier is explored in the 2D and 3D PIC simulations. The impact of the asymmetric mode excitation is excluded as the 2D simulation result is in accord with the 3D simulation. The formula for startup current of high order mode excitation is developed based on theoretical model. And RF lossy material is introduced to suppress high order mode self-oscillation. Mode control is realized in the simulation with the RF output power of 1.95 GW, and the corresponding gain is 62.8 dB.
- relativistic klystron amplifier,
- high gain,
- high order mode,
- self-oscillation