强激光与粒子束2024，Vol.36Issue(3)：72-76,5.DOI:10.11884/HPLPB202436.230294
高Q值单间隙同轴谐振腔的物理设计与实验研究
Design and measurement of high Q-factor coaxial resonant cavity
吕彦奎 1阳福香 1党方超 1葛行军 1贺军涛1
作者信息
- 1. 国防科技大学前沿交叉学科学院,长沙 410073
- 折叠
摘要
Abstract
With the development of high power microwave sources towards high power,high frequency and long pulse,coaxial relativistic klystron amplifiers(RKA)have become one of the research hotspots in recent years.However,its development is limited by self-excited oscillation,etc.Therefore,a high Q-factor single-gap coaxial resonator is designed in this paper to suppress the self-oscillation caused by TEM mode leakage of the coaxial RKA.Through the theoretical analysis and simulation of TM01 mode and TEM mode conversion in a single-gap coaxial resonator,it is found that the depth difference and axial dislocated values of the upper and lower slots of the coaxial resonator have a great influence on the change of its Q factors.When the depth difference and axial dislocation value of the upper and lower slots are 0.3 mm and 0 mm respectively,the Q factor of the coaxial resonator has the maximum value(18764).This means that the conversion between the two modes in the resonator is minimal,greatly reducing the risk of self-oscillation between several cascaded coaxial resonators.When three cascaded high-Q-factor single-gap coaxial resonators are applied to the compact coaxial RKA,the output microwave power of the device is stable,the spectrum is pure,and there are no self-excited oscillations in the simulation and experiments.关键词
同轴相对论速调管放大器/自激振荡/高Q值/单间隙同轴谐振腔Key words
coaxial relativistic klystron amplifier/self-oscillation/high Q-factor/single-gap coaxial resonator分类
信息技术与安全科学引用本文复制引用
吕彦奎,阳福香,党方超,葛行军,贺军涛..高Q值单间隙同轴谐振腔的物理设计与实验研究[J].强激光与粒子束,2024,36(3):72-76,5.
