Analysis of the Gyro-Back Wave Oscillations of the TE21 Mode
Zhang Tao①②,Jiao Chong-qing③,Luo Ji-run①
①Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China; ②Graduate University of Chinese Academy of Sciences, Beijing 100039, China; ③Beijing Key Laboratory of High Voltage & EMC, North China Electric Power University, Beijing 102206, China
Abstract：Based on the linear theory of gyro-TWA, this paper is focused on the numerical simulations for the relations of the starting length and starting frequency with beam radius, voltage, velocity ratio, beam current and magnetic field for a gyro-BWO operating in the TE21 mode at fundamental or second harmonic and the corresponding physical mechanisms is explained. And the effect of distributed wall losses on the suppression of the TE21 mode gyro-BWO is discussed. The results in this paper are helpful for the design of gyro-TWA and gyro-BWO’s.
2010, Vol. 32 
