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general equation of electron-wave synchronous interaction is obtained in gyrotron oscillator,in which the effects of guiding center drift and phase of RF field profile is considered.The interactionefficiency is calculated for the second harmonic operation of single TE_(021) mode for a double cavity gyrotronoscillator model,in which the RF field profile and operating parameters of the gyrotron oscillator areregulated in order to get optimum efficiency.It is shown that the efficiency of 53 percent can be obtained for a=1.5.The characteristic of the double cavity configuration is discussed.The bunching processes of thedouble cavities are compared with that of single cavity.The effects of guiding center drift and RF field profilephase on the beam-wave interaction are analysed.
general equation of electron-wave synchronous interaction is obtained in gyrotron oscillator, in which the effects of guiding center drift and phase of RF field profile is considered. The interactionefficiency is calculated for the second harmonic operation of single TE_ (021) mode for a double cavity gyrotronoscillator model, where the RF field profile and operating parameters of the gyrotron oscillator are regulated in order to get optimum efficiency. It is shown that the efficiency of 53 percent can be obtained for a = 1.5. The characteristic of the double cavity configuration is discussed. the bunching processes of the double cavities are compared with that of single of the cavity. The effects of guiding center drift and RF field profilephase on the beam-wave interaction are analysed.