Effect of loss-loaded and guiding center variation on the stability of the TE11 mode fundamental gyro-TWT

Based on steady-state multimode theory, the effect of loss-loaded and guiding center variation on gyro-TWT operation stability was discussed. The results show that the decrease of the conductivity can decrease the input power for keeping the stability. And the augment of the guiding center radius can make the conductivity for fully suppressing the backward wave oscillation increase, which can alleviate the difficulty for heat dissipation. All improvement for the operational stability will enhance the output power and the gain.