Repetitive generation of X-band superradiation at 3-GW peak power

The operation of a nonstationary relativistic X-band BWO in the mode of production of quasicontinuous superradiation pulse trains has been studied. The average power of superradiation pulses generated by packets of duration 10–100 s with a repetition rate of 300 Hz was ∼1 kW. The radiation peak power reached ∼3 GW. When the device operated in a reduced magnetic field focusing the electron beam, the factor of conversion of electron beam power to pulsed electromagnetic radiation was 0.75–0.8. Phase lock conditions for the high-frequency carrier of the radiation in relation to the leading edge of the accelerating voltage pulse have been investigated.