Design and Experiment on a 95-GHz 400 kW-Level Gyrotron

In this brief, a 400 kW-level 95-GHz gyrotron has been designed and measured. By linear analysis, TE+22.6 mode is selected as the operating mode. Through the time-dependent multimode self-consistent analysis, main mode TE+22.6 can steadily operate at the conditions: beam voltage of 51.6 kV, beam current of 24 A, beam radius of 11.75 mm, and magnetic field of 3.62 T. With the help of CST microwave studio and numerical calculation code, the single-disk vacuum window has been designed for the transmission of the main mode. The measured results show that the output power of 430 kW and the frequency of 95.3 GHz are obtained at the current of 24 A, the voltage of 51.6 kV, and the magnetic field of 3.615 T.