Design on a 100 kW-level Gyrotron Operating at 30 GHz

in this paper, we present a design on a 30 GHz 100 kW-level gyrotron. The cold-cavity of the gyrotron has been studied by using an in-house gyrotron simulation code and CST microwave studio, respectively. Meanwhile, in the hot-cavity analyses, the behavior of multi-mode beam-wave interaction has been studied in detail by using PIC simulation with the help of CST particle studio. The results present that the gyrotron can operate at TE0.3 mode stably with the output power of 150 kW under the operating conditions: beam voltage of 50 kV, beam current of 10 A, magnetic field of 1.14 T, and pitch factor of 1.3.