Studies of gyrotron second harmonic operation in high-order modes

Abstract

In this paper, the authors investigate possibilities of gyrotron operation in high order modes on the second cyclotron harmonic. Results are obtained with the use of the well-known gyrotron code MAGY. Particular attention is paid to finding the trade-off between Ohmic losses and the interaction efficiency when choosing the cavity geometry. Competition of the operating mode with the modes operating on the fundamental harmonic is analyzed.