Short-wavelength gyrotrons with quasi-regular and sectional cavities

In gyrotrons, in order to increase the generation efficiency at a high cyclotron harmonic, it was proposed to use the transition to stable operation in the TWT mode by adding irregularity (absorber) on the wall of the cavity. The paper presents the results of the study of such a scheme. The results of a theoretical study of frequency tuning with a change in the operating magnetic field in a terahertz gyrotron with a quasi-regular sectioned cavity with periodic phase correctors are also presented.