Experimental study of CRM with simultaneous excitation of traveling and near-cutoff waves (CARM-gyrotron)

A new variety of RF sources is studied experimentally. In the cyclotron autoresonance maser (CARM)-gyrotron with an open "gyrotron-type" cavity, two regimes of operation are observed: the conventional high-harmonic gyrotron regime, and the CARM-gyrotron regime with effective radiation of the traveling CARM mode. The two-mode character of the electron-wave interaction in the CARM-gyrotron regime was proved experimentally.