Test results of the prototype for frequency step tunable 105-170 GHz 1MW Gyrotron

摘要

The report presents results of investigation of the possibility to optimise numerically and experimentally helical electron beam formation system and processes of mode interaction in the electron beam-cavity system for the prototype of 105-170 GHz 1 MW step tunable gyrotron with different operating mode. Parameters are optimized to achieve maximum efficiency of the gyrotron with an acceptable Ohmic load on the cavity. The influence of mode competition, electron beam potential depression and beam energy recovery is investigated also. Possibility to optimize mode converter system for different operating modes is discussed.