Operation of a 1.5-MW, 110-GHz gyrotron depressed collector experiment

We report results from a 1.5 MW, 110 GHz gyrotron experiment. Operating in three microsecond pulses at 96 kV and 40 A, 1.4 MW was obtained in the TE/sub 22,6/ mode when power was taken along the axis. New results with an internal mode converter and depressed collector are presented.