W-Band heavily loaded TE/sub 01/ gyrotron traveling wave amplifier

This paper explains about the heavily loaded W-Band TE/sub 01/ mode Gyro-TWT, which is currently being tested at UCD. The amplifier is predicted to generate 140 kW at 94 GHz with 50 dB saturated gain, 28% efficiency and 5% bandwidth. For stability and wide bandwidth, it is driven by a 100 KV, 5A MIG electron beam with a velocity ratio of 1.0. The characteristics of the amplifier also described.