Dielectric Loss Dissipation and Power Capacity Analysis for W Band Gyro-TWT

The dielectric load Gyro-TWT is a primary high power millimeter source, and its power capacity is limited by the dielectric temperature induced by the RF attenuation. The heavy outgassing was observed when the Gyro-TWT operated in long pulse length in the experiment. The heat dissipated on the dielectric and its distribution is analyzed. Then the thermal performance for the different operating conditions is investigated. And the average power capacity in different pulse lengths is evaluated.