Initial results of 95 GHz gyrotron with water cooled magnet

A 95 GHz long pulse gyrotron with water cooled copper magnet was assembled. The gyrotron operates at TE02 mode and second harmonic. A ~1.8T magnetic field is produced by water cooled copper electro-magnet operating continuously in a 50% duty cycle of few seconds pulses. The magnet and the gyrotron have immediate turn on time when the cathode is worm. Initial results will be presented.