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The ferroelectric cathode is a cold cathode based on surface plasma, that is not widely known to the gyrotron community. It was assembled and operated is several setups of gyrotrons. Radiation was obtained in the Ka band and the W band. Power in the range of 1–30 kW with interaction efficiency of 10–15% were measured. Experiential results and the potential exploitation of the cathode will be presented.
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.
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