Abstract
The design of a 95 GHz third-harmonic smooth-bore gyroklystron amplifier utilizing an axis-encircling electron beam is presented. Using a self-consistent simulation code, a parameter search was performed to determine the optimum device characteristics for a gyroklystron operating in the circular TE/sub 31/ mode. For a 70 kV, 5 A electron beam with v/sub /spl perp///v/sub /spl par//=2 and /spl Delta/v/sub z//v/sub z/=10%, the three-cavity gyroklystron is predicted to yield 70 kW with 20% efficiency, 0.2% bandwidth, and a saturated gain of 32 dB. CW operation would yield a tolerable wall loading of 2 kW/cm/sup 2/. >
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