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High performance, 70 kV third-harmonic smooth-bore gyroklystron amplifier

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5 Author(s)
J. D. McNally ; Dept. of Appl. Sci., California Univ., Davis, CA, USA ; D. B. McDermott ; Q. S. Wang ; F. V. Hartemann
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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 TE31 mode. For a 70 kV, 5 A electron beam with v/v||=2 and Δv z/vz=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/cm2

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IEEE Transactions on Plasma Science  (Volume:22 ,  Issue: 5 )