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Efficient Ka-band second-harmonic slotted peniotron

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5 Author(s)
McDermott, D.B. ; Dept. of Appl. Sci., California Univ., Davis, CA, USA ; Hirata, Y. ; Dressman, L.J. ; Gallagher, D.A.
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A harmonic peniotron has been designed for high efficiency and relative immunity to mode competition from gyrotron interactions. The device employs a 70-kV, 3.5-A, axis-encircling electron beam. To ensure stability from competing gyrotron interactions, the peniotron will operates in the lowest-order mode of a slotted four-vane circuit, the π/2-mode. The cavity is strongly diffraction coupled for a high circuit efficiency. The 33-GHz, slotted second-harmonic peniotron is predicted to yield 125 kW with an electron efficiency of 58% and a device efficiency of 52%. The device is being constructed at the University of California at Davis and is driven by a recently developed Northrop Grumman (Rolling Meadows, IL) cusp electron gun

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Plasma Science, IEEE Transactions on  (Volume:28 ,  Issue: 3 )