Title :
Efficient Ka-band second-harmonic slotted peniotron
Author :
McDermott, D.B. ; Hirata, Y. ; Dressman, L.J. ; Gallagher, David A. ; Luhmann, N.C., Jr.
Author_Institution :
Dept. of Appl. Sci., California Univ., Davis, CA, USA
fDate :
6/1/2000 12:00:00 AM
Abstract :
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
Keywords :
cavity resonators; electron beams; electron guns; gyrotrons; harmonic generation; millimetre wave generation; millimetre wave oscillators; millimetre wave tubes; stability; π/2-mode; 3.5 A; 33 GHz; 52 percent; 58 percent; 70 kV; Davis; Ka-band second-harmonic slotted peniotron; Northrop Grumman; Rolling Meadows; University of California; axis-encircling electron beam; competing gyrotron interactions; cusp electron gun; device efficiency; diffraction coupled cavity; efficiency; electron efficiency; gyrotron interactions; harmonic peniotron; lowest-order mode; mode competition; peniotron; relative immunity; slotted four-vane circuit; slotted second-harmonic peniotron; stability; Circuit stability; Coupling circuits; Cranes; Cyclotrons; Diffraction; Electron beams; Electron traps; Gyrotrons; Optical coupling; Radio frequency;
Journal_Title :
Plasma Science, IEEE Transactions on
