Title :
Design and testing of an electron gun producing a segmented sheet beam for a quasi-optical gyrotron
Author :
Read, Michael E. ; Dudas, Alan J. ; Petillo, John J. ; Tran, M.Q.
Author_Institution :
Phys. Sci. Inc., Alexandria, VA, USA
fDate :
3/1/1992 12:00:00 AM
Abstract :
A high-power sheet beam electron gun for a quasi-optical gyrotron has been developed. The gun produces two beams with rectangular cross sections, with one beam segmented into 11 beamlets. The beamlets are spaced so as to be in line with the maxima of the RF field profile in the resonator of a 120-GHz quasi-optical gyrotron. The maximum current in the segmented beam is nominally 34 A, while the unsegmented beam is 68 A. The gun has been tested, and it has operated essentially as predicted by 2-D and 3-D theory. In particular, the overall beam shape is largely undistorted, and the beamlets are, for most cases, well aligned
Keywords :
electron guns; electron tube testing; gyrotrons; 120 GHz; 34 A; 68 A; EHF; MM-wave type; aligned beamlets; electron gun; microwave tubes; quasi-optical gyrotron; quasioptical type; rectangular cross sections; resonator; segmented sheet beam; testing; Current density; Electron beams; Geometrical optics; Gyrotrons; Magnetic separation; Mirrors; Optical resonators; Radio frequency; Solids; Testing;
Journal_Title :
Electron Devices, IEEE Transactions on
