Design and Testing of an Electron-Gun Producing a Segmented Sheet Beam for a Quasi-Optical Gyrotron

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. These 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 that for the unsegmented beam is 68 A. The gun has been tested, and has operated essentially as predicted by 2D and 3D theory. In particular, the overall beam shape is largely undistorted, and the beamlets are, for most cases, well aligned.


Published in:
Ieee Transactions on Electron Devices, 39, 3, 720-726
Year:
1992
ISSN:
0018-9383
ISBN:
0018-9383
Laboratories:
SPC
CRPP




 Record created 2008-04-16, last modified 2018-09-13


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