Improvement of the helical electron beam quality and the gyrotron efficiency by controlling the electric field distribution near a magnetron injection gun

A technique for controlling the electric field distribution near the cathode of a magnetron injection gun is developed. The feasibility of improving the quality of a helical electron beam by optimizing the electric field distribution in a pulsed 4-mm-wave gyrotron is studied theoretically and experi...

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Published in:Technical physics 2012-06, Vol.57 (6), p.835-839
Main Authors: Louksha, O. I., Samsonov, D. B., Sominskii, G. G., Tsapov, A. A.
Format: Article
Language:English
Subjects:
Accelerators
Classical and Continuum Physics
Electron and Ion Beams
Electrons
Nuclear radiation
Physics
Physics and Astronomy
Plasma physics
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description A technique for controlling the electric field distribution near the cathode of a magnetron injection gun is developed. The feasibility of improving the quality of a helical electron beam by optimizing the electric field distribution in a pulsed 4-mm-wave gyrotron is studied theoretically and experimentally. Field distributions are obtained that minimize the electron velocity spread in the beam, coefficient of electron reflection from a magnetic mirror, and intensity of parasitic low-frequency oscillations. It is demonstrated that the gyrotron efficiency can be increased through a rise in the beam quality at the optimized electric field distribution.
doi_str_mv 10.1134/S1063784212060187
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subjects Accelerators
Classical and Continuum Physics
Electron and Ion Beams
Electrons
Nuclear radiation
Physics
Physics and Astronomy
Plasma physics
title Improvement of the helical electron beam quality and the gyrotron efficiency by controlling the electric field distribution near a magnetron injection gun
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