Abstract
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.
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Original Russian Text © O.I. Louksha, D.B. Samsonov, G.G. Sominskii, A.A. Tsapov, 2012, published in Zhurnal Tekhnicheskoi Fiziki, 2012, Vol. 82, No. 6, pp. 101–105.
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Louksha, O.I., Samsonov, D.B., Sominskii, G.G. et al. Improvement of the helical electron beam quality and the gyrotron efficiency by controlling the electric field distribution near a magnetron injection gun. Tech. Phys. 57, 835–839 (2012). https://doi.org/10.1134/S1063784212060187
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DOI: https://doi.org/10.1134/S1063784212060187