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The Limiting Efficiency Values of Powerful Klystrons

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Abstract

The results of a theoretical study of electron beam bunching processes in high-power multicavity klystrons are presented. The studies were carried out using one-dimensional and two-dimensional numerical models for different values of the space charge parameter. The data on the effect of stratification effects on the efficiency of klystrons with a different number of bunching cavities are presented. As a result of the optimization of the cavity parameters, the limiting efficiency values that are achievable at different values of the space charge parameter have been determined. The obtained fundamental dependence of the limiting efficiency values on the space charge parameter is compared with the empirical estimates of other specialists, as well as with experimental data obtained for record klystrons in leading klystron centers in our country and abroad. It is shown that the space charge parameter is a universal characteristic that determines the dependence of the efficiency of multicavity klystrons on the properties of the electron flow. The prospects of increasing the efficiency of multicavity klystrons are indicated.

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Funding

This work was supported by the Ministry of Science and Higher Education within the framework of works on the state assignment for the Crystallography and Photonics Federal Scientific Research Institute, Russian Academy of Sciences.

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Authors and Affiliations

  1. Institute of Laser and Information Technologies, Crystallography and Photonics Federal Scientific Research Institute, Russian Academy of Sciences, 140700, Shatura, Moscow oblast, Russia

    V. E. Rodyakin & V. N. Aksenov

  2. Department of Physics and International Laser Center, Moscow State University, 119992, Moscow, Russia

    V. N. Aksenov

Authors
  1. V. E. Rodyakin
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  2. V. N. Aksenov
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Correspondence to V. E. Rodyakin or V. N. Aksenov.

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Translated by A. Nikolskii

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Rodyakin, V.E., Aksenov, V.N. The Limiting Efficiency Values of Powerful Klystrons. Moscow Univ. Phys. 76, 333–341 (2021). https://doi.org/10.3103/S0027134921050131

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  • DOI: https://doi.org/10.3103/S0027134921050131

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