Numerical simulation of the dynamics of a pre-modulated electron beam in the drift space of a transit klystron

Abstract

Numerical simulation of the dynamics of a pre-modulated electron beam in the drift space of a transit klystron

Medakin P.O., Nikulin R.N.,Avdeyuk O.A., Prikhodkova I.V., Gretsova N.V., Druzhinina L.V.

Incoming article date: 02.01.2021

It is indicated in the article that the study of the electron bunching process in the drift space of a transit klystron is an urgent task that allows one to establish general laws applicable to more complex models. In this connection, the behavior of the pre-modulated electron beam in the drift space of the transit klystron has been investigated. A numerical model has been implemented that takes into account the effect of space charge fields and the interaction of charged particles with elements of an electrodynamic system. A series of numerical experiments with different values ​​of the current and initial velocities of electrons, as well as their comparison with theoretical data, have been carried out. As a result of numerical experiments, data were obtained that characterize the dynamics of the electron flux in the drift space of the transit klystron at different values ​​of the initial velocity (0.5 s, 0.9 s) and cathode current (10 mA, 1A, 10A).

Keywords: flyby klystron, mathematical model, numerical simulation, large particle method, particle-particle method, drift space, convection current distribution, electron flow, multithreaded calculations, system of differential equations