Open AccessMAXIMUM TRANSFORMER RATIO AT WAKEFIELD EXCITATION AT BLOWOUT REGIME IN PLASMA BY ELECTRON BUNCH UNDER SEMI-GAUSSIAN CHARGE DISTRIBUTION
Author(s) -
D.S. Bondar,
В. А. Маслов,
I.N. Onishchenko
Publication year - 2020
Publication title -
problems of atomic science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 17
eISSN - 1562-6016
pISSN - 1682-9344
DOI - 10.46813/2020-127-062
Subject(s) - physics , excitation , plasma , electron , transformer , atomic physics , nonlinear system , gaussian , electric field , computational physics , quantum electrodynamics , voltage , nuclear physics , quantum mechanics
Using 2d3v code LCODE, the numerical simulation of nonlinear wakefield excitation in plasma by shaped relativistic electron bunch with charge distribution, which increases according to Gaussian charge distribution up to the maximum value, and then decreases sharply to zero, has been performed. Transformer ratio, as the ratio of the maximum accelerating field to the maximum decelerating field inside the bunch, and accelerating the wakefield have been investigated taking into account nonlinearity of the wakefield. The dependence of the transformer ratio and the maximum accelerating field on the length of the bunch was investigated with a constant charge of the bunch. It was taken into account that the length of the nonlinear wakefield increases with increasing length of the bunch. It is shown that the transformer ratio reaches its maximum value for a certain length of the bunch. The maximum value of the transformer ratio reaches six as due to the profiling of the bunch, and due to the nonlinearity of the wakefield.