Computer simulation of high-current ion induction linac using macroparticles

The 2d3v particle-in-cell simulation results of transport and acceleration of hollow high-current ion beam compensated by electron beam in 3 magnetoinsulated accelerating gaps are presented. The beam currents, and the external magnetic field magnitudes are close to NSC KIPT experiments. It is shown, that at small acceleration rates, when the compensating electron beam kinetic energy is higher than a potential barrier of the accelerating field, the quality of ion distribution function on the accelerator exit practically is not worsened in comparison with the transportation mode. In case of large acceleration rate, when the electron beam kinetic energy is not enough for overcoming accelerating field potential barrier, the quality of ion distribution function on the accelerator exit is essentially worsened in comparison with the transportation mode. It is shown, that the optimized in space and time injection of additional high current electron beams in cusps results in increase of accelerated ion beam monochromaticity and to reduction it divergency on an acceleration exit