Simulation of high current electron and ion beam dynamics for EBIS

Abstract

The results of the modeling of formation and transportation of ion and electron beams for EBTS BNL are presented. Simulations have been done with SAM, BEAM, and ExtraSAM codes. Some features of the codes are given as well. The codes provide high accuracy for simulating a wide range of tasks at EBTS, including electron gun, trap, collector, extraction, and transportation of the ion beam. Several examples of those computing can be found in the report. An effect of radial modulation of current density of electron beam in the magnetic field due to the sag between an edge and a center of the beam was noted.