Stationary-Pic Simulation of High Stability Microwave Discharge Ion Sources

The paper presents the study, through simulation, of the High Stability Microwave Ion Sources [1] for the production of proton beams up to 100 mA. The developed code is based on a novel Stationary Particle In Cells method developed for three-dimensional stationary plasma simulation. The Boris solver was used to compute the motion of electrons, protons, ${{\text{H}}_2}^ + $ and ${{\text{H}}_3}^ + $ ions in three-dimensional fields maps: 2.45 GHz electromagnetic wave, magnetostatic and electrostatic. Ionization processes, elastic and inelastic Coulomb collisions and losses in the walls are considered. The paper will also show how the plasma reaches the equilibrium between the new particle microwave generation, the losses and the extracted beam.