Space-charge limits of multiturn injection in HIDIF

Abstract

2D Particle-In-Cell (PIC) computer simulations of a 20 turn stacking with a corner septum in the Heavy Ion Driven Ignition Facility (HIDIF) scheme with a space charge dominated 400 mA linac beam reveal that the losses are of the order of 15% and the increase in emittance is about 15–20-fold. The phase-space dilution factor is 2.8 without space charge and 5 with space charge. Debunching of a train of micropulses is studied with a 3D PIC code.