LOW-ENERGY BEAM TRANSPORT OF INTENSE AND PARTIALLY SPACE-CHARGE-NEUTRALIZED ION-BEAMS

High-perveance ion beams are required for heavy-ion inertial-fusion dr ivers and cannot be transported without a reduction of space charge fo rces by space charge neutralization. The rearrangement of beam ions du e to the self-field of partly neutralized beams is one source of r.m.s . emittance growth in low-energy sections. Calculations including the influence of compensating electrons have been carried out. A low-energ y beam line is being set up to investigate the influence of partial sp ace charge neutralization on the transverse beam emittance of high-per veance beams (typically 9 keV, 3.5mA He+). Theoretical assumptions and results of numerical simulations are presented and compared with firs t experimental results.