The prospects for combined high-frequency focusing usage in high-current heavy ion linacs

The study is made into a channel for acceleration and focusing of heavy ions with mass-charge ratio A/q = 20 in a high-current linear accelerator. The channel is designed to form and accelerate charged particle beams from 100 keV/u up to 8.5 MeV/u. Functionally the channel comprises a pre-stripping section and a main part. Ion stable motion in pre-stripping and main sections is provided by combination of phase-alternating focusing with quadrupole high-frequency one. A way of implementation of this focusing type based on the IH structures is suggested. Numerical simulation of the beam dynamics has been carried out. The channel makes acceleration of ion beams with current up to 10 mA possible.