DESIGN OF THE MEBT FOR THE PAMELA MEDICAL FFAG

The PAMELA medical FFAG complex under design in the UK, aims to operate with both proton and carbon beams for hadron therapy. Medium energy beam transfer (MEBT) of PAMELA consists of the proton beam line coming out of the injector cyclotron, carbon beam transfer from the independent carbon 6+ injector Linac, switching dipole (SD) when both beam merge and transfer line toward the PAMELA NS-FFAG. The MEBT layout and design, which needs to incorporate the beam chopper for the intensity modulation, are discussed. The careful matching of optical functions between various components in the MEBT and beam dynamics simulations are presented.