Energy Boosting of a Tandem Beam with the Oak Ridge Isochronous Cyclotron

Abstract

The energy of heavy ion beams from the 25 MV "folded" tandem now being acquired will be increased by additional acceleration in the Oak Ridge Isochronous Cyclotron (ORIC). Beams of ions up to A = 160, with energy sufficient to overcome the Coulomb barrier on lead, will be produced. The beams will enter the cyclotron through the dee stem, be directed by a magnet through the fringe and main fields to a stripping foil which lies on the appropriate orbit for acceleration. A stripping foil holder, an injection magnet, and beam transport elements will be required in addition to modifications of the ORIC rf system. Central ray data for several beams are presented. An analysis of the effects of finite beam size and emittance are presented elsewhere in these proceedings.