APPROACHES TO HIGH INTENSITIES FOR FAIR (

An accelerator complex is planned to generate highest intensities of heavy ion and proton beams for the new Facility for Antiproton and Ion Research (FAIR) at GSI. The two new synchrotrons, SIS100 and SIS300 which generate the primary beams for the FAIR target stations, will be served by the existing GSI accelerators, UNILAC and SIS18. In order to reach the desired intensities close to 10 12 uranium ions and 5 x 10 13 protons per pulse, a substantial upgrade program of the existing facility is presently being conducted. The status and the technical subprojects of these upgrade programs and the concepts for approaching the FAIR intensity goals are described. VARIS SOURCE FOR HIGH INTENSITY URANIUM BEAMS MEVVA ion sources [1] are well suited to generate high current beams of metal ions. Especially for high density metallic ion beams, the MEVVA IV ion source has proven its capability at GSI over many years. However, until now it was not possible to reach the design current for uranium ions for injection into the UNILAC-RFQ. Therefore, based on a MEVVA ion source a new Vacuum ARc Ion Source (VARIS) has been developed and taken into operation successfully.