The GSI synchrotron facility proposal for acceleration of high intensity ion and proton beams

The two-stage synchrotron complex SIS 100/SIS300 is the central part of the proposed "International Accelerator Facility for Ions and Antiprotons" at GSI. The design concept of the synchrotrons will be described with emphasis on the status of R&D work, especially on the novel rapid cycling super-conducting magnets and on the required powerful, low-frequency RF-systems. Furthermore studies are discussed, which refer to the life time of intermediate charged heavy ions and the dynamic vacuum pressure instability induced by ion beam desorption.