Simulation study on beam loss in the alpha bucket regime during SIS-100 proton operation

摘要

AbstractCrossing the transition energyγtin synchrotrons for high intensity proton beams requires well tuned jump schemes and is usually accompanied by longitudinal emittance growth. In order to avoidγtcrossing during proton operation in the projected SIS-100 synchrotron special high-γtlattice settings have been developed, in order to keepγtabove the beam extraction energy. A further advantage of this scheme is the formation of alpha buckets which naturally lead to short proton bunches, required for the foreseen production and storage of antiprotons for the FAIR facility. Special attention is turned on the imperfections of the superconducting SIS-100 magnets because together with the high-γtlattice settings, they could potentially lead to enhanced beam loss. The aim of the present work is to estimate the beam loss by means of particle tracking simulations.