Laser cooling of relativistic heavy-ion beams for FAIR

Laser coolingis a powerful technique to reduce the longitudinal momentum spread of stored relativistic ion beams. Based on successful experiments at the experimental storage ringat GSI in Darmstadt, of which we show some important results in this paper, we present our plans for laser coolingof relativistic ion beamsin the future heavy-ion synchrotron SIS100 at the Facilityfor Antiprotonand Ion Researchin Darmstadt.