Space charge studies in the PS

In this paper the results of Machine Development (MD)studies conducted at the CERN Proton Synchrotron (PS) are presented. The main focus was the investigation of new working points in an effort to characterize and potentially improve the brightness for LHC-type beams in view of the LHC Injectors Upgrade (LIU). Various working points were compared in terms of losses and emittance evolution. Since space charge and the resonances it excites are the main cause for emittance blow-up and losses, tunes close to excited resonances were carefully studied. Mitigation techniques,such as bunch flattening using a double harmonic RF system,were also tested.