Beam Loss Studies for the CERN PS Booster using FLUKA

In view of future upgrade plans, the beam loss monitor (BLM) coverage of the four PS Booster (PSB) rings was reviewed. FLUKA studies at Linac4 injection and PSB extraction energies were performed to simulate the loss patterns. The results of these studies, presented in this paper, have led to the proposal to double the number of beam loss monitors in the PSB. vertically oriented, and placed downstream of the 1 st bending magnet in-between rings 1 and 2 and rings 3 and 4. These monitors will have to be consolidated in any case, as they are not fabricated anymore. The consolidation plan foresees a replacement by LHC-type monitors, which are based on parallel plate ionization chambers (IC) (2) with an active volume of 1.5 l and by the recently developed smaller and flat monitors (FLAT- IC) (3) in case they would appear to be sensitive enough to detect the losses arising from the main aperture restrictions of the PSB. The FLUKA simulations reported here were performed with the goal to optimize the type, position and number of the new BLMs for the current and future beam energies and to verify if the present coverage would still be sufficient for the future running conditions.