Beam Dynamics Studies for a Fast Dump System employing a Fixed Absorber Block in the CERN PS

Mechanical internal dumps are used at the Proton Synchrotron (PS) to dispose of the circulating beam. The mechanical dumps move into and through the circulating beam over a period of a few milliseconds, shaving it over many thousands of turns. The shallow impact parameter results in a low dump efficiency due to out-scattering, causing beam losses around the entire circumference of the synchrotron. In order to investigate the feasibility of a fast dump system (single turn) with higher efficiency, beam dynamics design studies were carried out to probe the feasibility of different technical options, including internal and external absorbers, using the studies made by Steinbach [1] in the 1970’s as a starting point. The studies focused on an internal dump located in Long Straight Section 31, as free space will be generated by the removal of the electrostatic septum SEH31 during the upcoming Long Shutdown 2. The external dump option was studied based on extracting through the existing extraction channel to TT2 through Straight Section 16. The feasibility of the different designs and their limitations are presented before recommendations for future work are made. This document is a summary of the full report, which can be found in CDS under the name Beam Dynamics Studies for a Fast Dump System employing a Fixed Absorber Block in the CERN PS