ABORT GAP CLEANING USING THE TRANSVERSE FEEDBACK SYSTEM: SIMULATION AND MEASUREMENTS IN THE SPS FOR THE LHC BEAM DUMP SYSTEM

The critical and delicate process of dumping the beams of the LHC requires very low particle densities within the 3μs of the dump kicker rising edge. High beam population in this so-called ’abort gap’ might cause magnet quenches or even damage. Constant refilling due to diffusion processes is expected which will be counter-acted by an active abort gap cleaning system employing the transverse feedback kickers. In order to assess the feasibility and performance of such an abort gap cleaning system, simulations and measurements with beam in the SPS have been performed. Here we report on the results of these studies.