• C. Carli, M. Benedikt, S. Hancock
  CERN, Geneva
• V. Knuenz, I. Vonderhaid
  TU Vienna, Wien

Minimization of direct space charge tune shift at injection into the PS2 is important for the reduction of beam losses. A determining parameter for the tune shift is the bunching factor, defined as mean current over peak current for one RF period. Various longitudinal painting schemes for PS2 injection, all based on synchrotron motion, have been studied with respect to the resulting bunching factors. In particular, schemes using the SPL high-frequency chopper and different energy-spreads and offsets of the incoming beam as well as SPL beam energy modulations on have been simulated with the ESME code.