Beam dynamics simulations for the fermilab recycler ring barrier buckets

The recycler ring (RR) is an 8 GeV pbar storage ring for future ppbar collider operations at Fermilab. By design, the beam in the recycler is stored in three segments (hot, cold and newly transferred beam) azimuthally, using barrier buckets. Properties of the beam in the recycler are found to be affected by stray magnetic field caused by the main injector acceleration ramping process. Here we present results of our measurements of the longitudinal emittance growth of the beam in the recycler ring due to the main injector ramp and the results of model simulation of this effect using a multi-particle beam dynamics simulation program (ESME)