Antiproton stacking and unstacking in the Fermilab Recycler Ring

The Fermilab Recycler Ring (RR) is intended to be used as a future antiproton storage ring for the Run II proton-antiproton collider operation. It is proposed that about 40mA of antiproton beam from the Accumulator Ring will be transferred to the Recycler once for every two to three hours, stacked and cooled. This operation continues for about 10 to 20 hours depending on the collider needs for antiprotons. Eventually, the cooled antiproton beam will be unstacked from the Recycler and transferred to the Tevatron via the Main Injector. We have simulated stacking and unstacking of antiprotons in the Recycler using multiparticle beam dynamics simulation code ESME. In this paper we present results of these simulations.