End-to-End Simulation of Bunch Merging for a Muon Collider

Yu Bao, Gail Hanson, Robert Palmer, Diktys Stratakis, Henderson, Stuart (Ed.), Akers, Evelyn (Ed.), Satogata, Todd (Ed.), Schaa, Volker R.W. (Ed.)
Muon accelerator beams are commonly produced indirectly through pion decay by interaction of a charged particle beam with a target. Efficient muon capture requires the muons to be first phase-rotated by rf cavities into a train of 21 bunches with much reduced energy spread. Since luminosity is proportional to the square of the number of muons per bunch, it is crucial for a Muon Collider to use relatively few bunches with many muons per bunch. In this paper we will describe a bunch merging
more » ... that should achieve this goal. We present for the first time a complete end-to-end simulation of a 6D bunch merger for a Muon Collider. The 21 bunches arising from the phase-rotator, after some initial cooling, are merged in longitudinal phase space into 7 bunches, which then go through 7 paths with different lengths and reach at the final collecting "funnel" at the same time. The final single bunch has a transverse and a longitudinal emittance that matches well with the subsequent 6D rectilinear cooling scheme.
doi:10.18429/jacow-ipac2015-tupwi040 fatcat:4nptn6phgbb6zlp5c4uk4xah74