Front-End Design Studies for a Muon Collider

Using muons instead of electrons is a promising approach for a lepton-lepton collider with energies beyond that available at the proposed International Linear Collider. At this time a self-consistent design of a high-luminosity muon collider has not been completed. However, a lot of progress has been made in simulating cooling and parts of other systems that could play a role in an eventual collider design. In this paper we look at frontend system designs that begin with a single pion bunch produced from a high power mercury target. We present ICOOL simulation results for phase rotation and charge separation of the muon beams. A bent solenoid is used for high-efficiency separation of the positive and negative muon beams. The subsequent transport system produces two parallel beams, 5 m apart in the horizontal plane. The system produces 0.27 μ⁺/p and 0.28 μ^-/p in a conveniently-chosen longitudinal phase space box.