Investigations into frictional cooling for producing a cold muon beam
A high luminosity muon collider will require six orders of magnitude reduction in the phase space volume between the production of the muons and injection into the collider ring. Novel techniques must be developed to achieve this reduction within the lifetime of the muon. One possible approach is 'frictional cooling', where muons are decelerated to energies below the Bragg peak, brought to an equilibrium energy, and then reaccelerated. Simulation studies will be presented, as well as the status of an experimental demonstration of the frictional cooling process.
Proton driven plasma wakefield acceleration
Plasma wakefield acceleration, either laser driven or electron-bunch driven, has been demonstrated to hold great potential. However, it is not obvious how to scale these approaches to bring particles up to the TeV regime. We discuss the possibility of proton-bunch driven plasma wakefield acceleration, and show that high energy electron beams could potentially be produced in a single accelerating stage starting from a high energy proton beam.