Review and Status of Frictional Cooling

Muon cooling is the main technological obstacle in the building of a muon collider. A muon cooling scheme based on Frictional Cooling holds promise in overcoming this obstacle. An experiment designed to demonstrate the Frictional Cooling concept using protons was undertaken at Nevis Labs. Although the results of this experiment were inconclusive in the observation of cooling, the data allowed the qualification of detailed simulations which are used to simulate the performance of a Muon Collider. The lessons learned from this endeavor have gone into the planning of a second demonstration experiment to be undertaken at Max-Planck-Institute (MPI) Munich. The status of the Frictional Cooling simulations and experimental program are summarized