A Muon Collider Scheme Based on Frictional Cooling
  Muon Colliders would usher in a new era of scientific investigation in the field of high energy particle physics. The cooling of muon beams is proving to be the greatest obstacle in the realization of a Muon Collider. Monte Carlo simulations of a muon cooling scheme based on Frictional Cooling were performed. Critical issues, which require further study, relating to the technical feasibility of such a scheme are identified. Frictional Cooling, as outlined in this paper, provides sufficient six-dimensional emittance to make luminous collisions possible. It holds exciting potential in solving the problem of Muon Cooling. 
H. Abramowicz (1), A. Caldwell (2), R. Galea (3) and S. Schlenstedt   (4) ((1) Tel Aviv University, (2) Max-Planck-Institut ...