A muon collider scenario based on stochastic cooling

Abstract

The most severe limitation to the muon production for a large-energy muon collider is the short time allowed for cooling the beam to dimensions small enough to provide reasonably high luminosity . The limitation is caused by the short lifetime of the particles that, for instance, at the energy of 100 GeV is of only 2.2 ms . Moreover, it appears to be desirable to accelerate the beam quickly, with very short bunches of about a millimeter so it can be made immediately available for the final collision.This paper describes the requirements of single-pass, fast stochastic cooling for very short bunches. Bandwidth, amplifier gain and Schottky power do not seem to be of major concern. Problems do arise with the ultimate low emittance that can be achieved, the value of which is seriously affected by the front-end thermal noise.Since mixing within the beam bunches is completely absent, methods are required for the regeneration of the beam signal with external and powerful magnetic lenses . The feasibility of these methods are crucial for the development of the muon collider . These methods will be studied in a subsequent report .

Enhanced optical cooling of muon beams

“…Stochastic and optical stochastic cooling (OSC) of particle beams in rings were considered in [1][2][3]. Our scheme is close to the OSC one.…”