Muon Colliders

Abstract

Muon Colliders have unique technical and physics advantages and disadvantages when compared with both hadron and electron machines. They should thus be regarded as complementary. Parameters are given of 4 TeV and 0.5 TeV high luminosity µ + µ − colliders, and of a 0.5 TeV lower luminosity demonstration machine. We discuss the various systems in such muon colliders, starting from the proton accelerator needed to generate the muons and proceeding through muon cooling, acceleration and storage in a collider ring. Problems of detector background are also discussed.

The Future Prospects of Muon Colliders and Neutrino Factories

“…The development of Muon Colliders has been extensively reviewed in a previous Reviews of Accelerator Science and Technology article [1]. The present review updates the progress on their design and describes the substantial R&D progress towards establishing their feasibility, that has been achieved in the interim.…”

“…As pointed out in Ref. [1], the advantage of muons is that they are fundamental leptons with a mass that is a factor of 207 greater than that of their lighter companions, the electron and positron. Thus, the power emitted by a muon beam as synchrotron radiation, which scales as the fourth power of the particle mass, is reduced by nine orders of magnitude relative to that emitted by electrons having the same energy and bending radius.…”

“…As shown in Fig. 1 [1,2], which compares a figure of merit, defined as the luminosity normalized to the wall plug power required by the facility, a MC with a center-of-mass (CoM) energy greater than ~2 TeV compares quite favorably with all other lepton technologies. A MC at the TeV-scale can provide higher luminosity with significantly lower overall power consumption than any linear collider technology operating at the same CoM energy, even when one assumes the use of advanced concepts such as plasma wakefield acceleration technology.…”

Final cooling

“…Final Cooling 4 The energy loss was simulated within ICOOL and the energy-phase motion tracked with a 1-D model, obtaining final emittances of ε t ~0.000025m transversely and ε L ~0.72m with ~33% beam loss in an~76m long system.…”

A Comparison of the Quench Analysis on an Impregnated Solenoid Magnet Wound on an Aluminum Mandrel Using Three Computer Codes

“…The magnet will provide a field inside of the RF and coupling coil module (RFCC) module such that the beam stays within the beryllium windows that are attached to each of the four RF cavities in the RFCC module. The four RF cavities replace the muon beam longitudinal momentum that was removed by ionization cooling by the absorbers in the middle of absorber focus coil (AFC) modules [3]. The RFCC module is located between two AFC modules, which have centers that are separated by a distance of 2.75 m along the axis of MICE [4].…”