  Muon beams of low emittance provide the basis for the intense,
well-characterised neutrino beams necessary to elucidate the physics of flavour
at a neutrino factory and to provide lepton-antilepton collisions at energies
of up to several TeV at a muon collider. The international Muon Ionization
Cooling Experiment (MICE) aims to demonstrate ionization cooling, the technique
by which it is proposed to reduce the phase-space volume occupied by the muon
beam at such facilities. In an ionization-cooling channel, the muon beam passes
through a material in which it loses energy. The energy lost is then replaced
using RF cavities. The combined effect of energy loss and re-acceleration is to
reduce the transverse emittance of the beam (transverse cooling). A major
revision of the scope of the project was carried out over the summer of 2014.
The revised experiment can deliver a demonstration of ionization cooling. The
design of the cooling demonstration experiment will be described together with
its predicted cooling performance.
