Two methods to generate slow muon beam Cryogenic moderator method Use a layer of solid rare gas as a moderator. Initial energy is 10-100eV,and its spread is around 10eV. Time structure is determined by initial beam. slow muon muon beam solid rare-gas film Two methods to generate slow muon beam • Cryogenic moderator method – Use a layer of solid rare gas as a moderator. – Initial energy is 10-100eV, and its spread is around 10eV. – Time structure is determined by initial beam