Muon Beam Emittance Evolution in the Helical Ionization Cooling Channel for Bright Muon Sources

Characteristic of a helical latticeforsix dimensional muon ionization cooling will be presented to utilize for a bright muon source. The beta function and the dispersion in the lattice are tunable by adjusting the helical magnetic component. Asaresult, thecoolingdecrementsandtheequilibriumbeam emittance in transverse and longitudinal phase spaces are flexible. A helical magnetic component can be adjusted by changing the geometry of helical solenoid magnets. Manipulating a cooling path is an important capability in a bright muon source to serve a high quality muon beam for various muon beam applications.