Polarization effects in the front end of the neutrino factory

We summarize the methods used for simulation of polarization effects in the front end of a possible neutrino factory. We first discuss the helicity of muons in the pion decay process. We find that, neglecting acceptance considerations, the average helicity asymptotically approaches a magnitude of 0.185 at large pion momenta. Next, we describe the methods used for tracking the spin through complicated electromagnetic field configurations in the front end of the neutrino factory, including RF phase rotation and ionization cooling channels. Various depolarizing effects in matter are then considered, including multiple Coulomb scattering and elastic scattering from atomic electrons. Finally, we include all these effects in a simulation of a 480 m long, double phase rotation front end scenario.