A preliminary study of the pion decay channel in the US neutrino factory design has been completed, assuming a 1 MW beam of 16 GeV protons incident on the graphite target described in the first neutrino factory feasibility study. Preliminary data suggests that improvements in adiabaticity and increased field strength in the decay channel can increase muon yields as much as 20%, and possible more. The data also suggests that the muon beam can possibly be captured into a smaller emittance if a higher field strength is used in the decay channel solenoids.
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