A new Muon-to-Electron Conversion Experiment at J-PARC

A new experimental search for coherent, neutrinoless, muon-to-electron conversion from a muonic atom has been proposed for the Japanese Proton Accelerator, J-PARC, now under commissioning. The experiment is completing a conceptual design which proposes a single event sensitivity in the branching ratio of lepton number violating to lepton conserving decays of approximately 2.6 x 10$^{-16}$. This talk briefly describes the experiment and its objectives.