Developing DUNE’s near detector strategy

What is the probability for a muon neutrino to oscillate to an electron neutrino, as a function of energy? To obtain this probability from our far detector data, we must know the flux of neutrinos produced at Fermilab, the cross section for neutrino scattering on argon, and the relationship between what the detector sees and the neutrino energy. A near detector can provide this crucial information…