 To accomplish its physics goals, NOνA needs to be efficient at detecting electron neutrinos, which are expected to appear in the NuMI beam (originally made only of muon neutrinos) as the result of neutrino oscillation.Previous neutrino experiments, such as MINOS, have reduced backgrounds from cosmic rays by being underground.However, NOνA is on the surface and relies on precise timing information and a well-defined beam energy to reduce spurrious background counts.