Abstract
An accurate prediction of the neutrino ux is needed for precision oscillation, and is critical for the cross-section measurements. NOvA, a second-generation long-baseline neutrino oscillation experiment at Fermilab, is designed to measure the (anti) electron neutrino appearance and the (anti) muon neutrino disappearance. NOvA uses two functionally identical detectors separated by 810 kilometers at locations 14 milliradians o-axis from the NuMI muon neutrino beam at Fermilab. At these locations the beam energy peaks at 2 GeV. This baseline is the longest in the world for an accelerator-based neutrino oscillation experiment, which enhances the sensitivity to the neutrino mass ordering. This thesis presents a novel method to empirically constrain the neutrino ux at NOvA Detector using the NuMI accelerator facility at the Fermi National Accelerator Laboratory. The precisely constrained ux will be used to conduct precision measurements of neutrino oscillation and cross-section in the NOvA experiment.
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