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Reducing Flux Uncertainties of NuMI Beamline
2023
Abstract
Uncertainties in Flux Simulation and PPFX NOvA is a long-baseline neutrino oscillation experiment at Fermilab. There are two detectors, both located 14.6 mrad off-axis from the NuMI (Neutrinos at the Main Injector) beamline, and separated by 810 km. For neutrino cross section measurements precise flux prediction is a critical input (existing uncertainty ~10-15%), therefore accurate modelling of flux is required. We report about the GEANT4-based simulation using two different models, FTFP_BERT and QGSP_BERT. We use a tool G4HP [1] to extract cross sections from thin target simulation.We plan to show the data/MC comparison study of G4HP simulation with the NA61 hadron production data.
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