Estimating Uncertainties in the Reactor Neutrino Directionality Using Liquid Scintillator with Monte Carlo Simulation

摘要

This paper describes in detail the uncertainties due to several factors that may affect the direction vector of a reactor neutrino in a liquid scintillation detector. The reactor neutrino direction vector was reconstructed through a charge weighting method. The paper simulates the response of gadolinium-loaded, liquid scintillator detector to reactor electron anti-neutrinos. The reaction is based on neutrino capture on hydro-genic protons of inverse beta decay process in the scintillator. A Cherenkov radiation detector can reconstruct the directional information of incident neutrinos relatively well, compared to the liquid scintillation detector. Statistics, spatial resolution, neutrino energy, and multi-reactor and multi-detectors are examined by using Monte Carlo simulation based on the cylindrical liquid scintillating detector model. Furthermore, this simulated model is detailed down to the optical processes, and the source of reactor fuel composition. Finally, one of the main goals is to provide the potential of the detector to measure the origin direction of the incident neutrino. Furthermore, our intention is to help understanding of various uncertainties of the neutrino directionality study for the future massive liquid scintillating neutrino detectors.