학술논문
Neutron detection and application with a novel 3D-projection scintillator tracker in the future long-baseline neutrino oscillation experiments
Document Type
Working Paper
Author
Gwon, S.; Granger, P.; Yang, G.; Bolognesi, S.; Cai, T.; Danilov, M.; Delbart, A.; De Roeck, A.; Dolan, S.; Eurin, G.; Razakamiandra, R. F.; Fedotov, S.; Aguirre, G. Fiorentini; Flight, R.; Gran, R.; Ha, C.; Jung, C. K.; Jung, K. Y.; Kettell, S.; Khabibullin, M.; Khotjantsev, A.; Kordosky, M.; Kudenko, Y.; Kutter, T.; Maneira, J.; Manly, S.; Caicedo, D. A. Martinez; Mauger, C.; McFarland, K.; McGrew, C.; Mefodev, A.; Mineev, O.; Naples, D.; Olivier, A.; Paolone, V.; Prasad, S.; Riccio, C.; Rondon, J. Rodriguez; Sgalaberna, D.; Sitraka, A.; Siyeon, K.; Skrobova, N.; Su, H.; Suvorov, S.; Teklu, A.; Tzanov, M.; Valencia, E.; Wood, K.; Worcester, E.; Yershov, N.
Source
Phys. Rev. D 107, 032012, 2023
Subject
Language
Abstract
Neutrino oscillation experiments require a precise measurement of the neutrino energy. However, the kinematic detection of the final-state neutron in the neutrino interaction is missing in current neutrino oscillation experiments. The missing neutron kinematic detection results in a feed-down of the detected neutrino energy compared to the true neutrino energy. A novel 3D\textcolor{black}{-}projection scintillator tracker, which consists of roughly ten million active cubes covered with an optical reflector, is capable of measuring the neutron kinetic energy and direction on an event-by-event basis using the time-of-flight technique thanks to the fast timing, fine granularity, and high light yield. The $\bar{\nu}_{\mu}$ interactions tend to produce neutrons in the final state. By inferring the neutron kinetic energy, the $\bar{\nu}_{\mu}$ energy can be reconstructed better, allowing a tighter incoming neutrino flux constraint. This paper shows the detector's ability to reconstruct neutron kinetic energy and the $\bar{\nu}_{\mu}$ flux constraint achieved by selecting the charged-current interactions without mesons or protons in the final state.