Neutron detection and application with a novel 3D-projection scintillator tracker in the future long-baseline neutrino oscillation experiments

S. Gwon, P. Granger, G. Yang, S. Bolognesi, T. Cai, M. Danilov, A. Delbart, A. De Roeck, S. Dolan, G. Eurin, R. F. Razakamiandra, S. Fedotov, G. Fiorentini Aguirre, R. Flight, R. Gran, C. Ha, C. K. Jung, K. Y. Jung, S. Kettell, M. KhabibullinA. Khotjantsev, M. Kordosky, Y. Kudenko, T. Kutter, J. Maneira, S. Manly, D. A. Martinez Caicedo, C. Mauger, K. McFarland, C. McGrew, A. Mefodev, O. Mineev, D. Naples, A. Olivier, V. Paolone, S. Prasad, C. Riccio, J. Rodriguez Rondon, D. Sgalaberna, A. Sitraka, K. Siyeon, N. Skrobova, H. Su, S. Suvorov, A. Teklu, M. Tzanov, E. Valencia, K. Wood, E. Worcester, N. Yershov

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2 Scopus citations


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 smaller detected neutrino energy than the true neutrino energy. A novel 3D-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 ν¯μ interactions tend to produce neutrons in the final state. By measuring the neutron kinetic energy, the ν¯μ energy can be reconstructed better, allowing a tighter incoming neutrino flux constraint. This article shows the detector's ability to reconstruct neutron kinetic energy and the ν¯μ flux constraint achieved by selecting the charged-current interactions without mesons or protons in the final state.

Original languageEnglish (US)
Article number032012
JournalPhysical Review D
Issue number3
StatePublished - Feb 1 2023
Externally publishedYes

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© 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the ""Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.


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