PoS - Proceedings of Science
Volume 402 - The 22nd International Workshop on Neutrinos from Accelerators (NuFact2021) - All Sessions
Neutron beam test with 3D-projection scintillator tracker prototypes for long-baseline neutrino oscillation
G. Yang
Full text: pdf
Published on: March 31, 2022
The long-baseline neutrino oscillation experiments rely on detailed models of neutrino interactions
on nuclei. These models constitute an important source of systematic uncertainty, driven in part
because detectors to date have been blind to final state neutrons. We are proposing a three-
dimensional projection scintillator tracker as a near detector component in the next generation
long-baseline neutrino experiments such as T2K upgrade and DUNE. Such a detector consists of a
large number of scintillator cubes with three orthogonal optical fibers crossing through each cube.
Due to the good timing resolution and fine granularity, this technology is capable of measuring
neutrons in neutrino interactions on an event-by-event basis and will provide valuable data for
refining neutrino interaction models and ways to reconstruct neutrino energy. Two prototypes have
been exposed to the neutron beamline in Los Alamos National Lab (LANL) in both 2019 and 2020
with neutron energy ranging from 0 to 800 MeV. These beam tests, aimed at characterizing our
detector’s response to neutrons, is a critical step in demonstrating the potential of this technology.
In this paper, the LANL beam test setup will be described and a neutron total cross section
measurement methodology will be shown.
DOI: https://doi.org/10.22323/1.402.0073
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