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Characterization of a radiation detector based on opaque water-based liquid scintillator

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arxiv 2406.13054 v2 pith:VNHPWFEM submitted 2024-06-18 physics.ins-det

classification physics.ins-det
keywords detectoreventsliquidopaquereconstructioncharacterizationmev-equivalentradiation
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We present the characterization of a novel radiation detector based on an opaque water-based liquid scintillator. Opaque scintillators, also known as LiquidO, are made to be highly scattering, such that the scintillation light is effectively confined, and read out through wavelength-shifting fibers. The 1-liter, 32-channel prototype demonstrates the capability for both spectroscopy and topological reconstruction of point-like events. The design, construction, and evaluation of the detector are described, including modeling of the scintillation liquid optical properties and the detector's response to gamma rays of several energies. A mean position reconstruction error of 4.4 mm for 1.6 MeV-equivalent events and 7.4 mm for 0.8 MeV-equivalent events is demonstrated using a simple reconstruction approach analogous to center-of-mass.

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Cited by 1 Pith paper

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  1. Heavy Neutral Lepton Decay Searches using Solar Neutrinos

    hep-ph 2025-06 reject novelty 6.0 of 10

    A new differential decay width including neutral and charged current interference is used to show that future detectors could probe HNL mixing angles over two orders of magnitude below current bounds.

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