A 3D segmented Water-based Liquid Scintillator for high-precision detection of neutrinos in water
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arXiv
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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915447556800512 |
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| author | Li, Botao Borodulina, Daria Sgalaberna, Davide Weber, Tim Yeh, Minfang Kose, Umut Franks, Matthew Rubbia, André Wüthrich, Johannes Giganti, Claudio Kikawa, Tatsuya |
| author_facet | Li, Botao Borodulina, Daria Sgalaberna, Davide Weber, Tim Yeh, Minfang Kose, Umut Franks, Matthew Rubbia, André Wüthrich, Johannes Giganti, Claudio Kikawa, Tatsuya |
| contents | Precision detection of neutrino-nucleus interactions in water with the complete detection of the final state, including leptons and hadrons, is challenging due to water being a non-scintillating medium. This can be a limitation for the next-generation long-baseline neutrino oscillation experiments, such as Hyper-Kamiokande, where the neutrino-nucleus interaction models must reach a few percent-level accuracy. Water-based liquid scintillator can be a game changer for the future near detectors. In this article, we propose a novel design consisting of a 3D highly-segmented water-based liquid scintillator. The water-based liquid scintillator is encapsulated within a highly-segmented rigid but very light structure that provides the optical isolation with a 1 cm$^{3}$ granularity, each read out by orthogonal wavelength shifting fibers, and 81\% of water by mass in the active volume. Such configuration is also suitable for pure liquid scintillator. The detector design, prototyped and validated with cosmic ray data, is described and results are reported. The optical model is studied with Monte Carlo simulations and results are compared with the collected data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_11355 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A 3D segmented Water-based Liquid Scintillator for high-precision detection of neutrinos in water Li, Botao Borodulina, Daria Sgalaberna, Davide Weber, Tim Yeh, Minfang Kose, Umut Franks, Matthew Rubbia, André Wüthrich, Johannes Giganti, Claudio Kikawa, Tatsuya Instrumentation and Detectors High Energy Physics - Experiment Precision detection of neutrino-nucleus interactions in water with the complete detection of the final state, including leptons and hadrons, is challenging due to water being a non-scintillating medium. This can be a limitation for the next-generation long-baseline neutrino oscillation experiments, such as Hyper-Kamiokande, where the neutrino-nucleus interaction models must reach a few percent-level accuracy. Water-based liquid scintillator can be a game changer for the future near detectors. In this article, we propose a novel design consisting of a 3D highly-segmented water-based liquid scintillator. The water-based liquid scintillator is encapsulated within a highly-segmented rigid but very light structure that provides the optical isolation with a 1 cm$^{3}$ granularity, each read out by orthogonal wavelength shifting fibers, and 81\% of water by mass in the active volume. Such configuration is also suitable for pure liquid scintillator. The detector design, prototyped and validated with cosmic ray data, is described and results are reported. The optical model is studied with Monte Carlo simulations and results are compared with the collected data. |
| title | A 3D segmented Water-based Liquid Scintillator for high-precision detection of neutrinos in water |
| topic | Instrumentation and Detectors High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2508.11355 |