Search arXiv⌕ Search
Home/Archive/arXiv

arXiv · 2410.24099

Characterization of the optical model of the T2K 3D segmented plastic scintillator detector

S. Abe·I. Alekseev·T. Arai·T. Arihara·S. Arimoto·N. Babu·V. Baranov·L. Bartoszek·L. Berns·S. Bhattacharjee·A. Blondel·A. V. Boikov·M. Buizza-Avanzini·J. Capó·J. Cayo·J. Chakrani·P. S. Chong·A. Chvirova·M. Danilov·C. Davis·Yu. I. Davydov·A. Dergacheva·N. Dokania·D. Douqa·T. A. Doyle·O. Drapier·A. Eguchi·J. Elias·D. Fedorova·S. Fedotov·D. Ferlewicz·Y. Fuji·Y. Furui·A. Gendotti·A. Germer·L. Giannessi·C. Giganti·V. Glagolev·J. Hu·K. Iwamoto·M. Jakkapu·C. Jesús-Valls·J. Y. Ji·C. K. Jung·H. Kakuno·S. P. Kasetti·M. Kawaue·M. Khabibullin·A. Khotjantsev·T. Kikawa·H. Kikutani·H. Kobayashi·T. Kobayashi·S. Kodama·M. Kolupanova·A. Korzenev·U. Kose·Y. Kudenko·S. Kuribayashi·T. Kutter·M. Lachat·K. Lachner·D. Last·N. Latham·D. Leon Silverio·B. Li·W. Li·Z. Li·C. Lin·L. S. Lin·S. Lin·T. Lux·K. Mahtani·L. Maret·D. A. Martinez Caicedo·S. Martynenko·T. Matsubara·C. Mauger·C. McGrew·J. McKean·A. Mefodiev·E. Miller·O. Mineev·A. L. Moreno·A. Muñoz·T. Nakadaira·K. Nakagiri·V. Nguyen·L. Nicola·E. Noah·T. Nosek·W. Okinaga·L. Osu·V. Paolone·S. Parsa·R. Pellegrino·M. A. Ramirez·M. Reh·C. Ricco·A. Rubbia
View original source ↗Read source document ↗Export metadata ↓

Abstract

The magnetised near detector (ND280) of the T2K long-baseline neutrino oscillation experiment has been recently upgraded aiming to satisfy the requirement of reducing the systematic uncertainty from measuring the neutrinonucleus interaction cross section, which is the largest systematic uncertainty in the search for leptonic charge-parity symmetry violation. A key component of the upgrade is SuperFGD, a 3D segmented plastic scintillator detector made of approximately 2,000,000 optically-isolated 1 cm3 cubes. It will provide a 3D image of GeV neutrino interactions by combining tracking and stopping power measurements of final state particles with sub-nanosecond time resolution. The performance of SuperFGD is characterized by the precision of its response to charged particles as well as the systematic effects that might affect the physics measurements. Hence, a detailed Geant4 based optical simulation of the SuperFGD building block, i.e. a plastic scintillating cube read out by three wavelength shifting fibers, has been developed and validated with the different datasets collected in various beam tests. In this manuscript the description of the optical model as well as the comparison with data are reported.

Explore related subjects

hep-exphysics.ins-det

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

S. Abe, I. Alekseev, T. Arai, T. Arihara, S. Arimoto, N. Babu, V. Baranov, L. Bartoszek, L. Berns, S. Bhattacharjee, A. Blondel, A. V. Boikov, M. Buizza-Avanzini, J. Capó, J. Cayo, J. Chakrani, P. S. Chong, A. Chvirova, M. Danilov, C. Davis, Yu. I. Davydov, A. Dergacheva, N. Dokania, D. Douqa, T. A. Doyle, O. Drapier, A. Eguchi, J. Elias, D. Fedorova, S. Fedotov, D. Ferlewicz, Y. Fuji, Y. Furui, A. Gendotti, A. Germer, L. Giannessi, C. Giganti, V. Glagolev, J. Hu, K. Iwamoto, M. Jakkapu, C. Jesús-Valls, J. Y. Ji, C. K. Jung, H. Kakuno, S. P. Kasetti, M. Kawaue, M. Khabibullin, A. Khotjantsev, T. Kikawa, H. Kikutani, H. Kobayashi, T. Kobayashi, S. Kodama, M. Kolupanova, A. Korzenev, U. Kose, Y. Kudenko, S. Kuribayashi, T. Kutter, M. Lachat, K. Lachner, D. Last, N. Latham, D. Leon Silverio, B. Li, W. Li, Z. Li, C. Lin, L. S. Lin, S. Lin, T. Lux, K. Mahtani, L. Maret, D. A. Martinez Caicedo, S. Martynenko, T. Matsubara, C. Mauger, C. McGrew, J. McKean, A. Mefodiev, E. Miller, O. Mineev, A. L. Moreno, A. Muñoz, T. Nakadaira, K. Nakagiri, V. Nguyen, L. Nicola, E. Noah, T. Nosek, W. Okinaga, L. Osu, V. Paolone, S. Parsa, R. Pellegrino, M. A. Ramirez, M. Reh, C. Ricco, A. Rubbia. 2024-10-31. Characterization of the optical model of the T2K 3D segmented plastic scintillator detector. https://arxiv.org/abs/2410.24099

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

arXiv2026

Charge-dependent atmospheric muon flux at 17 GV geomagnetic cutoff with the mini-ICAL detector

The Iron CALorimeter (ICAL) detector at the India-Based Neutrino Observatory (INO) was conceived as an underground experiment designed to measure atmospheric neutrino oscillation parameters. As part of the R\&D programme, a scaled prototype (mini-ICAL), 85\,ton, approximately 1/600$^{\mathrm{th}}$ the mass of the full detector, was constructed at the IICHEP Transit Campus, Madurai (altitude 150\,m; latitude 9.9372$^\circ$\,N; longitude 78.013$^\circ$\,E; geomagnetic latitude 1.44$^\circ$\,N; vertical cutoff rigidity 17\,GV) and operated between 2018 and 2022. The prototype enabled measurements of charge-dependent cosmic muon spectra in the vicinity of the geomagnetic equator and provided an important validation of detector performance, reconstruction algorithms, and simulation frameworks for the ICAL experiment. Differential fluxes of $μ^{-}$ and $μ^{+}$ were measured over the momentum range $\sim$\,1--5\,GeV/c. The obtained momentum spectra are systematically lower than those reported at sites with smaller geomagnetic cutoff rigidities, consistent with the suppression of low- and intermediate-rigidity primary cosmic rays at the 17\,GV cutoff. The measurements are compared with predictions from different hadronic interaction models available in CORSIKA simulations.

hep-ex↗
arXiv2026

Laboratory constraints on peV-scale mass splitting between ordinary and sterile neutron states

Sterile states of matter, represented by a parallel ``mirror'' sector, may contribute to the observed dark matter in the Universe. We investigated the parameter space of neutron $(n)$ to mirror-neutron $(n')$ oscillations, in the case where the two states are not necessarily mass-degenerate, taking into account interactions in the mirror sector. By tuning the magnitude of an applied magnetic-field in the range $5~μ\mathrm{T} < B < 360~μ\mathrm{T}$ to corresponding resonance conditions for finite mass splitting, we derive exclusion limits for the $n-n'$ oscillation time constant reaching about $20~\text{s}$ over the mass-difference range $0.3 - 22~\text{peV}$. In parts of this parameter range, our limits exceed the model-dependent neutron-star-cooling bound, providing the first experimental constraints in this scenario that are more stringent than this astrophysical estimate.

hep-ex↗
arXiv2026

Search for the $^{16}\text{O}(ppp) \rightarrow ^{13}\text{C} π^+ π^+ e^+$ Decay Mode in Super-Kamiokande Using Machine Learning Techniques

We report a new partial lifetime limit of $4.2 \times 10^{32}$ years for the trinucleon decay mode $^{16}\text{O}(ppp) \rightarrow ^{13}\text{C} π^+ π^+ e^+$, obtained from a search conducted using the Super-Kamiokande detector with 0.401 megaton-years of exposure across five operational periods (SK-I: 1996--2001, SK-II: 2002--2005, SK-III: 2006--2008, SK-IV: 2008--2018, SK-V: 2019--2020). This represents an improvement of six orders of magnitude over previous experimental constraints. The analysis utilizes a convolutional neural network (CNN) incorporating an attention mechanism---a computational technique that enables the model to focus on the most relevant regions of Cherenkov ring patterns---to enhance event classification, thereby improving the sensitivity of the search. This is the first application of a CNN to a nucleon decay search in Super-Kamiokande. Furthermore, the large dataset available in Super-Kamiokande (hereafter "SK") strengthens the statistical power of the study, enabling a more stringent constraint than those set by prior experiments.

hep-ex↗