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Main Authors: Abe, S., Alarakia-Charles, H., Alekseev, I., Arai, T., Arihara, T., Arimoto, S., Artikov, A. M., Awataguchi, Y., Babu, N., Baranov, V., Barr, G., Barrow, D., Bartoszek, L., Beliakova, A., Bernardi, L., Berns, L., Bhattacharjee, S., Boikov, A. V., Blondel, A., Bonnemaison, A., Cadoux, F., Cap, S., Cauchois, A., Chakrani, J., Chong, P. S., Chvirova, A., Danilov, M., Davis, C., Davouloury, V., Davydov, Yu. I., Dergacheva, A., Domangue, C., Douqa, D., Doyle, T. A., Drapier, O., Eguchi, A., Elias, J., Erofeev, G., Favre, Y., Fedorova, D., Fedotov, S., Ferlewicz, D., Fujii, Y., Fujita, R., Furui, Y., Gastaldi, F., Gendotti, A., Germer, A., Giannessi, L., Giganti, C., Glagolev, V., Guillaumat, R., Heitkamp, I., Hu, J., Husi, C., Ichikawa, A. K., Ishida, T. H., Izmaylov, A., Iwamoto, K., Jakkapu, M., Jesús-Valls, C., Ji, J. Y., Juneau, J., Jung, C. K., Kakuno, H., Kawaue, M., Keener, P. T., Khabibullin, M., Khomutov, N. V., Khotjantsev, A., Kikawa, T., Kikutani, H., Kirichkov, N. V., Kobayashi, H., Kobayashi, T., Koch, L., Kodama, S., Kolesnikov, A. O., Kolupanova, M., Koto, T., Kudenko, Y., Kuribayashi, S., Kutter, T., Lachat, M., Lachner, K., James, M. Lamers, Last, D., Latham, N., Silverio, D. Leon, Li, B., Li, W., Lin, C., Louzir, M., Lux, T., Mahtani, K. K., Manly, S., Caicedo, D. A. Martinez, Mashin, N., Matsubara, T., Mauger, C., McFarland, K. S., McGrew, C., McKean, J., Mefodiev, A., Miller, E., Mineev, O., Minamino, A., Moreno, A. L., Muñoz, A., Nakadaira, T., Nakagiri, K., Nakaya, T., Nanni, J., Nicolas, L., Nguyen, V., Messomo, E. Noah, Nosek, T., O'Keeffe, H. M., Ogawa, T., Okinaga, W., Osu, L., Paolone, V., Pelleriti, G., Pickering, L., Ramírez, M. A., Reh, M., Reina, G., Riccio, C., Rubbia, A., Saadi, F., Sakashita, K., Sallin, N., Sanchez, F., Schefke, T., Schloesser, C., Sgalaberna, D., Shaikovskiy, A., Shvarev, N., Shvartsman, A., Shiraishi, Y., Skrobova, N., Speers, A., Smy, M., Svirida, D., Tairafune, S., Tani, M., Tanigawa, H., Teklu, A., Tereshchenko, S., Tereshchenko, V. V., Tsushima, T., Tzanov, M., Van Berg, R., Vasilyev, I. I., Vladisavljevic, T., Wakabayashi, D., Wallace, H., Weber, A., Whitney, N., Wret, C., Xu, Y., Yang, Y., Yershov, N., Yrey, A. J. P., Yokoyama, M., Yoshimoto, Y., Zhao, X. Y., Zheng, H., Zhong, H., Zhu, T., Zimmerman, E. D., Zito, M.
Format: Preprint
Published: 2026
Subjects:
Instrumentation and Detectors
High Energy Physics - Experiment
Online Access:https://arxiv.org/abs/2603.14921
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author Abe, S.
Alarakia-Charles, H.
Alekseev, I.
Arai, T.
Arihara, T.
Arimoto, S.
Artikov, A. M.
Awataguchi, Y.
Babu, N.
Baranov, V.
Barr, G.
Barrow, D.
Bartoszek, L.
Beliakova, A.
Bernardi, L.
Berns, L.
Bhattacharjee, S.
Boikov, A. V.
Blondel, A.
Bonnemaison, A.
Cadoux, F.
Cap, S.
Cauchois, A.
Chakrani, J.
Chong, P. S.
Chvirova, A.
Danilov, M.
Davis, C.
Davouloury, V.
Davydov, Yu. I.
Dergacheva, A.
Domangue, C.
Douqa, D.
Doyle, T. A.
Drapier, O.
Eguchi, A.
Elias, J.
Erofeev, G.
Favre, Y.
Fedorova, D.
Fedotov, S.
Ferlewicz, D.
Fujii, Y.
Fujita, R.
Furui, Y.
Gastaldi, F.
Gendotti, A.
Germer, A.
Giannessi, L.
Giganti, C.
Glagolev, V.
Guillaumat, R.
Heitkamp, I.
Hu, J.
Husi, C.
Ichikawa, A. K.
Ishida, T. H.
Izmaylov, A.
Iwamoto, K.
Jakkapu, M.
Jesús-Valls, C.
Ji, J. Y.
Juneau, J.
Jung, C. K.
Kakuno, H.
Kawaue, M.
Keener, P. T.
Khabibullin, M.
Khomutov, N. V.
Khotjantsev, A.
Kikawa, T.
Kikutani, H.
Kirichkov, N. V.
Kobayashi, H.
Kobayashi, T.
Koch, L.
Kodama, S.
Kolesnikov, A. O.
Kolupanova, M.
Koto, T.
Kudenko, Y.
Kuribayashi, S.
Kutter, T.
Lachat, M.
Lachner, K.
James, M. Lamers
Last, D.
Latham, N.
Silverio, D. Leon
Li, B.
Li, W.
Lin, C.
Louzir, M.
Lux, T.
Mahtani, K. K.
Manly, S.
Caicedo, D. A. Martinez
Mashin, N.
Matsubara, T.
Mauger, C.
McFarland, K. S.
McGrew, C.
McKean, J.
Mefodiev, A.
Miller, E.
Mineev, O.
Minamino, A.
Moreno, A. L.
Muñoz, A.
Nakadaira, T.
Nakagiri, K.
Nakaya, T.
Nanni, J.
Nicolas, L.
Nguyen, V.
Messomo, E. Noah
Nosek, T.
O'Keeffe, H. M.
Ogawa, T.
Okinaga, W.
Osu, L.
Paolone, V.
Pelleriti, G.
Pickering, L.
Ramírez, M. A.
Reh, M.
Reina, G.
Riccio, C.
Rubbia, A.
Saadi, F.
Sakashita, K.
Sallin, N.
Sanchez, F.
Schefke, T.
Schloesser, C.
Sgalaberna, D.
Shaikovskiy, A.
Shvarev, N.
Shvartsman, A.
Shiraishi, Y.
Skrobova, N.
Speers, A.
Smy, M.
Svirida, D.
Tairafune, S.
Tani, M.
Tanigawa, H.
Teklu, A.
Tereshchenko, S.
Tereshchenko, V. V.
Tsushima, T.
Tzanov, M.
Van Berg, R.
Vasilyev, I. I.
Vladisavljevic, T.
Wakabayashi, D.
Wallace, H.
Weber, A.
Whitney, N.
Wret, C.
Xu, Y.
Yang, Y.
Yershov, N.
Yrey, A. J. P.
Yokoyama, M.
Yoshimoto, Y.
Zhao, X. Y.
Zheng, H.
Zhong, H.
Zhu, T.
Zimmerman, E. D.
Zito, M.
author_facet Abe, S.
Alarakia-Charles, H.
Alekseev, I.
Arai, T.
Arihara, T.
Arimoto, S.
Artikov, A. M.
Awataguchi, Y.
Babu, N.
Baranov, V.
Barr, G.
Barrow, D.
Bartoszek, L.
Beliakova, A.
Bernardi, L.
Berns, L.
Bhattacharjee, S.
Boikov, A. V.
Blondel, A.
Bonnemaison, A.
Cadoux, F.
Cap, S.
Cauchois, A.
Chakrani, J.
Chong, P. S.
Chvirova, A.
Danilov, M.
Davis, C.
Davouloury, V.
Davydov, Yu. I.
Dergacheva, A.
Domangue, C.
Douqa, D.
Doyle, T. A.
Drapier, O.
Eguchi, A.
Elias, J.
Erofeev, G.
Favre, Y.
Fedorova, D.
Fedotov, S.
Ferlewicz, D.
Fujii, Y.
Fujita, R.
Furui, Y.
Gastaldi, F.
Gendotti, A.
Germer, A.
Giannessi, L.
Giganti, C.
Glagolev, V.
Guillaumat, R.
Heitkamp, I.
Hu, J.
Husi, C.
Ichikawa, A. K.
Ishida, T. H.
Izmaylov, A.
Iwamoto, K.
Jakkapu, M.
Jesús-Valls, C.
Ji, J. Y.
Juneau, J.
Jung, C. K.
Kakuno, H.
Kawaue, M.
Keener, P. T.
Khabibullin, M.
Khomutov, N. V.
Khotjantsev, A.
Kikawa, T.
Kikutani, H.
Kirichkov, N. V.
Kobayashi, H.
Kobayashi, T.
Koch, L.
Kodama, S.
Kolesnikov, A. O.
Kolupanova, M.
Koto, T.
Kudenko, Y.
Kuribayashi, S.
Kutter, T.
Lachat, M.
Lachner, K.
James, M. Lamers
Last, D.
Latham, N.
Silverio, D. Leon
Li, B.
Li, W.
Lin, C.
Louzir, M.
Lux, T.
Mahtani, K. K.
Manly, S.
Caicedo, D. A. Martinez
Mashin, N.
Matsubara, T.
Mauger, C.
McFarland, K. S.
McGrew, C.
McKean, J.
Mefodiev, A.
Miller, E.
Mineev, O.
Minamino, A.
Moreno, A. L.
Muñoz, A.
Nakadaira, T.
Nakagiri, K.
Nakaya, T.
Nanni, J.
Nicolas, L.
Nguyen, V.
Messomo, E. Noah
Nosek, T.
O'Keeffe, H. M.
Ogawa, T.
Okinaga, W.
Osu, L.
Paolone, V.
Pelleriti, G.
Pickering, L.
Ramírez, M. A.
Reh, M.
Reina, G.
Riccio, C.
Rubbia, A.
Saadi, F.
Sakashita, K.
Sallin, N.
Sanchez, F.
Schefke, T.
Schloesser, C.
Sgalaberna, D.
Shaikovskiy, A.
Shvarev, N.
Shvartsman, A.
Shiraishi, Y.
Skrobova, N.
Speers, A.
Smy, M.
Svirida, D.
Tairafune, S.
Tani, M.
Tanigawa, H.
Teklu, A.
Tereshchenko, S.
Tereshchenko, V. V.
Tsushima, T.
Tzanov, M.
Van Berg, R.
Vasilyev, I. I.
Vladisavljevic, T.
Wakabayashi, D.
Wallace, H.
Weber, A.
Whitney, N.
Wret, C.
Xu, Y.
Yang, Y.
Yershov, N.
Yrey, A. J. P.
Yokoyama, M.
Yoshimoto, Y.
Zhao, X. Y.
Zheng, H.
Zhong, H.
Zhu, T.
Zimmerman, E. D.
Zito, M.
contents The magnetised near detector ND280 of the long-baseline neutrino experiment T2K has been upgraded to improve its detection performance and, consequently, enhance our understanding of neutrino-nucleus interactions, reducing the systematic uncertainties in measurements of the neutrino oscillation parameters. A key component of the upgrade is a novel segmented plastic scintillator detector, called the Super Fine-Grained Detector (SuperFGD), made of approximately 2 million optically isolated 1 cm$^3$ cubes read out by three orthogonal wavelength-shifting (WLS) fibres. Scintillation photons are detected by 55,888 Hamamatsu Multi-Pixel Photon Counters (MPPCs). The SuperFGD provides 3D images of neutrino interactions by tracking the final-state charged particles produced isotropically, including protons down to a threshold of around 330 MeV/$c$. The high light yield of SuperFGD greatly improves particle identification and the sub-nanosecond time resolution provides an excellent identification of Michel electrons. The SuperFGD is also able to detect neutrons from neutrino interactions and, for the first time in a neutrino experiment, to reconstruct their kinetic energy using a fine detector segmentation and by measuring the time-of-flight with sub-nanosecond precision. In this article the details of the detector design, construction and performance are described. The detector was installed in ND280 and successfully commissioned with cosmic data in 2023 and, later, with the T2K neutrino beam. The detector response has been characterised with the 2023 and 2024 data and the results are reported in this article.
format Preprint
id arxiv_https___arxiv_org_abs_2603_14921
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle The Super Fine-Grained Detector for the T2K neutrino oscillation experiment
Abe, S.
Alarakia-Charles, H.
Alekseev, I.
Arai, T.
Arihara, T.
Arimoto, S.
Artikov, A. M.
Awataguchi, Y.
Babu, N.
Baranov, V.
Barr, G.
Barrow, D.
Bartoszek, L.
Beliakova, A.
Bernardi, L.
Berns, L.
Bhattacharjee, S.
Boikov, A. V.
Blondel, A.
Bonnemaison, A.
Cadoux, F.
Cap, S.
Cauchois, A.
Chakrani, J.
Chong, P. S.
Chvirova, A.
Danilov, M.
Davis, C.
Davouloury, V.
Davydov, Yu. I.
Dergacheva, A.
Domangue, C.
Douqa, D.
Doyle, T. A.
Drapier, O.
Eguchi, A.
Elias, J.
Erofeev, G.
Favre, Y.
Fedorova, D.
Fedotov, S.
Ferlewicz, D.
Fujii, Y.
Fujita, R.
Furui, Y.
Gastaldi, F.
Gendotti, A.
Germer, A.
Giannessi, L.
Giganti, C.
Glagolev, V.
Guillaumat, R.
Heitkamp, I.
Hu, J.
Husi, C.
Ichikawa, A. K.
Ishida, T. H.
Izmaylov, A.
Iwamoto, K.
Jakkapu, M.
Jesús-Valls, C.
Ji, J. Y.
Juneau, J.
Jung, C. K.
Kakuno, H.
Kawaue, M.
Keener, P. T.
Khabibullin, M.
Khomutov, N. V.
Khotjantsev, A.
Kikawa, T.
Kikutani, H.
Kirichkov, N. V.
Kobayashi, H.
Kobayashi, T.
Koch, L.
Kodama, S.
Kolesnikov, A. O.
Kolupanova, M.
Koto, T.
Kudenko, Y.
Kuribayashi, S.
Kutter, T.
Lachat, M.
Lachner, K.
James, M. Lamers
Last, D.
Latham, N.
Silverio, D. Leon
Li, B.
Li, W.
Lin, C.
Louzir, M.
Lux, T.
Mahtani, K. K.
Manly, S.
Caicedo, D. A. Martinez
Mashin, N.
Matsubara, T.
Mauger, C.
McFarland, K. S.
McGrew, C.
McKean, J.
Mefodiev, A.
Miller, E.
Mineev, O.
Minamino, A.
Moreno, A. L.
Muñoz, A.
Nakadaira, T.
Nakagiri, K.
Nakaya, T.
Nanni, J.
Nicolas, L.
Nguyen, V.
Messomo, E. Noah
Nosek, T.
O'Keeffe, H. M.
Ogawa, T.
Okinaga, W.
Osu, L.
Paolone, V.
Pelleriti, G.
Pickering, L.
Ramírez, M. A.
Reh, M.
Reina, G.
Riccio, C.
Rubbia, A.
Saadi, F.
Sakashita, K.
Sallin, N.
Sanchez, F.
Schefke, T.
Schloesser, C.
Sgalaberna, D.
Shaikovskiy, A.
Shvarev, N.
Shvartsman, A.
Shiraishi, Y.
Skrobova, N.
Speers, A.
Smy, M.
Svirida, D.
Tairafune, S.
Tani, M.
Tanigawa, H.
Teklu, A.
Tereshchenko, S.
Tereshchenko, V. V.
Tsushima, T.
Tzanov, M.
Van Berg, R.
Vasilyev, I. I.
Vladisavljevic, T.
Wakabayashi, D.
Wallace, H.
Weber, A.
Whitney, N.
Wret, C.
Xu, Y.
Yang, Y.
Yershov, N.
Yrey, A. J. P.
Yokoyama, M.
Yoshimoto, Y.
Zhao, X. Y.
Zheng, H.
Zhong, H.
Zhu, T.
Zimmerman, E. D.
Zito, M.
Instrumentation and Detectors
High Energy Physics - Experiment
The magnetised near detector ND280 of the long-baseline neutrino experiment T2K has been upgraded to improve its detection performance and, consequently, enhance our understanding of neutrino-nucleus interactions, reducing the systematic uncertainties in measurements of the neutrino oscillation parameters. A key component of the upgrade is a novel segmented plastic scintillator detector, called the Super Fine-Grained Detector (SuperFGD), made of approximately 2 million optically isolated 1 cm$^3$ cubes read out by three orthogonal wavelength-shifting (WLS) fibres. Scintillation photons are detected by 55,888 Hamamatsu Multi-Pixel Photon Counters (MPPCs). The SuperFGD provides 3D images of neutrino interactions by tracking the final-state charged particles produced isotropically, including protons down to a threshold of around 330 MeV/$c$. The high light yield of SuperFGD greatly improves particle identification and the sub-nanosecond time resolution provides an excellent identification of Michel electrons. The SuperFGD is also able to detect neutrons from neutrino interactions and, for the first time in a neutrino experiment, to reconstruct their kinetic energy using a fine detector segmentation and by measuring the time-of-flight with sub-nanosecond precision. In this article the details of the detector design, construction and performance are described. The detector was installed in ND280 and successfully commissioned with cosmic data in 2023 and, later, with the T2K neutrino beam. The detector response has been characterised with the 2023 and 2024 data and the results are reported in this article.
title The Super Fine-Grained Detector for the T2K neutrino oscillation experiment
topic Instrumentation and Detectors
High Energy Physics - Experiment
url https://arxiv.org/abs/2603.14921

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