{
  "abstract": "The T2K ND280 Upgrade aims to reduce systematic uncertainties in measurements of neutrino oscillation parameters and improve sensitivity to the charge-parity (CP)-violating phase, $δ_{\\mathrm{CP}}$. A key component is the Time-of-Flight (ToF) detector, comprising six panels with 118 EJ-200 plastic-scintillator bars surrounding the Super Fine-Grained Detector (SuperFGD) and two High-Angle Time Projection Chambers (HA-TPCs). Each bar is read out at both ends by silicon photomultiplier arrays and digitised using SAMPIC waveform electronics. The ToF provides precise timing and particle-direction information for particle identification and rejection of backgrounds entering the tracker from outside. This article presents the detector design, construction, signal reconstruction, integration, commissioning, and performance. Dedicated single-bar measurements achieve a time resolution of approximately 130 ps and a longitudinal position resolution of 2.6 cm. After installation in ND280, cosmic-ray calibration yields an in situ single-bar time resolution of $169 \\pm 1$ ps for Top-Bottom crossing events. Beam data clearly resolve the eight-bunch T2K spill structure, confirming synchronisation with the ND280 trigger and data-acquisition systems. The ToF has been successfully commissioned and operates stably within the upgraded ND280 detector.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.20117",
  "author_total": 26,
  "authors": [
    {
      "name": "C Alt"
    },
    {
      "name": "L Amziane"
    },
    {
      "name": "N Baudis"
    },
    {
      "name": "A Blanchet"
    },
    {
      "name": "S Bordoni"
    },
    {
      "name": "T.H Bui"
    },
    {
      "name": "F Cadoux"
    },
    {
      "name": "P Collard"
    },
    {
      "name": "M El Baz"
    },
    {
      "name": "Y Favre"
    },
    {
      "name": "L Giannessi"
    },
    {
      "name": "G Ha"
    },
    {
      "name": "C Jesús-Valls"
    },
    {
      "name": "V.S Kasturi"
    },
    {
      "name": "A Klustová"
    },
    {
      "name": "A Korzenev"
    },
    {
      "name": "T.A Le"
    },
    {
      "name": "T Lux"
    },
    {
      "name": "A.D Nguyen"
    },
    {
      "name": "D.T Nguyen"
    },
    {
      "name": "H Nguyen"
    },
    {
      "name": "S Samani"
    },
    {
      "name": "F Sánchez"
    },
    {
      "name": "M Ta"
    },
    {
      "name": "T Thaiduc"
    },
    {
      "name": "E Villa"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bfvq1kv66pw5h.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.20117",
  "fulltext_url": null,
  "id": "bfvq1kv66pw5h",
  "issns": [],
  "landing_url": "https://hal.science/hal-05784466v1",
  "language": "en",
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ex"
    ],
    [
      "arxiv",
      "physics.ins-det"
    ],
    [
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      "0.phys"
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    [
      "hal",
      "1.phys.hexp"
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      "hal",
      "1.phys.phys"
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      "hal",
      "2.phys.phys.phys-ins-det"
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    [
      "openalex",
      "3106|Particle Detector Development and Performance"
    ]
  ],
  "openalex": "W7213593805",
  "pdf_url": "https://arxiv.org/pdf/2609.20117",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-17",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bfvq1kv66pw5h.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:50Z",
      "native_id": "hal-05784466",
      "source": "hal",
      "url": "https://hal.science/hal-05784466v1"
    },
    {
      "first_seen": "2026-10-30T12:22:19Z",
      "native_id": "2609.20117",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.20117"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.ins-det",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Commissioning and Performance of the Time-of-Flight Detector for the T2K Neutrino Oscillation Experiment",
  "title_text": "Commissioning and Performance of the Time-of-Flight Detector for the T2K Neutrino Oscillation Experiment",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:19Z",
  "url": "https://research.draconitic.com/paper/bfvq1kv66pw5h",
  "venue": "HAL",
  "versions": []
}