{
  "abstract": "Capillary liquid scintillator detectors are promising for high-resolution neutron imaging, yet experimental data on their light spread mechanism and spatial performance remain limited. Here, we report a neutron detector based on a hexagonal capillary array filled with EJ-309 liquid scintillator, with an inner diameter of about 50 um and a camera readout of 9 um pixels. Laser experiments show that the FWHM of the full light spot decreases from 260 um to 90 um with a metal light absorber, confirming effective suppression of lateral light spread. Using an AmBe neutron source, an effective field of view with a 5-sigma threshold was established from background frames. For single-capillary events, the pulse height spectrum follows a Landau distribution with a most probable value of 0.133 +/- 0.001 (stat.), and the intrinsic detection efficiency is 10.07% +/- 1.26% (stat.) +/- 1.43% (syst.), corresponding to about 13.55% when normalized to the active liquid scintillator area. The point spread function core yields a radial FWHM of 12.8 um and a centroid positioning precision of approximately 5.5 um (1 sigma), while the intrinsic position resolution is limited by the capillary pitch to 54 um. Linearity is good for 1 to 2 capillaries, with deviation appearing for 2 to 3 capillaries due to additional capture of spread light. These results provide experimental basis and physical understanding for imaging applications of capillary liquid scintillator neutron detectors.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.36769",
  "author_total": 12,
  "authors": [
    {
      "name": "Guang Luo"
    },
    {
      "name": "Jian Yu"
    },
    {
      "name": "Dikai Li"
    },
    {
      "name": "Yanmeng Dai"
    },
    {
      "name": "Meiling Chen"
    },
    {
      "name": "Jiaqiang Zou"
    },
    {
      "name": "Ke Yan"
    },
    {
      "name": "Shaoxuan Cui"
    },
    {
      "name": "Ge Jin"
    },
    {
      "name": "Zhao Xu"
    },
    {
      "name": "Chunhui Zhang"
    },
    {
      "name": "Leifeng Cao"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4tcvn7pjfk3df.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.36769",
  "fulltext_url": null,
  "id": "4tcvn7pjfk3df",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.36769",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "nucl-ex"
    ],
    [
      "arxiv",
      "physics.ins-det"
    ],
    [
      "openalex",
      "3108|Radiation Detection and Scintillator Technologies"
    ]
  ],
  "openalex": "W7214940896",
  "pdf_url": "https://arxiv.org/pdf/2609.36769",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/4tcvn7pjfk3df.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:31Z",
      "native_id": "2609.36769",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.36769"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.ins-det",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-ex",
      "subfield": "nuclear"
    }
  ],
  "title": "Development and Performance Study of a Capillary Liquid Scintillator Neutron Detector",
  "title_text": "Development and Performance Study of a Capillary Liquid Scintillator Neutron Detector",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:31Z",
  "url": "https://research.draconitic.com/paper/4tcvn7pjfk3df",
  "venue": "arXiv",
  "versions": []
}