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Development of a portable Cherenkov neutron detector for nuclear material detection

Research Project

Project/Area Number 20K15213
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 31010:Nuclear engineering-related
Research InstitutionNational Research Institute of Police Science

Principal Investigator

Tanabe Kosuke  科学警察研究所, 法科学第二部, 研究員 (60822070)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords核セキュリティ / チェレンコフ検出器 / 核物質 / 中性子 / 放射線計測
Outline of Research at the Start

核セキュリティ及び放射性廃棄物の計量管理の分野において、核物質の非破壊測定(NDA)技術の需要が世界的に高まっている。アクティブ中性子法は、隠蔽された核物質の検知に最適なNDA手法の1つであるが、コスト面と可搬性に大きな課題がある。本研究では、アクティブ中性子法に適したチェレンコフ中性子検出器を新規に開発することで、非常に低コストかつ可搬性のある核物質NDAシステムの実現を目指す。

Outline of Final Research Achievements

The purpose of this research is the development of a water Cherenkov neutron detector (WCND) as a novel neutron detector for the Cf-252 rotation method to realize an extremely low-cost and transportable non-destructive assay system for nuclear materials. A pulse height discrimination method was adopted to discriminate neutrons from gamma-rays, which is the biggest bottleneck for neutron detection of WCND. As a result, high sensitivity (more than 4 times) and low-cost (less than 1/15) neutron detection was demonstrated compared to the conventional He-3 detector with sufficient suppression of 2.223 MeV gamma-rays. In addition, the on-situ detection of gram quantities of nuclear material was also demonstrated through experiments in combination with a Cf-252 rotation device.

Academic Significance and Societal Importance of the Research Achievements

本研究では、これまで中性子検出器の候補にすらなり得なかった水チェレンコフ中性子検出器(WCND)について、実測定環境下において、欠点であったガンマ線を抑制した上での低コストかつ高感度な中性子検出を実現し、回転照射法への適用により、隠匿された核物質の現場検知という核セキュリティ上の喫緊課題に対する技術的解決策を実証しており、工学及び工業上貢献するところが大きい。本研究で実現した核物質検知装置の導入により、実効性の高い水際対策が可能になるとともに、WCNDは本用途に限らず、可搬性のある低コストかつ高感度な中性子検出器として広範囲への活用が今後期待される。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (15 results)

All 2024 2023 2022 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (12 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Development of a water Cherenkov neutron detector for the active rotation method and demonstration of nuclear material detection2022

    • Author(s)
      Tanabe Kosuke、Komeda Masao、Toh Yosuke、Kitamura Yasunori、Misawa Tsuyoshi、Tsuchiya Ken’ichi、Akiba Norimitsu、Kakuda Hidetoshi、Shibasaki Kazunari、Sagara Hiroshi
    • Journal Title

      Journal of Nuclear Science and Technology

      Volume: - Issue: 7 Pages: 1-13

    • DOI

      10.1080/00223131.2022.2143449

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] A novel method of neptunium-237 detection in its separated form and advanced fuel based on photonuclear reactions2022

    • Author(s)
      Tanabe Kosuke、Sagara Hiroshi
    • Journal Title

      Annals of Nuclear Energy

      Volume: 170 Pages: 108990-108990

    • DOI

      10.1016/j.anucene.2022.108990

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Feasibility study on detection and verification of minor actinides by NDA technique based on photonuclear reactions2023

    • Author(s)
      K. Tanabe, H. Sagara
    • Organizer
      IEEE NSS MIC RTSD 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 可搬型水チェレンコフ中性子検出器の開発2023

    • Author(s)
      田辺鴻典
    • Organizer
      ニュートロン次世代システム技術研究組合 令和5年度第2回研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 放射性物質又は核物質の現場検知技術の開発2023

    • Author(s)
      田辺鴻典
    • Organizer
      艦磁研 秋季講演会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Characterization of water Cherenkov neutron detector with high efficiency, availability and affordability for nuclear security2023

    • Author(s)
      K. Tanabe, M. Komeda, Y. Toh, H. Sagara
    • Organizer
      International Symposium on Zero-Carbon Energy Systems (IZES)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 隠蔽された核物質の現場検知資機材の開発2022

    • Author(s)
      田辺鴻典,米田政夫,藤暢輔,土屋兼一,秋葉教充,角田英俊
    • Organizer
      日本法科学技術学会第28回学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] 可搬型アクティブ中性子法装置による核物質検知に関する研究2022

    • Author(s)
      田辺鴻典,米田政夫,藤暢輔,土屋兼一,秋葉教充,角田英俊,相楽洋
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Study for a new method to detect neptunium-237 based on photonuclear reactions2022

    • Author(s)
      K.Tanabe, H. Sagara
    • Organizer
      The 63th Annual Meeting of Institute of Nuclear Material Management (INMM)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 光核反応を用いたAmの検出手法に関する研究2022

    • Author(s)
      田辺鴻典,相楽洋
    • Organizer
      日本核物質管理学会(INMMJ)第43回年次大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 水チェレンコフ検出器を用いた可搬型アクティブ中性子法装置の開発2021

    • Author(s)
      田辺鴻典, 米田政夫, 藤暢輔, 相楽洋
    • Organizer
      第58回アイソトープ・放射線研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] Verification of the applicability of water Cherenkov detector to active neutron method and development of a prototype detector2021

    • Author(s)
      K. Tanabe, M. Komeda, Y. Toh, Y. Kitamura, T. Misawa, H. Sagara
    • Organizer
      IEEE NSS MIC 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 光核反応を用いたNp-237の検出手法の提案2021

    • Author(s)
      田辺鴻典, 相楽洋
    • Organizer
      日本核物質管理学会(INMMJ)第42回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 可搬型核物質検知装置用の低コスト中性子検出器に関する基礎研究2021

    • Author(s)
      田辺 鴻典, 米田 政夫, 藤 暢輔, 土屋 兼一, 秋葉 教充, 角田 英俊, 柴﨑 一成
    • Organizer
      日本原子力学会2021年春の年会
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] 放射線検出装置2024

    • Inventor(s)
      田辺鴻典, 土屋兼一, 米田政夫, 藤 暢輔
    • Industrial Property Rights Holder
      警察庁科学警察研究所長, 国立研究開発法人日本原子力研究開発機構
    • Industrial Property Rights Type
      特許
    • Filing Date
      2024
    • Related Report
      2023 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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