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Study on ultra-lightweight superconducting magnets to accelerate the spread of advanced cancer treatment devices

Research Project

Project/Area Number 19K04364
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21010:Power engineering-related
Research InstitutionNational Institute for Fusion Science

Principal Investigator

Obana Tetsuhiro  核融合科学研究所, 研究部, 助教 (60435518)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywords超伝導コイル / 回転ガントリー / 電磁解析 / 構造解析 / 重粒子線がん治療 / ガントリー / 重粒子線ガン治療
Outline of Research at the Start

超伝導技術を活用した重粒子線がん治療用『回転ガントリー』を、国内外の医療施設へ普及させるためには、装置の大幅な軽量化が急務である。そこで、『回転ガントリー』の中核機器である超伝導マグネットの極軽量化を行う。現状の超伝導マグネットには、漏れ磁場遮蔽のために、巨大重量物である鉄ヨークを使用している。その鉄ヨークを一切使用しない“アクティブシールド(能動的磁場遮蔽)型”超伝導マグネットの設計概念を新たに導入することで、マグネット重量の劇的な軽量化を実現する。その際、これまでの研究活動で開発した『回転ガントリー』用超伝導マグネット設計コードや超伝導コイル製作技術等を活用する。

Outline of Final Research Achievements

In order to make superconducting magnets for heavy particle beam rotating gantries extremely lightweight, we conducted design study on a superconducting dipole magnet incorporating active shielding technology. As a result, we succeeded in establishing a design method for a dipole coil with active shielding. We also clarified the effect of the electromagnetic force generated by coil energization and the thermal stress generated when cooling on the superconducting coil shape.Furthermore, we revealed the effect of the coil shape on the stray field.

Academic Significance and Societal Importance of the Research Achievements

本研究成果によって、重粒子線回転ガントリー用超伝導マグネットの極軽量化に関するフィージビリティを示すことに成功した。その結果、重粒子線回転ガントリーの総重量の大幅な削減が期待できる。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2024 2022 2021 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (7 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Investigating the Effect of Coil Length, Alignment Errors and Cooling Down on a Superconducting Magnet With Active Shielding for Rotating Gantry2024

    • Author(s)
      T. Obana
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 34 Issue: 5 Pages: 4401105-4401105

    • DOI

      10.1109/tasc.2023.3345823

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electromagnetic-Structural Analysis of a Superconducting Magnet With Active Shielding for a Rotating Gantry2022

    • Author(s)
      T. Obana
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 32 Issue: 6 Pages: 4400304-4400304

    • DOI

      10.1109/tasc.2022.3155535

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Design of Lightweight Superconducting Magnets for a Rotating Gantry With Active Shielding2020

    • Author(s)
      Tetsuhiro Obana, Toru Ogitsu
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 30 Issue: 4 Pages: 4400305-4400305

    • DOI

      10.1109/tasc.2020.2966431

    • NAID

      120007188029

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 重粒子線回転ガントリーのためのアクティブシールド型超伝導マグネットの電磁構造解析2022

    • Author(s)
      尾花哲浩
    • Organizer
      2022年度春季低温工学・超電導学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Design study of a lightweight superconducting magnet for a rotating gantry in heavy-iron radiotherapy2022

    • Author(s)
      Tetsuhiro Obana
    • Organizer
      28th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2022 (ICEC28-ICMC 2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 重粒子がん治療用回転ガントリーのためのアクティブシールド型超伝導ダイポールマグネットの設計研究2021

    • Author(s)
      尾花哲浩
    • Organizer
      日本加速器学会第18回年会
    • Related Report
      2021 Research-status Report
  • [Presentation] Electromagnetic-structural analysis of a superconducting magnet with active shielding for a rotating gantry2021

    • Author(s)
      T. Obana
    • Organizer
      27th International Conference on Magnet Technology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 重粒子線回転ガントリーのためのアクティブシールド型超伝導マグネットの電磁力解析2020

    • Author(s)
      尾花哲浩
    • Organizer
      2020年度春季低温工学・超電導学会
    • Related Report
      2020 Research-status Report
  • [Presentation] 重粒子線回転ガントリーのためのアクティブシールド型超伝導マグネットの設計研究(2)2019

    • Author(s)
      尾花 哲浩、 荻津透
    • Organizer
      2019年度春季低温工学・超電導学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Lightweight design of superconducting magnets for a rotating gantry with active shielding2019

    • Author(s)
      T Obana, T Ogitsu
    • Organizer
      International Conference on Magnet Technology(MT26)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2025-01-30  

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