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Feasible study on quench back with high-resistive sheets between turns

Research Project

Project/Area Number 20560286
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Power engineering/Power conversion/Electric machinery
Research InstitutionNational Institute for Fusion Science

Principal Investigator

IMAGAWA Shinsaku  National Institute for Fusion Science, ヘリカル研究部, 教授 (10232604)

Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords超伝導マグネット / 電気絶縁 / クエンチ保護
Research Abstract

External dump resistors are usually adopted for quench protection of superconducting magnets. The higher voltage at shut-off is a problem in the larger magnets. Therefore, DC magnets, in which turn-to-turn insulation is replaced by conductive sheets, is proposed. Its availability for quench protection by internal-dump, which is called 'quench back', is investigated. The resistivities of the candidates such as Al_2O_3 with TiC, SiC, and epoxy resins with conductive filler are measured at low temperatures. Their values are acceptable, but the contact resistance between them and conductors must be improved for the actual use. The possible application of this method to large-scale magnets was examined with an analysis code for the coil temperatures at the current shut-off.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (11 results)

All 2010 2009 2008

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (6 results)

  • [Journal Article] Prospects Toward an Integrated Heliotron Fusion Reactor2010

    • Author(s)
      S.Imagawa, A.Sagara, H.Yamada, N.Nakajima, A.Komori, O.Motojima, LHD Experiment Group
    • Journal Title

      Fusion Science and Technology Vol.58, No.1

      Pages: 593-598

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Prospects Toward an Integrated Heliotron Fusion Reactor2010

    • Author(s)
      S.Imagawa, A.Sagara, H.Yamada, N.Nakajima, A.Komori, O.Motojima
    • Journal Title

      Fusion Science and Technology

      Volume: 58 Pages: 593-598

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Concept of Magnet Systems for LHD-type Reactor, Nuclear Fusion2009

    • Author(s)
      S.Imagawa, K.Takahata, H.Tamura, N.Yanagi, T.Mito, T.Obana, A.Sagara
    • Journal Title

      Vol.49

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Concept of Magnet Systems for LHD-type Reactor2009

    • Author(s)
      S.Imagawa, et al.
    • Journal Title

      Nuclear Fusion 49

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Conceptual Design of Magnets with CIC Conductors for LHD-type Reactors FFHR2m2008

    • Author(s)
      S.Imagawa, A.Sagara, Y.Kozaki
    • Journal Title

      Plasma and Fusion Research Vol.3

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Presentation] Design study on DC superconducting magnets with conductive sheets between turns.2010

    • Author(s)
      S.Imagawa
    • Organizer
      Applied Superconductivity Conference 2010
    • Place of Presentation
      米国,ワシントンDC, Omni Shoreham Hotel
    • Year and Date
      2010-08-06
    • Related Report
      2010 Annual Research Report
  • [Presentation] Design study on DC superconducting magnets with conductive sheets between turns2010

    • Author(s)
      S.Imagawa
    • Organizer
      Applied Superconductivity Conference 2010(5LPD06)
    • Place of Presentation
      Washington DC, USA
    • Related Report
      2010 Final Research Report
  • [Presentation] A Conceptual Design of Heliotron DEMO Plant2009

    • Author(s)
      S.Imagawa
    • Organizer
      APFA2009(G28-p4)
    • Place of Presentation
      Aomori, Japan
    • Related Report
      2010 Final Research Report
  • [Presentation] A Conceptual Design of Heliotron DEMO Plant2009

    • Author(s)
      S.Imagawa, T.Goto, A.Sagara
    • Organizer
      APFA2009
    • Place of Presentation
      Aomori, Japan
    • Related Report
      2009 Annual Research Report
  • [Presentation] Concept of Magnet Systems for LHD-type Reactor2008

    • Author(s)
      S.Imagawa
    • Organizer
      22nd IAEA Fusion Energy Conference(FT-P3-17)
    • Place of Presentation
      Geneva, Switzerland
    • Related Report
      2010 Final Research Report
  • [Presentation] Concept of Magnet Systems for LHD-type Reactor.2008

    • Author(s)
      今川信作
    • Organizer
      IAEA核融合エネルギー会議
    • Place of Presentation
      スイス, ジュネーブ
    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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