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Development of a pulse current induced fusion splicing method for superconducting joints and their characterization techniques

Research Project

Project/Area Number 17K18885
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Electrical and electronic engineering and related fields
Research InstitutionKyushu University

Principal Investigator

Kiss Takanobu  九州大学, システム情報科学研究院, 教授 (00221911)

Co-Investigator(Kenkyū-buntansha) 井上 昌睦  福岡工業大学, 工学部, 教授 (80346824)
東川 甲平  九州大学, システム情報科学研究院, 准教授 (40599651)
鈴木 匠  九州大学, システム情報科学研究院, 助教 (70756238)
Project Period (FY) 2017-06-30 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Keywords超伝導接続 / 高温超電導線材 / 永久電流 / 超伝導マグネット / 磁気顕微鏡 / 電流計測 / 高温超伝導線材 / 局所分布 / 臨界電流 / 融着 / 磁気顕微観察 / X線トモグラフィー
Outline of Final Research Achievements

This study clarifies the possibility of superconducting joint technology applicable to the coil winding using high-temperature superconducting wires, and intends to establish a basic technology for the persistent current operation of the high-temperature superconducting magnet which enables the generation of steady strong magnetic field. This study examines the possibility of pulse current fusing method, and establishes a method for measuring the ultra low resistance characteristic of the joint locally and with high accuracy. Using this technique, we carried out measurements under cryogenic temperature and magnetic field for superconducting joint using PbSnBi solder connection, and showed that the distribution of local superconducting current density Jc and the distribution of critical temperature Tc inside the joint can be evaluated.

Academic Significance and Societal Importance of the Research Achievements

本研究によって、液体ヘリウムを用いない高温超伝導線材を用いた高磁界NMRや医療用MRIシステムの実現において不可欠な技術である永久電流スイッチの実現を加速する事が可能となる。これらの装置の実現は、先進医療や先端バイオセンシング技術として大きな波及効果が期待できる。また、磁気浮上鉄道やエネルギー貯蔵など、超伝導マグネットの産業応用という観点からも、運輸やエネルギーの分野において重要な貢献が期待できる。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (18 results)

All 2019 2018 2017 Other

All Int'l Joint Research (1 results) Presentation (16 results) (of which Int'l Joint Research: 9 results,  Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] 中国科学院電工研(中国)

    • Related Report
      2018 Annual Research Report
  • [Presentation] 磁気顕微法によるホットプレス(Ba, K)Fe2As2銀シース線材の磁束クリープ特性評価2019

    • Author(s)
      呉 澤宇、東川 甲平、井上 昌睦、黄 河、 姚 超、Ma Yanwei、木須 隆暢
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 磁気顕微法によるNbTi-Bi2223超伝導接合の局所臨界電流分布評価2019

    • Author(s)
      呉 澤宇、東川 甲平、松本 凌, 高野 義彦、木須 隆暢
    • Organizer
      2019年度春季低温工学・超電導学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 磁界中磁気顕微法による(Ba, K)Fe2As2銀シース線材の局所臨界電流分布評価と磁気緩和測定2018

    • Author(s)
      呉 澤宇, 東川 甲平, 井上 昌睦, 黄 河, 姚 超, 馬 衍偉, 木須 隆暢
    • Organizer
      2018年度秋季低温工学・超電導学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Magnetic Relaxation and E-I characteristics in a Copper-alloy Reinforced Bi-2223 Tape2018

    • Author(s)
      LYU LIN, KUMAGAI YUKIHISA, HIGASHIKAWA KOHEI, SUZUKI TAKUMI, KISS TAKANOBU
    • Organizer
      The 3rd Asian Applied Physics Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Numerical analysis of electromagnetic phenomena in high-Tc superconducting tape wire under magnetic field and current applied environment2018

    • Author(s)
      Naohiro Numata, Kohei Hisajima, Kohei Higashikawa, Kiss Takanobu
    • Organizer
      The 3rd Asian Applied Physics Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Flux Creep Characteristics in a (Ba, K)Fe2As2 /Ag Superconducting Tape Based on In-field Magnetic Microscopy2018

    • Author(s)
      Zeyu Wu , Kohei Higashikawa , Takanobu Kiss , He Huang , Chao Yao , Yanwei Ma
    • Organizer
      The 3rd Asian Applied Physics Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electric Field vs. Current Density Characteristics in REBCO Coated Conductor over Wide Range of Electric Fields Including Flux Creep and Flux flow Regimes2018

    • Author(s)
      Yuta Onodera, Kazutaka Imamura, Takumi Suzuki, Kohei Higashikawa, Masayoshi Inoue, Akira Ibi, Takato Machi, Teruo Izumi, Takanobu Kiss
    • Organizer
      4th HTS4Fusion Conductor Workshop
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 磁気顕微法を用いたRE-123線材の通電環境下における磁化緩和特性評価2017

    • Author(s)
      久島 宏平、沼田 尚大、東川 甲平、小野寺 優太、鈴木 匠、井上 昌睦、木須 隆暢
    • Organizer
      第78回応用物理学会秋季学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Magnetic Microscopy for Magnetic Relaxation in RE-123 Coated Conductor with DC Transport Current and External Magnetic Field2017

    • Author(s)
      K. Hisajima, N. Numata, K. Higashikawa, T. Suzuki, M. Inoue, T. Kiss
    • Organizer
      The 13th biennial European Conference on Applied Superconductivity (EUCAS2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analysis of Magnetic Moment Relaxation in REBCO Coated Conductors by Use of Hall Probe Magnetometry2017

    • Author(s)
      Takanobu Kiss, Yuta Onodera, Shohei Noda, Kohei Higashikawa, Kazutaka Imamura, Kohei Higashikawa, Takumi Suzuki, Masayoshi Inoue
    • Organizer
      The 9th Asian Conference on Applied Superconductivity and Cryogenics (ACASC2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] UTOC-MOD法によるBZO導入YGdBCO線材の磁界中磁気顕微観察2017

    • Author(s)
      東川 甲平, MOHAN Shyam, 鈴木 匠, 大村 俊介, 今村 和孝, 井上 昌睦, 淡路 智, 中岡 晃一, 和泉 輝郎, 木須 隆暢
    • Organizer
      2017年度秋季低温工学・超電導学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 磁気顕微法を用いた外部磁界ならびに通電電流の同時印加環境下におけるRE-123線材の磁化緩和特性評価と解析2017

    • Author(s)
      久島 宏平, 沼田 尚大, 東川 甲平, 小野寺 優太, 鈴木 匠, 井上 昌睦, 木須 隆暢
    • Organizer
      2017年度秋季低温工学・超電導学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 超伝導材料をはじめとする先進機能性材料の特性評価技術2017

    • Author(s)
      木須 隆暢
    • Organizer
      平成29年度九州パワーアカデミーフォーラム
    • Related Report
      2017 Research-status Report
  • [Presentation] Spatially Resolved Measurement on Local Electromagnetic Field Distribution in a Long Gd1Ba2Cu3O7-δ Coated Conductor during Magnetic Moment Relaxation by use of Hall Probe2017

    • Author(s)
      Takanobu Kiss, Yuta Onodera, Shohei Noda, Kazutaka Imamura, Kohei Higashikawa, Takumi Suzuki, Masayoshi Inoue
    • Organizer
      The 2nd Asian Applied Physics Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Hall Probe Magnetometry for Measuring In-field Current Transport Properties of REBCO Coated Conductors2017

    • Author(s)
      Shyam Mohan, Yuta Onodera, Kazutaka Imamura, Takumi Suzuki, Kohei Higashikawa, Masayoshi Inoue, Takanobu Kiss
    • Organizer
      The 2nd Asian Applied Physics Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Extended Current-Voltage Characteristics in Both Bi-2223 and RE-123 Tapes Over 8 Decades of Electric Fields Including Flux Creep and Flux Flow Regime2017

    • Author(s)
      Yuta Onodera, Takanobu Kiss, Kohei Hisajima, Shyam Mohan, Kazutaka Imamura,Takumi Suzuki, Kohei Higashikawa, Masayoshi Inoue, Akira Ibi, Takato Machi, Teruo Izumi
    • Organizer
      The 2nd Asian Applied Physics Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Remarks] 九州大学研究者情報

    • URL

      http://hyoka.ofc.kyushu-u.ac.jp/search/details/K000239/index.html

    • Related Report
      2018 Annual Research Report

URL: 

Published: 2017-07-21   Modified: 2021-01-27  

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