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Development in design technology of advanced MgB_2 wires for future electric device windings

Research Project

Project/Area Number 16206032
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Electronic materials/Electric materials
Research InstitutionKyushu University

Principal Investigator

FUNAKI Kazuo  Kyushu University, Research Institute of Superconductor Superconductor Science and Systems, Professor (60091352)

Co-Investigator(Kenkyū-buntansha) IWAKUMA Masataka  Kyushu University, Faculty of Information Science and Electrical Engineering, Associate Professor (30176531)
KISU Takanobu  Kyushu University, Faculty of Information Science and Electrical Engineering, Professor (00221911)
KAJIKAWA Kazuhiro  Kyushu University, Research Institute of Superconductor Superconductor Science and Systems, Associate Professor (10294894)
KUMAKURA Hiroaki  Kyushu University, National Institute for Materials Science, Superconducting Materials Center, Managing Director (90354307)
MITO Toshiyuki  Kyushu University, National Institute for Fusion Science, Professor (10166069)
岡田 道哉  (株)日立製作所, 材料研究所・エネルギー材料研究部, 部長(研究職)
林 秀美  九州電力(株), 総合研究所・電力貯蔵技術グループ, 主幹研究員
Project Period (FY) 2004 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥49,790,000 (Direct Cost: ¥38,300,000、Indirect Cost: ¥11,490,000)
Fiscal Year 2007: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2006: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2005: ¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2004: ¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
KeywordsMgB_2 / in-situ method / ex-situ method / critical current density / AC loss / thermal stability / normal zone propagation / conduction cooling / パウダー・イン・チューブ法 / MgB_2法 / ex situ法 / 常伝導伝播 / 通電特性 / 熱処理温度
Research Abstract

Magnesium diboride, MgB_2, has a new metallic superconductor with a critical temperature about 20 K higher than Nb'll, one of usual metallic ones and furthermore a potential to develop low-cost advanced superconducting wires without liquid helium cooing because of the simple fabrication processes. Aim of the present study is to evaluate various properties of superconducting MgB_2 wires and to propose structural design for improving the electromagnetic and thermal properties and fabrication processes for the advanced structures. The main results in the study are summarized in the following.
1) From a viewpoint of improving the transport property of superconducting MgB_2wires especially in high magnetic field, advanced methods were given for the in situmethod by addition of impurities and for the ex-situ method by controlling initial powders of MgB_2.
2) As a candidate of long-scale low-AC-loss MgB_2 wires, composite wires with a CuNi sheath and Ta barriers for the filaments were successfu … More lly fabricated by the in-situ method with a gun-drill process and their AC losses were measured by a standardized pickup coil method. The results were reproduced by the usual theory of superconducting multifilamentary wires and, on the basis of the empirical study, structural design for the lower AC loss wires was proposed.
3) For basic approach to quench analysis in future MgB_2 coils, normal zone propagation in the wires were experimentally studied by inducing an initial hot spot by a heater in liquid helium or under a conduction cooling condition, and the responses of the normal zone were well explained by theoretical thermal model with transient cooling effects. The stability in a large-capacity conductor with assembled16strands was tested by comparing the critical current of the conductor with that of the strands. The results suggest future MgB_2coils can be constructed with high stability and flexibility in the quench protection design.
4) A conduction-cooling test coil with a100m-class MgB_2multifilamentary wire was successfully fabricated by a wind and react method. The characteristic tests with direct over current and alternating current were performed in a temperature range
between 15K and 30K. It was shown experimentally that MgB_2coils have a high stability margin because of the critical temperature higher than 30K. Less

Report

(5 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (57 results)

All 2008 2007 2006 2005 2004

All Journal Article (40 results) (of which Peer Reviewed: 20 results) Presentation (17 results)

  • [Journal Article] AC loss properties of Cu-sheathed MgB_2 composites with Nb barriers2008

    • Author(s)
      K. Funaki, T. Sueyoshi, K. Kajikawa, M. Iwakuma, K. Tanaka, M. 0kada, H. Kumakura, H. Hayashi
    • Journal Title

      Journal of Physics : Conference Series 97

      Pages: 12316-12316

    • NAID

      10019981482

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Fundamental investigation of a superconducting level sensor for liquid hydrogen with MgB_2 wire2008

    • Author(s)
      K. Kajikawa, K. Tomachi, N. Maema, M. Matsuo, S. Sato, K. Funaki H. Kumakura, K. Tanaka, M. Okada, K. Nakamichi, Y. Kihara, T. Kamiya, I. Aoki
    • Journal Title

      Journal of Physics : Conf 97

      Pages: 12140-12140

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] AC loss properties of MgB_2 multifilament wires2008

    • Author(s)
      K. Tanaka, K. Funaki, T. Sueyoshi, Y. Sasashige, K. Kajikawa, M. Iwakuma, M. Okada, H. Kumakura, H. Hayashi
    • Journal Title

      Supercond. Sci. Technol. 21

      Pages: 95007-95007

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] MgB_2超伝導線材における常伝導部伝播現象の定量的評価2008

    • Author(s)
      船木和夫, 久保輝朗, 中尾彰浩, 佐藤誠樹, 松尾政晃, 柁川一弘, 田中和英, 岡田道哉, 熊倉浩明, 林秀美
    • Journal Title

      低温工学 43

      Pages: 423-429

    • NAID

      10021854514

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] AC loss properties of Cu-sheathed MgB_2 composites with Nb barriers2008

    • Author(s)
      K. Funaki, T. Sueyoshi, K. Kajikawa, M. Iwakuma, K. Tanaka, M. Okada, H. Kumakura, H. Hayashi
    • Journal Title

      Journal of Physics: Conference Series Vol. 97

      Pages: 12316-12316

    • NAID

      10019981482

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Fundamental investigation of a superconducting level sensor for liquid hydrogen with MgB_2 wire2008

    • Author(s)
      K. Kajikawa, K. Tomachi, N. Maema, M. Matsuo, S. Sato, K. Funaki H. Kumakura, K. Tanaka, M. Okada, K. Nakamichi, Y. Kihara, T. Kamiya, I. Aoki
    • Journal Title

      Journal of Physics:Conference Series Vol. 97

      Pages: 12140-12140

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] AC loss properties of MgB_2 multifilament wires2008

    • Author(s)
      K. Tanaka, K. Funaki, T. Sueyoshi, Y. Sasashige, K. Kajikawa, M. Iwakuma, M. Okada, H. Kumakura, H. Hayashi
    • Journal Title

      Supercond. Sci. Technol. Vol. 21

      Pages: 95007-95007

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Quantitative analysis of normal zone propagation in MgB_2 superconducting wires2008

    • Author(s)
      K. Funaki, T. Kubo, A. Nakao, S. Sato, M. Matsuo, K. Kajikawa, K. Tanaka, M. Okada, H. Kumakura, H. Hayashi
    • Journal Title

      Cryogenic Engineering Vol. 43

      Pages: 423-429

    • NAID

      10021854514

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] AC loss properties of Cu-sheathed MgB_2 composites with Nb barriers2008

    • Author(s)
      K. Funaki, T. Sueyoshi, K. Kajikawa, M. Iwakuma, K. Tanaka, M. Okada, H. Kumakura, H. Hayashi
    • Journal Title

      Journal of Physics: Conference Series 97

      Pages: 12316-12316

    • NAID

      10019981482

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fundamental investigation of a superconducting level sensor for liquid hydrogen with MgB_2 wire2008

    • Author(s)
      K. Kajikawa, K. Tomachi, N. Maema, M. Matsuo, S. Sato, K. Funaki, H. Kumakura, K. Tanaka, M. Okada, K. Nakamichi, Y. Kihara, T. Kamiya, I. Aoki
    • Journal Title

      Journal of Physics: Conference Series 97

      Pages: 12140-12140

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] AC loss properties of MgB_2 multifilament wires2008

    • Author(s)
      K. Tanaka, K. Funaki1, T. Sueyoshi1, Y. Sasashige1, K. Kajikawa1, M. Iwakuma1, M. Okada, H. Kumakura, H. Havashi
    • Journal Title

      Supercond. Sci. Technol. 21

      Pages: 95007-95007

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] MgB_2超伝導線材における常伝導部伝播現象の定量的評価2008

    • Author(s)
      船木和夫、久保輝朗、中尾彰浩、佐藤誠樹、松尾政晃、柁川一弘、田中和英、岡田道哉、熊倉浩明、林秀美
    • Journal Title

      低温工学 43

      Pages: 423-429

    • NAID

      10021854514

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Superconducting properties of in situ powder-in-tube-processed MgB_2 tapes fabricated with sub-micrometre Mg powder prepared by an arc-plasma method2007

    • Author(s)
      H. Yamada, N. Uchiyama, A. MatsuMoto, H. Kitaguchi, H. Kumakura
    • Journal Title

      Supercond. Sci. Technol. 20

      Pages: 1-4

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] The excellent superconducting properties of in situ powder-in-tubeprocessed MgB_2 tapes with both ethyl toluene and SiC powder added2007

    • Author(s)
      H. Yamada, N. Uchiyama, A. Matsumoto, H. Kitaguchi, H. Kumakura
    • Journal Title

      Supercond. Sci. Tecbnol. 20

      Pages: 30-33

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Stoichiometry dependence of the critical current density in pure andnano-SiC doped MgB_2/Fe tapes2007

    • Author(s)
      C. H. Jiang, H. Kumakura
    • Journal Title

      Physica C 451

      Pages: 71-76

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Superconducting properties of in situ powder-in-tube-processed MgB_2 tapes fabricated with sub-micrometre Mg powder prepared by an arc-plasma method2007

    • Author(s)
      H. Yamada, N. Uchiyama, A. Matsumoto, H. Kitaguchi, H. Kumakura
    • Journal Title

      Supercond. Sci. Technol. Vol. 20

      Pages: 1-4

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] The excellent supercon ducting properties of in situ powder-in-tube processed MgB_2 tapes with both ethyltoluene and SiC powder added2007

    • Author(s)
      H. Yamada, N. Uchiyama, A. Matsumoto, H. Kitaguchi, H. Kumakura
    • Journal Title

      Supercond. Sci. Technol. Vol. 20

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Stoichiometry dependence of the critical current density in pure and nano-SiC doped MgB2/Fe tapes2007

    • Author(s)
      C. H. Jiang, H. Kumakura
    • Journal Title

      Physica C Vol. 451

      Pages: 71-76

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Superconducting properties of in situ powder-in-tube-processed MgB_2 tapes fabricated with sub-micrometer Mg powder prepared by an arc-plasma method2007

    • Author(s)
      H. Yamada, N. Uchiyama, A. Matsumoto, H. Kitaguchi, H. Kumakura
    • Journal Title

      Supercond. Sci. Technol. 20

      Pages: 1-4

    • NAID

      10019274942

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The excellent superconducting properties of in situ powder-in-tube processed MgB_2 tapes with both ethyltoluene and SiC powder added2007

    • Author(s)
      H. Yamada, N. Uchiyama, A. Matsumoto, H. Kitaguchi, H. Kumakura
    • Journal Title

      Supercond. Sci. Technol. 20

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stoichiometry dependence of the critical current density in pure and nano-SiC doped MgB_2/Fe tapes2007

    • Author(s)
      C. H. Jiang, H. Kumakura
    • Journal Title

      Physica C 4

      Pages: 71-76

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication and properties of powder-in-tube-processed MgB_2 tape conductors2007

    • Author(s)
      H. Kumakura, A. Matsaumoto, T. Nakane, H. Kitaguchi
    • Journal Title

      Physica C 456

      Pages: 196-202

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Composite process for the fabrication of MgB? wire using ductile Mg-Lialloy2007

    • Author(s)
      K Togano, H Fujii, T Takeuchi, H Kumakura
    • Journal Title

      Supercond. Sci. Techol. 20

      Pages: 239-243

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Superconducting properties of in situ power-in-tube-processed MgB? tapes fabricated with sub-micrometre Mg power prepared by an arc-plasma method2007

    • Author(s)
      H Yamada, N Uchiyama, A Matsumoto, H Kitaguchi, H Kumakura
    • Journal Title

      Supercond. Sci. Technol. 20

      Pages: 1-4

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Stoichiometry dependence of the critical current density in pure and nano-SiC doped MgB?/Fe tapes2007

    • Author(s)
      C H Jiang, H Kumakura
    • Journal Title

      Physica C 451

      Pages: 71-76

    • Related Report
      2006 Annual Research Report
  • [Journal Article] NORMAL ZONE PROPAGATION IN MGB WIRES IMMERSED IN LIQUID HELIUM2007

    • Author(s)
      K Funaki, N Maema, M Matsuo, S Sato, K Kajikawa, M Okada, H Kumakura
    • Journal Title

      To br published in the Proceedings of ICEC21 (in press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Effect of aromatic hydrocarbon addition on in situ powder-in-tubeprocessed MgB_2 tapes2006

    • Author(s)
      H. Yamada, M. Hirakawa, H. Kumakura, H. Kitaguchi
    • Journal Title

      Supercond. Sci. Tecbnol. 19

      Pages: 175-177

    • NAID

      10016931449

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Upper critical field, irreversibility field, and critical currentdensity of powder-in-tube-processed MgB_2/Fe tapes2006

    • Author(s)
      H. Kumakura, H. Kitaguchi, A. Matsumo to, H. Yamada
    • Journal Title

      Supercond. Sci. Technol. 19

      Pages: 1042-1046

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Normal zone propagation in MgB_2 wires immersed in liquid helium2006

    • Author(s)
      K. Funaki, N. Maema, M. Matsuo, S. Sato, K. Kaijikawa, M. Okada, H. Kumakura
    • Journal Title

      Proceedings of ICEC21/ICMC2006 2

      Pages: 153-156

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Effect of aromatic hydrocarbon addition on in situ powder-in-tube processec MgB2 tapes2006

    • Author(s)
      H. Yamada, M. Hirakawa, H. Kumakura, H. Kitaguchi
    • Journal Title

      Supercond. Sci. Technol. Vol. 19

      Pages: 175-177

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Upper critical field, irreversibility field, and critical current density of powder-in-tube-processed MgB_2Fe tapes2006

    • Author(s)
      H. Kumakura, H. Kitaguchi, A. Matsumoto, H. Yamada
    • Journal Title

      Supercond. Sci. Technol. Vol. 19

      Pages: 1042-1046

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Normal zone propagation in MgB_2 wires immersed in liquid helium2006

    • Author(s)
      K. Funaki, N. Maema, M. Matsuo, S. Sato, K. Kajikawa, M. Okada, H. Kumakura
    • Journal Title

      Proceedings of ICEC21/ICMC2006 Vol. 2

      Pages: 153-156

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Effect of aromatic hydrocarbon addition on in situ powder-in-tube processed MgB2 tapes2006

    • Author(s)
      H Yamada, M Hirakawa, H Kumakura, H Kiaguchi
    • Journal Title

      Supercond.Sci.Technol. 19・2

      Pages: 175-177

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Upper critical field, irreversibility field, and critical current density of powder-in-tube-processed MgB2/Fe tapes2006

    • Author(s)
      H Kumakura, H Kitaguchi, A Matsumoto, H Yamada
    • Journal Title

      Supercond.Sci.Technol. 19・8

      Pages: 1042-1046

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Superior high-field current density in slightly Mg-deficient MgB_2 tapes2005

    • Author(s)
      C. H. Jiang, T. Nakane, H. Kumakura
    • Journal Title

      Appl. Phys. Lett. 87

      Pages: 252505-252505

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Superior high-field current density in slightly Mg-deficient MglB_2 tapes2005

    • Author(s)
      C. H. Jiang, T. Nakane, H. Kumakura
    • Journal Title

      Appl. Phys. Lett. Vol. 87

      Pages: 252505-252505

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Superior high-field current density in slightly Mg-deficient MgB2 tapes2005

    • Author(s)
      C.H.Jiang, T.Nakane, H.Kumakura
    • Journal Title

      Appl.Phys.Lett 87

      Pages: 252505-252505

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Critical Current Densities of Powder-In-Tube(PIT)-processed MgB_2 Tapes2004

    • Author(s)
      H. Kumakura, A. Matsumoto, H. Kitaguchi, H. Hatakeyama
    • Journal Title

      Materials Transactions 45

      Pages: 3056-3059

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Critical Current Densities of Powder-In-Tube(PIT)-processed MgB_2 Tapes2004

    • Author(s)
      H. Kumakura, A. Matsumoto, H. Kitaguchi, H. Hatakeyama
    • Journal Title

      Materials Transactions Vol. 45

      Pages: 3056-3059

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Critical Current Densities of Powder-In-Tube(PIT)-processed MgB2 Tapes2004

    • Author(s)
      H.Kumakura, A.Matsumoto, H.Kitaguchi, H.Hatakeyama
    • Journal Title

      Materials Transactions Vol.45,No.10

      Pages: 3056-3059

    • Related Report
      2004 Annual Research Report
  • [Presentation] 液体ヘリウム温度でのMgB_2線材の常伝導部の伝播現象2008

    • Author(s)
      中尾彰浩, 久保輝朗, 田中和英, 松尾政晃, 佐藤誠樹, 柁川一弘, 船木和夫, 岡田道哉, 熊倉浩明, 林秀美
    • Organizer
      電気関係学会九州支部第61回連合大会
    • Place of Presentation
      大分大学、大分
    • Year and Date
      2008-09-25
    • Related Report
      2007 Annual Research Report
  • [Presentation] TaバリアをもつCuNiシースMgB_2多芯線の交流損失2008

    • Author(s)
      田中和英, 船木和夫, 末吉貴洋, 笹重有伺, 柁川一弘, 岩熊成卓, 岡田道哉, 熊倉浩明, 林秀美, 三戸利行
    • Organizer
      第78回低温工学・超電導学会
    • Place of Presentation
      明星大学、東京
    • Year and Date
      2008-05-26
    • Related Report
      2007 Annual Research Report
  • [Presentation] 伝導冷却されたMgB_2線材における常伝導部伝播の数値シミュレーション2008

    • Author(s)
      久保輝朗, 中尾彰浩, 田中和英, 松尾政晃, 佐藤誠樹, 柁川一弘, 船木和夫, 岡田道哉, 熊倉浩明, 林秀美
    • Organizer
      第78回低温工学・超電導学会
    • Place of Presentation
      明星大学、東京
    • Year and Date
      2008-05-26
    • Related Report
      2007 Annual Research Report
  • [Presentation] PIT法MgB_2線材における不純物添加効果2008

    • Author(s)
      熊倉浩明、松本明善、北口仁、山田秀之、五十嵐基仁
    • Organizer
      第55回応用物理学関係連合講演会
    • Place of Presentation
      日本大学、千葉
    • Year and Date
      2008-03-29
    • Related Report
      2007 Annual Research Report
  • [Presentation] 液体ヘリウム中でのMgB_2線材の常伝導部伝播における断熱層の影響2008

    • Author(s)
      久保輝朗, 中尾彰浩, 松尾政晃, 佐藤誠樹, 柁川一弘, 船木和夫, 田中和英, 岡田道哉, 熊倉浩明, 林秀美
    • Organizer
      平成20年電気学会全国大会
    • Place of Presentation
      福岡工業大学、福岡
    • Year and Date
      2008-03-21
    • Related Report
      2007 Annual Research Report
  • [Presentation] AC Loss Properties of Multifilamentary MgB2 Wires2007

    • Author(s)
      K. Funaki, T. Sueyoshi, K. Kajikawa, M. Iwakuma, K. Tanaka, M. Okada, H. Kumakura, H. Hayashi
    • Organizer
      Asian Conf. 2007 on Applied Super conductivity and Cryogenics
    • Place of Presentation
      Xi'an, China
    • Year and Date
      2007-12-03
    • Related Report
      2007 Annual Research Report
  • [Presentation] エチルトルエン及びSiC粉末を同時添加したin situ PIT法MgB_2テープの超伝導特性(第二報)-長尺線作製のための事前熱処理の適用-2007

    • Author(s)
      山田秀之、五十嵐基仁、熊倉浩明、北口仁、松本明善
    • Organizer
      第77回低温工学・超電導学会
    • Place of Presentation
      東北大学、仙台
    • Year and Date
      2007-11-22
    • Related Report
      2007 Annual Research Report
  • [Presentation] NbバリアをもつCuシースMgB_2多心線の交流損失特性2007

    • Author(s)
      船木和夫, 末吉貴洋, 柁川一弘, 岩熊成卓, 田中和英, 岡田道哉, 熊倉浩明, 林秀美
    • Organizer
      第77回低温工学・超電導学会
    • Place of Presentation
      東北大学、仙台
    • Year and Date
      2007-11-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] 液体ヘリウム中でのMgB2線材の常伝導部伝播における熱的断熱層の影響2007

    • Author(s)
      久保輝朗, 中尾彰浩, 松尾政晃, 佐藤誠樹, 柁川一弘, 船木和夫, 田中和英, 岡田道哉, 熊倉浩明, 林秀美
    • Organizer
      第77回低温工学・超電導学会
    • Place of Presentation
      東北大学、仙台
    • Year and Date
      2007-11-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] AC Loss Properties Of Cu-Sheathed MgB2 Composites With Nb Barriers2007

    • Author(s)
      K. Funaki, T. Sueyoshi, K. Kajikawa, M. Iwakuma, K. Tanaka, M. Okada, H. Kumakura, H. Hayashi
    • Organizer
      8th European Conf. on Applied Superconductivity
    • Place of Presentation
      Brussels, Belgium
    • Year and Date
      2007-09-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] AC Loss Properties Of Cu-Sheathed MgB_2 Composites With Nb Barriers2007

    • Author(s)
      K. Funaki, T. Sueyoshi, K. Kajikawa, M. Iwakuma. K. Tanaka, M. Okada, H. Kumakura, H. Hayashi
    • Organizer
      8th European Conf. on Applied Supercond.
    • Place of Presentation
      Brussels
    • Year and Date
      2007-09-18
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Fundamental investigation of a superconducting level sensor for liquid hydrogen with MgB_2 wire2007

    • Author(s)
      K. Kajikawa, K. Tomachi, N. Maema, M. Matsuo, S. Sato, K. Funaki, H. Kumakura, K. Tanaka, M. Okada, K. Nakamichi, Y. Kihara, T. Kamiya, I. Aoki
    • Organizer
      8th European Conf. on Applied Supercond.
    • Place of Presentation
      Brussels
    • Year and Date
      2007-09-18
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Fundamental investigation of a superconducting level sensor for liquid hydrogen with MgB_2 wire2007

    • Author(s)
      K. Kajikawa, K. Tomachi, N. Maema, M. Matsuo, S. Sato, K. Funaki, H. Kumakura, K. Tanaka, M. Okada, K. Nakamichi, Y. Kihara, T. Kamiya, I. Aoki
    • Organizer
      8th European Conf. on Applied Sunerconductivity
    • Place of Presentation
      Brussels, Belgium
    • Year and Date
      2007-09-18
    • Related Report
      2007 Annual Research Report
  • [Presentation] MgB_2線材を用いた液体水素用液面計の可能性に関する検討2007

    • Author(s)
      柁川一弘, 戸町恭平, 前間登, 松尾政晃, 佐藤誠樹, 船木和夫, 熊倉浩明, 田中和英, 岡田道哉, 中道憲治, 木原勇一, 神谷卓伸, 青木五男
    • Organizer
      第76回低温工学・超電導学会
    • Place of Presentation
      千葉大学、千葉
    • Year and Date
      2007-05-16
    • Related Report
      2007 Annual Research Report
  • [Presentation] エチルトルエン及びSiC粉末を同時添加したin situ PIT法MgB_2テープの超伝導特性2007

    • Author(s)
      山田秀之、内山順仁、熊倉浩明、北口仁、松本明善
    • Organizer
      第76回低温工学・超電導学会
    • Place of Presentation
      千葉大学、千葉
    • Year and Date
      2007-05-16
    • Related Report
      2007 Annual Research Report
  • [Presentation] Normal zone propagation in MgB_2 wires immersed in liquid helium2006

    • Author(s)
      K. Funaki, N. Maema, M. Matsuo, S. Sato, K. Kajikawa, M. Okada, H. Kumakura
    • Organizer
      CryoPtague 2006
    • Place of Presentation
      Prague
    • Year and Date
      2006-07-20
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] MgB_2超伝導線材の常伝導伝播速度の液体ヘリウム中での実験的検討2005

    • Author(s)
      前間登, 松尾政晃, 佐藤誠樹, 柁川一弘, 船木和夫
    • Organizer
      電気関係学会九州支部第58回連合大会
    • Place of Presentation
      飯塚
    • Year and Date
      2005-09-29
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary

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Published: 2004-04-01   Modified: 2016-04-21  

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