Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Progress in R＆D of coated conductor in M-PACC project

  • Izumi, T. (Superconductivity Research Laboratory, International Superconductivity Technology) ;
  • Ibi, A. (Superconductivity Research Laboratory, International Superconductivity Technology) ;
  • Nakaoka, K. (Superconductivity Research Laboratory, International Superconductivity Technology) ;
  • Taneda, T. (Superconductivity Research Laboratory, International Superconductivity Technology) ;
  • Yoshida, T. (Superconductivity Research Laboratory, International Superconductivity Technology) ;
  • Takagi, Y. (Superconductivity Research Laboratory, International Superconductivity Technology) ;
  • Nakamura, T. (Superconductivity Research Laboratory, International Superconductivity Technology) ;
  • Machi, T. (Superconductivity Research Laboratory, International Superconductivity Technology) ;
  • Katayama, K. (Superconductivity Research Laboratory, International Superconductivity Technology) ;
  • Sakai, N. (Superconductivity Research Laboratory, International Superconductivity Technology) ;
  • Yoshizumi, M. (Superconductivity Research Laboratory, International Superconductivity Technology) ;
  • Koizumi, T. (SWCC Showa Cable Systems Co., Ltd.) ;
  • Kimura, K. (SWCC Showa Cable Systems Co., Ltd.) ;
  • Kato, T. (Japan Fine Ceramics Center) ;
  • Kiss, T. (Kyushu University) ;
  • Shiohara, Y. (Superconductivity Research Laboratory, International Superconductivity Technology)
  • Received : 2014.06.09
  • Accepted : 2014.06.24
  • Published : 2014.06.30
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Abstract

The five-year national project in Japan for R&D of coated conductors and applications, named as the Materials and Power Applications of Coated Conductors (M-PACC) project, was finished at the end of FY2013. The project consists of four sub-themes as cable, transformer, SMES and coated conductors. In the theme of coated conductors, the fabrication process had been developed to satisfy the requirements from the applications such as in-field $I_c$ performance, low AC loss in the long tapes etc. Through the project, the remarkable progress was achieved as follows; a high in-field minimum $I_c$ value over 54A/cm-width under 3T at 77K was realized in a 200m long EuBCO tape with artificial pinning centers of $BaHfO_3$ by the pulsed laser deposition (PLD) technique on the IBAD template. On the other hand, the AC loss reduction was confirmed in the tapes fabricated by both PLD and the metal organic deposition (MOD) techniques by scribing 100m tapes into 10-filamments. Additionally, the mechanism of the delamination phenomenon was systematically investigated and the strength was improved by eliminating the origins of the weak points in the films. Through the development, all targeted goals were accomplished and the several results were appreciated as a world champion data.

Keywords

References

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