Nondestructive diagnostics of narrow coated conductors for electric power applications

Kohei Higashikawa, Kenta Katahira, Masayoshi Inoue, Takanobu Kiss, Yuki Shingai, Masaya Konishi, Kazuya Ohmatsu, Takato Machi, Masateru Yoshizumi, Teruo Izumi, Yuh Shiohara

研究成果: ジャーナルへの寄稿学術誌査読

13 被引用数 (Scopus)


We have succeeded in characterizing local critical currents and electromagnetically equivalent widths of slit coated conductors (CCs) as a function of their longitudinal position based on reel-to-reel scanning Hall-probe microscopy (RTR-SHPM). The aim is to make a quality control of slit CCs intended for electric power application, such as electric power cable in particular, for ac losses reduction. Long pieces of slit CCs, i.e., collectively 40-m-long pieces of 2-mm-wide slit CCs, were transferred in their longitudinal direction, and continuously magnetized in a liquid nitrogen bath; the magnetic field distributions of the samples were then measured by scanning a Hall sensor. From the magnetic field distributions, we could evaluate local critical currents and the equivalent widths of the slit CCs as a function of their longitudinal position. The difference between the equivalent width and the geometrical width of a CC corresponds to the damage due to the slitting process. This means that we can discuss such damage precisely together with its statistics along the longitudinal direction. This kind of diagnostics will be a very powerful technique for establishing slitting processes for producing narrow CCs for overcoming the issue of ac losses for electric power application comprising CCs.

ジャーナルIEEE Transactions on Applied Superconductivity
出版ステータス出版済み - 2014

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学


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