Stability test results on the aluminum stabilized superconductor for the helical coils of LHD

Nagato Yanagi, Takashi Satow, Toshiyuki Mito, Shinsaku Imagawa, Kazuya Takahata, Akifumi Iwamoto, Hirotaka Chikaraishi, Satarou Yamaguchi, Sadao Satoh, Osamu Motojima, Soh Noguchi, Atsushi Ishiyama

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    Abstract

    Stability tests have been carried out on short samples of the aluminum/copper stabilized composite-type superconductors developed and used for the pool-cooled helical coils of the Large Helical Device. The waveform of the longitudinal voltage initiated by resistive heaters shows a short-time rise before reaching a final value, which seems to correspond to the diffusion process of transport current into the pure aluminum stabilizer. The propagation velocity has a finite value even for the transport current being lower than the recovery current, and it differs depending on the direction with respect to the transport current.

    Original languageEnglish
    Pages (from-to)1113-1116
    Number of pages4
    JournalIEEE Transactions on Applied Superconductivity
    Volume9
    Issue number2 PART 1
    DOIs
    Publication statusPublished - 1999

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    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Physics and Astronomy (miscellaneous)

    Cite this

    Yanagi, N., Satow, T., Mito, T., Imagawa, S., Takahata, K., Iwamoto, A., Chikaraishi, H., Yamaguchi, S., Satoh, S., Motojima, O., Noguchi, S., & Ishiyama, A. (1999). Stability test results on the aluminum stabilized superconductor for the helical coils of LHD. IEEE Transactions on Applied Superconductivity, 9(2 PART 1), 1113-1116. https://doi.org/10.1109/77.783493