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

doi:10.1109/77.783493

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

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

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 language	English
Pages (from-to)	1113-1116
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	9
Issue number	2 PART 1
DOIs	https://doi.org/10.1109/77.783493
Publication status	Published - 1999

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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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.",

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AU - Yanagi, Nagato

AU - Satow, Takashi

AU - Mito, Toshiyuki

AU - Imagawa, Shinsaku

AU - Takahata, Kazuya

AU - Iwamoto, Akifumi

AU - Chikaraishi, Hirotaka

AU - Yamaguchi, Satarou

AU - Satoh, Sadao

AU - Motojima, Osamu

AU - Noguchi, Soh

AU - Ishiyama, Atsushi

PY - 1999

Y1 - 1999

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AB - 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.

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

Abstract

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