Excitation test results on a single inner vertical coil for the large helical device

K. Takahata; T. Mito; T. Satow; A. Nishiimura; S. Yamada; H. Chikaraishi; N. Yanagi; A. Iwamoto; R. Maekawa; S. Imagawa

doi:10.1109/77.614537

Excitation test results on a single inner vertical coil for the large helical device

K. Takahata, T. Mito, T. Satow, A. Nishiimura, S. Yamada, H. Chikaraishi, N. Yanagi, A. Iwamoto, R. Maekawa, S. Imagawa

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10 Scopus citations

Abstract

Excitation experiments on a single inner vertical coil for the Large Helical Device (LHD) were carried out to confirm its performance. The coil is one of theLHD's poloidal field coils and consists of a forced-flow Nb-Ti cable-in-conduit conductor (CICC). After coo Id own for 250 hours, the superconducting transition of the whole coil was confirmed. Pressure drops were measured during the cooldown to determine the coil's hydraulic characteristics. Then, the coil was successfully energized up to the specified current, 20. 8 kA. In the experiments, heat generation of joints, radial displacement and acoustic emission (AE) were measured.

Original language	English
Pages (from-to)	477-480
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	7
Issue number	2 PART 1
DOIs	https://doi.org/10.1109/77.614537
State	Published - 1997
Externally published	Yes

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abstract = "Excitation experiments on a single inner vertical coil for the Large Helical Device (LHD) were carried out to confirm its performance. The coil is one of theLHD's poloidal field coils and consists of a forced-flow Nb-Ti cable-in-conduit conductor (CICC). After coo Id own for 250 hours, the superconducting transition of the whole coil was confirmed. Pressure drops were measured during the cooldown to determine the coil's hydraulic characteristics. Then, the coil was successfully energized up to the specified current, 20. 8 kA. In the experiments, heat generation of joints, radial displacement and acoustic emission (AE) were measured.",

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AU - Takahata, K.

AU - Mito, T.

AU - Satow, T.

AU - Nishiimura, A.

AU - Yamada, S.

AU - Chikaraishi, H.

AU - Yanagi, N.

AU - Iwamoto, A.

AU - Maekawa, R.

AU - Imagawa, S.

PY - 1997

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N2 - Excitation experiments on a single inner vertical coil for the Large Helical Device (LHD) were carried out to confirm its performance. The coil is one of theLHD's poloidal field coils and consists of a forced-flow Nb-Ti cable-in-conduit conductor (CICC). After coo Id own for 250 hours, the superconducting transition of the whole coil was confirmed. Pressure drops were measured during the cooldown to determine the coil's hydraulic characteristics. Then, the coil was successfully energized up to the specified current, 20. 8 kA. In the experiments, heat generation of joints, radial displacement and acoustic emission (AE) were measured.

AB - Excitation experiments on a single inner vertical coil for the Large Helical Device (LHD) were carried out to confirm its performance. The coil is one of theLHD's poloidal field coils and consists of a forced-flow Nb-Ti cable-in-conduit conductor (CICC). After coo Id own for 250 hours, the superconducting transition of the whole coil was confirmed. Pressure drops were measured during the cooldown to determine the coil's hydraulic characteristics. Then, the coil was successfully energized up to the specified current, 20. 8 kA. In the experiments, heat generation of joints, radial displacement and acoustic emission (AE) were measured.

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Excitation test results on a single inner vertical coil for the large helical device

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