AC loss measurements of the experiments on a single inner vertical coil (EXSIV) for the large helical device

Toshiyuki Mito; Kazuya Takahata; Akifumi Iwamoto; Ryuji Maekawa; Nagato Yanagi; Takashi Satow; Osamu Motojima; Junya Yamamoto

doi:10.1109/77.614497

AC loss measurements of the experiments on a single inner vertical coil (EXSIV) for the large helical device

Toshiyuki Mito, Kazuya Takahata, Akifumi Iwamoto, Ryuji Maekawa, Nagato Yanagi, Takashi Satow, Osamu Motojima, Junya Yamamoto

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Abstract

The AC losses of the Inner Vertical (IV) coil have been measured during the Experiments on a Single Inner Vertical coil (EXSIV). The IV coils are the smallest poloidal coils of the Large Helical Device (LHD) and their inner and outer diameters are 3.2 m and 4.2 m, respectively. The coil consists of 16 pancake coils wound with the cable-in-conduit conductors (CICC) whose strands are NbTi/Cu without any surface coating. The AC losses were measured with a calorimetric method during excitation tests and current shut-off tests. In addition to the usual inter-strand coupling losses with short time constants, unexpected coupling losses were observed due to the coupling current of a long time constant.

Original language	English
Pages (from-to)	330-334
Number of pages	5
Journal	IEEE Transactions on Applied Superconductivity
Volume	7
Issue number	2 PART 1
DOIs	https://doi.org/10.1109/77.614497
State	Published - 1997
Externally published	Yes

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abstract = "The AC losses of the Inner Vertical (IV) coil have been measured during the Experiments on a Single Inner Vertical coil (EXSIV). The IV coils are the smallest poloidal coils of the Large Helical Device (LHD) and their inner and outer diameters are 3.2 m and 4.2 m, respectively. The coil consists of 16 pancake coils wound with the cable-in-conduit conductors (CICC) whose strands are NbTi/Cu without any surface coating. The AC losses were measured with a calorimetric method during excitation tests and current shut-off tests. In addition to the usual inter-strand coupling losses with short time constants, unexpected coupling losses were observed due to the coupling current of a long time constant.",

author = "Toshiyuki Mito and Kazuya Takahata and Akifumi Iwamoto and Ryuji Maekawa and Nagato Yanagi and Takashi Satow and Osamu Motojima and Junya Yamamoto",

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journal = "IEEE Transactions on Applied Superconductivity",

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T1 - AC loss measurements of the experiments on a single inner vertical coil (EXSIV) for the large helical device

AU - Mito, Toshiyuki

AU - Takahata, Kazuya

AU - Iwamoto, Akifumi

AU - Maekawa, Ryuji

AU - Yanagi, Nagato

AU - Satow, Takashi

AU - Motojima, Osamu

AU - Yamamoto, Junya

PY - 1997

Y1 - 1997

N2 - The AC losses of the Inner Vertical (IV) coil have been measured during the Experiments on a Single Inner Vertical coil (EXSIV). The IV coils are the smallest poloidal coils of the Large Helical Device (LHD) and their inner and outer diameters are 3.2 m and 4.2 m, respectively. The coil consists of 16 pancake coils wound with the cable-in-conduit conductors (CICC) whose strands are NbTi/Cu without any surface coating. The AC losses were measured with a calorimetric method during excitation tests and current shut-off tests. In addition to the usual inter-strand coupling losses with short time constants, unexpected coupling losses were observed due to the coupling current of a long time constant.

AB - The AC losses of the Inner Vertical (IV) coil have been measured during the Experiments on a Single Inner Vertical coil (EXSIV). The IV coils are the smallest poloidal coils of the Large Helical Device (LHD) and their inner and outer diameters are 3.2 m and 4.2 m, respectively. The coil consists of 16 pancake coils wound with the cable-in-conduit conductors (CICC) whose strands are NbTi/Cu without any surface coating. The AC losses were measured with a calorimetric method during excitation tests and current shut-off tests. In addition to the usual inter-strand coupling losses with short time constants, unexpected coupling losses were observed due to the coupling current of a long time constant.

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AN - SCOPUS:0031166307

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JF - IEEE Transactions on Applied Superconductivity

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ER -

AC loss measurements of the experiments on a single inner vertical coil (EXSIV) for the large helical device

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