COOLING AND EXCITATION TESTS OF AN INNER VERTICAL COIL FOR THE LARGE HELICAL DEVICE

Authors
SATOW T MITO T TAKAHATA K YAMAMOTO J SATOH S NISHIMURA A YAMADA S YANAGI N CHIKARAISHI H IWAMOTO A TANAHASHI S IMAGAWA S TAMURA H YAMAZAKI K YAMAGUCHI S WATANABE K YAMADA H NODA N SAGARA A AKAISHI K KUBOTA Y INOUE N SUZUKI H MORISAKI T KITAGAWA S OHYABU N KOMORI A BABA T MORIUCHI S OHBA K IIMA M YONEZU H HAYASHI H TANIGUCHI Y OGAWA H TAMURA S OHTAKE I MOTOJIMA O MORIMOTO S TAKEO M SATO S NINOMIYA A IOKA S NAKAMOTO K UEDE T HOSHI Y
Citation
T. Satow et al., COOLING AND EXCITATION TESTS OF AN INNER VERTICAL COIL FOR THE LARGE HELICAL DEVICE, IEEE transactions on magnetics, 32(4), 1996, pp. 2244-2247
Citations number
8
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
32
Issue
4
Year of publication
1996
Part
1
Pages
2244 - 2247
Database
ISI
SICI code
0018-9464(1996)32:4<2244:CAETOA>2.0.ZU;2-M
Abstract
The Large Helical Device (LHD) under construction at NIFS is a nuclear fusion experimental device consisting of two superconducting helical coils and three pairs of poloidal coils. A pair of inner vertical (IV) coils with a combined stored energy of 161 MJ have been delivered to NIFS. They were the 4 m outside diameter coils wound from cable-in-con duit conductors composed of 486 strands with a copper matrix. We condu cted supercritical helium cooling and excitation tests to confirm the cooling and superconducting characteristics of one of the IV coils bef ore its assembly into the LHD cryostat in 1997. lt has been assembled into the SHe test facility at the Toki site of NIFS, and was cooled do wn and energized to 2.2 kA in February and March 1995. The test facili ty will be repaired in part, and the coil will be tested to confirm th e characteristics at the rated current of 20.8 kA within the year.