To achieve such a structure that is free from effect of bubble generated from a superconducting coil without enlarging a cryogenic container for accommodating the superconducting coil, even if a high voltage bushing is mounted thereon.
A very low temperature bushing device includes: the cryogenic container 1; the super conducting coil 3 accommodated in the cryogenic container 1 together with liquid nitrogen 2; and a pair of very low temperature bushings 6a, 6b which are coupled to be disposed in the cryogenic container 1 and which electrically connect the superconducting coil 3 from a low temperature portion in the cryogenic container 1 to a normal temperature portion outside the cryogenic container 1, thereby electrically insulating the ground. The very low temperature bushing device has such a configuration that: bushing pockets 4a, 4b are disposed by allowing side surfaces at different positions of the cryogenic container 1 to be coupled by each of connection tubes 5a, 5b; the very low temperature bushings are accommodated in the bushing pockets; and each connection portion of the very low temperature bushings to the superconducting coil 3 is disposed so that an angle which an upper outermost layer end of the superconducting coil 3 and a horizontal plane make is in response to a position of a direction lower than 60°.
HOSHINA KOICHI
YAZAWA TAKASHI
TANOMURA KENICHI
IWANADE NAOKAZU
SUZUKI KOJI
UEHARA KYOICHI
ONO MICHITAKA
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Katsumura Hiro
Shoji Kawai
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen
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