TY - JOUR
T1 - Application of high temperature superconductor in National Institute for Fusion Science
AU - Mito, T.
AU - Chikaraishi, H.
AU - Hamaguchi, S.
AU - Heller, R.
AU - Imagawa, S.
AU - Ishibashi, K.
AU - Iwakuma, M.
AU - Iwamoto, A.
AU - Maehata, K.
AU - Maekawa, R.
AU - Morikawa, J.
AU - Motojima, O.
AU - Nishimura, A.
AU - Ogawa, Y.
AU - Satow, T.
AU - Shintomi, T.
AU - Tachikawa, K.
AU - Takahata, K.
AU - Tamura, H.
AU - Yamada, S.
AU - Yamada, Y.
AU - Yanagi, N.
PY - 2002/3
Y1 - 2002/3
N2 - In the National Institute for Fusion Science (NIFS), the following three research items are being advanced as application of high temperature superconductor (HTS) to an experimental fusion plasma system, through collaboration with universities and laboratories. The first is an application of HTS in the large current feedthrough to a superconducting coil cooled with superfluid helium in order to reconcile low heat load and stable large current transport capability. A 20 kA current feedthrough from 4.4 K to 1.8 K has been being developed using YBCO bulk superconductors manufactured by the QMG process. The second is the development of a 30 kA HTS current lead. The Bi2212 bulk material fabricated by the diffusion process is considered as a candidate material for HTS current leads. The third is the development of the superconducting magnetic-levitation coil for Mini-RT wound with Bi2223 tape conductor. A magnetic-levitation coil operated in persistent-current mode has to levitate for 8 hours without a feed of refrigerant. Present status of these HTS application researches in NIFS is reported.
AB - In the National Institute for Fusion Science (NIFS), the following three research items are being advanced as application of high temperature superconductor (HTS) to an experimental fusion plasma system, through collaboration with universities and laboratories. The first is an application of HTS in the large current feedthrough to a superconducting coil cooled with superfluid helium in order to reconcile low heat load and stable large current transport capability. A 20 kA current feedthrough from 4.4 K to 1.8 K has been being developed using YBCO bulk superconductors manufactured by the QMG process. The second is the development of a 30 kA HTS current lead. The Bi2212 bulk material fabricated by the diffusion process is considered as a candidate material for HTS current leads. The third is the development of the superconducting magnetic-levitation coil for Mini-RT wound with Bi2223 tape conductor. A magnetic-levitation coil operated in persistent-current mode has to levitate for 8 hours without a feed of refrigerant. Present status of these HTS application researches in NIFS is reported.
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U2 - 10.1109/TASC.2002.1018476
DO - 10.1109/TASC.2002.1018476
M3 - Conference article
AN - SCOPUS:0036509946
SN - 1051-8223
VL - 12
SP - 606
EP - 610
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 1
T2 - 17th Annual Conference on Magnet Technology
Y2 - 24 September 2001 through 28 September 2001
ER -