TY - JOUR
T1 - A 1.8 K current feedthrough using YBCO bulk conductor for supplying 20 kA
AU - Maehata, K.
AU - Ishibashi, K.
AU - Shintomi, T.
AU - Iwamoto, A.
AU - Maekawa, R.
AU - Mito, T.
N1 - Funding Information:
The authors would like to thank Fuji Electric Co., Ltd for their collaboration in the development of the 1.8 K current feedthrough. We also wish to express our thanks to Nippon Steel Co. for their work in developing the large-sized YBCO bulk conductors. This work was performed with the support and under the auspices of the NIFS LHD Project Research Collaboration.
PY - 2005/10/1
Y1 - 2005/10/1
N2 - Rectangle-shaped YBCO bulk conductors 20 mm wide, 140 mm long and 10 mm thick were manufactured from square-pillar-shaped YBCO bulk materials for supplying a 20 kA current into a pressurized superfluid cooling region at a temperature of 1.8 K. An assembled 1.8 K current feedthrough was mounted in the λ-plate of a pressurized superfluid cooling cryostat. Current-feed experiments into the 1.8 K region were carried out by operating the 20 kA current feedthrough. In the experiments, the transport current was kept at 20 kA for longer than 1200 s. Contact resistance and Joule heat generation in the joint region between the YBCO bulk conductors and the copper electrode were 1.45 nΩ and 0.72 W, respectively, in the 20 kA operation.
AB - Rectangle-shaped YBCO bulk conductors 20 mm wide, 140 mm long and 10 mm thick were manufactured from square-pillar-shaped YBCO bulk materials for supplying a 20 kA current into a pressurized superfluid cooling region at a temperature of 1.8 K. An assembled 1.8 K current feedthrough was mounted in the λ-plate of a pressurized superfluid cooling cryostat. Current-feed experiments into the 1.8 K region were carried out by operating the 20 kA current feedthrough. In the experiments, the transport current was kept at 20 kA for longer than 1200 s. Contact resistance and Joule heat generation in the joint region between the YBCO bulk conductors and the copper electrode were 1.45 nΩ and 0.72 W, respectively, in the 20 kA operation.
UR - https://www.scopus.com/pages/publications/25644437067
UR - https://www.scopus.com/pages/publications/25644437067#tab=citedBy
U2 - 10.1016/j.physc.2005.02.079
DO - 10.1016/j.physc.2005.02.079
M3 - Conference article
AN - SCOPUS:25644437067
SN - 0921-4534
VL - 426-431
SP - 770
EP - 776
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - I
T2 - Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity
Y2 - 23 November 2004 through 25 November 2004
ER -