TY - JOUR
T1 - Performance of a mechanical bridge joint for 30-kA-class high-Temperature superconducting conductors
AU - Ito, Satoshi
AU - Kawai, Kenji
AU - Seino, Yutaro
AU - Ohinata, Tatsuya
AU - Tanno, Yusuke
AU - Yanagi, Nagato
AU - Terazaki, Yoshiro
AU - Natsume, Kyohei
AU - Hamaguchi, Shinji
AU - Noguchi, Hiroki
AU - Tamura, Hitoshi
AU - Mito, Toshiyuki
AU - Sagara, Akio
AU - Hashizume, Hidetoshi
N1 - Funding Information:
This work was supported in part by aMinistry of Education, Culture, Sports, Science and Technology (MEXT) Grant-in-Aid for Scientific Research (A), 23246159
Publisher Copyright:
© 2013 IEEE.
PY - 2014
Y1 - 2014
N2 - In this report, we propose segment-fabricated hightemperature superconducting (HTS) magnets as candidates for the FFHR-d1 heliotron-Type fusion reactor. The FFHR-d1 requires 100-kA-class superconducting conductors used at 12 T for a pair of helical coils. We fabricated and tested two 30-kA-class GdBCO conductors with bridge-Type mechanical lap joints (mechanical bridge joints). This report details the design of the joint section and the experimental results of those samples, especially, those of their joints. We improved the geometry of the joint region in a second sample, based on our results from the first. The second sample has sufficiently low joint resistance (less than 5 nω), and we could apply 70 kA to it without causing quenching at the joint. Its joint resistance was also acceptable for providing the electric power required to run the cryoplant for the segmented HTS helical coils.
AB - In this report, we propose segment-fabricated hightemperature superconducting (HTS) magnets as candidates for the FFHR-d1 heliotron-Type fusion reactor. The FFHR-d1 requires 100-kA-class superconducting conductors used at 12 T for a pair of helical coils. We fabricated and tested two 30-kA-class GdBCO conductors with bridge-Type mechanical lap joints (mechanical bridge joints). This report details the design of the joint section and the experimental results of those samples, especially, those of their joints. We improved the geometry of the joint region in a second sample, based on our results from the first. The second sample has sufficiently low joint resistance (less than 5 nω), and we could apply 70 kA to it without causing quenching at the joint. Its joint resistance was also acceptable for providing the electric power required to run the cryoplant for the segmented HTS helical coils.
KW - Fusion reactors
KW - High-Temperature superconductors
KW - Power cable connecting
KW - Superconducting magnets
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U2 - 10.1109/TASC.2013.2291157
DO - 10.1109/TASC.2013.2291157
M3 - Article
AN - SCOPUS:84990978893
SN - 1051-8223
VL - 24
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 3
M1 - 6663646
ER -