期刊
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
卷 25, 期 3, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2014.2363495
关键词
AC magnetic field; high-temperature superconducting (HTS) wires; screening current; shaking coils
资金
- Japan Society for the Promotion of Science [24360110]
- National Institute of Biomedical Imaging and Bioengineering of the National Institutes of Health [R01RR015034]
- National Institute of General Medical Sciences of the National Institutes of Health [R01RR015034]
Two types of shaking coils are focused on reducing screening currents induced in solenoid coils wound with high-temperature superconducting (HTS) tapes. One is a pair of copper shaking coils coaxially located inside and outside the HTS coil to apply an ac magnetic field in the axial direction. The other is an HTS shaking coil with notch located only outside the HTS coil to minimize the radial components of local ac fields applied to windings of the HTS coil as small as possible. It is found that the copper shaking coils yield the allowable amount of power dissipation in liquid helium. The effectiveness of the HTS shaking coil to reduce screening-current-induced fields generated by another magnetized HTS coil is also experimentally validated in liquid nitrogen using a commercially available coated conductor with narrow width.
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