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Reduction of Screening Current-Induced Field in a REBCO Coil Wound by Solder-Square-Stacked Wire
- Source :
- IEEE Transactions on Applied Superconductivity. 29:1-5
- Publication Year :
- 2019
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2019.
-
Abstract
- REBa 2 Ca 3 O 7-x (REBCO, RE = rare earth) coated conductors are promising conductors for high magnetic field magnet applications. For REBCO magnets, the tape structures and their superconductive characteristic cause a persistent screening current flowing in the tapes. Due to the existence of the screening current induced field (SCIF), the overall magnetic field becomes unstable and shows a temporal drift. This problem limits the application of REBCO in high-precision magnets, such as MRI and NMR. In this paper, the soldered-stacked-square (3S) REBCO wire is proposed to reduce SCIF. To confirm the reduction effect, a solenoid coil and a benchmark coil were wound by the 3S wire and the commercial 5-mm-wide REBCO tape, respectively. The screening current distributions of 3S wire and 5-mm tape were analyzed. Then, the temporal drift of the overall magnetic field and SCIF hysteresis loop were both experimentally measured for comparison. The test results showed that the 3S wire can significantly reduce the negative effects of SCIF.
- Subjects :
- Materials science
Field (physics)
Condensed Matter Physics
01 natural sciences
Electronic, Optical and Magnetic Materials
Magnetic field
Electromagnetic coil
Magnet
Soldering
0103 physical sciences
Electrical and Electronic Engineering
Current (fluid)
Composite material
010306 general physics
Reduction (mathematics)
Electrical conductor
Subjects
Details
- ISSN :
- 23787074 and 10518223
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Applied Superconductivity
- Accession number :
- edsair.doi...........a2c8b60e3d148508c5541547b54aa916