Abstract
This paper describes design and fabrication of a hybrid high temperature superconducting (HTS) magnet for a 150 kJ superconducting magnetic energy system. The hybrid HTS magnet, which employs both BSCCO taps and YBCO taps, is composed of 18 double pancake coils (DPC). Six DPC made of BSCCO are respectively installed on the top and bottom with an inner diameter of 240 mm, an outer diameter of 396 mm, and height of 11.5 mm. Six YBCO coils are mounted in the middle of the magnet with the inner and outer diameters of 264, 396 mm and height of 12.1 mm. Copper plates with thickness of 1 mm are arranged between DPC for the cooling of the heat, and epoxy resin plates with thickness of 0.2 mm are arranged between coil and copper plate for the insulation. The inductance of the magnet is about 11.06 H and the resistance is 169.5 Ω at the room temperature. In order to evaluation the performance of the hybrid magnet, each solidified DPC and the assembled magnet were tested in a bath of liquid nitrogen at 77 K. The resistances of 17 joints were also measured and evaluated by the standard four-probe method.
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Acknowledgments
The authors would like to acknowledge Prof. Jinglin Chen, Prof. Jingdong Li, Prof. Yuejin Tang and Dr. Ying Xu for helpful suggestions and discussions. This work was supported in part by the National Natural Science Foundation of China (grant No. 51177163) and National Magnetic Confinement Fusion Science Program (grant No. 2011GB112004).
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Han, P., Liu, HJ., Wu, Y. et al. Design and Fabrication of a Hybrid HTS Magnet for 150 kJ SMES. J Fusion Energ 33, 759–764 (2014). https://doi.org/10.1007/s10894-014-9744-z
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DOI: https://doi.org/10.1007/s10894-014-9744-z