Design consideration and optimization procedure for a no-insulation multi-width REBCO magnet

作者：Kim Y G; Hahn S; Kim K L; Yang D G; Lee H G^*

来源：Current Applied Physics, 2015, 15(10): 1134-1138.

DOI：10.1016/j.cap.2015.06.024

• CCD-factor
• HTS magnet
• Multi-width
• No-insulation
• Optimization

This paper reports the optimization procedure for a no-insulation (NI) multi-width (MW) REBCO magnet, which enables the fabrication of a highly compact and competitively priced superconducting magnet. In order to identify the design considerations for the NI-MW magnet, the electromagnetic performances of 3 different magnets were investigated using the finite element method (FEM). Based on the comparison results, it was verified that the critical current distribution-factor (CCD-factor), which is the ratio of the highest pancake critical current (I-c) to the lowest pancake I-c within the magnet, should be close to 1.00 for the MW configuration to be most effective. In the optimized MW magnet, the center B-z (7.54 T) remarkably exhibited an similar to 51% increase compared to the 4-mm single width magnet (5.00 T). Furthermore, the CCD-factor of the optimized MW magnet was 1.04, which is quite close to 1.00, sufficiently demonstrating the validity of the optimization process and result.

• 出版日期2015-10