No-insulation multi-width winding technique for high temperature superconducting magnet.

Area of Science:

• Superconducting magnet technology
• Materials science
• Electrical engineering

Background:

• High-temperature superconductor (HTS) magnets are crucial for advanced applications.
• Conventional HTS magnets face challenges with anisotropy and self-protection.
• The No-Insulation (NI) technique offers self-protection, but performance can be limited.

Purpose of the Study:

• To introduce and evaluate a novel No-Insulation, Multi-Width (NI-MW) winding technique for HTS magnets.
• To demonstrate the self-protecting capabilities of the NI-MW technique.
• To showcase the enhanced field performance achievable with the NI-MW method.

Main Methods:

• Fabrication of an HTS magnet using the NI-MW winding technique.
• Utilizing double-pancake (DP) coils with tapes of varying widths.
• Assigning the widest tape to the top/bottom sections and the narrowest to the midplane.
• Experimental testing of the fabricated NI-MW HTS magnet.

Main Results:

• The NI-MW HTS magnet demonstrated effective self-protection.
• The technique successfully minimized detrimental anisotropy in current-carrying capacity.
• Enhanced magnetic field performance was achieved compared to conventional methods.
• Unique features of the NI-MW technique were experimentally validated.

Conclusions:

• The NI-MW winding technique offers a viable solution for self-protecting HTS magnets.
• This method significantly improves the current-carrying capacity and field performance of HTS magnets.
• The NI-MW technique provides superior performance unattainable with conventional winding methods.