Summary
This paper describes the fabrication and performance characterisation of a 6-around-1 flexible cable design using high-temperature superconducting STAR® wires, developed for high-field accelerator and fusion magnet applications requiring dipole fields above 20 T. The 1.5 m cable sample demonstrated a critical current of 1448 A at 77 K whilst retaining at least 77% of the theoretical maximum from individual wires, with stable performance maintained after bending to a 30 mm radius. The authors propose this transposed cable architecture as a practical route toward next-generation superconducting conductors for large-scale magnet systems.
Key measures
Critical current (1448 A at 77 K), critical current retention after bending (≥77% of individual wire capacity), n-value (~4.5), electrical termination resistance (61 nΩ at 77 K), cable diameter (5.7 mm), pitch length (52 mm), bend radius (30 mm)
Outcomes reported
The study reports the development and characterisation of a 6-around-1 cable configuration using high-temperature superconducting STAR® wires for high-field magnet applications. Critical current, bending performance, and electrical resistance of the cable were measured at 77 K.
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