High-Temperature Superconducting Central Solenoid Coil Successfully Developed, with All REBCO Tapes Supplied by Shanghai Superconductor
2026-06-27
The full-size high-temperature superconducting (HTS) central solenoid (CS) coil, developed by ASIPP (Institute of Plasma Physics Chinese Academy of Sciences), successfully passed its full-parameter testing. This breakthrough proves the engineering scalability of HTS technology for extreme fusion conditions, powered exclusively by REBCO tapes from Shanghai Superconductor (SST). Dr Zhiyong Hong, Vice Chairman of SST, was invited to witness the magnet's full-parameter operation ceremony in person.
Fusion-grade central solenoid magnets face severe operational challenges: ultra-high currents, intense magnetic fields, and fast field ramping. Meeting these demands requires HTS tapes with both exceptional in-field current-carrying capacity and outstanding mechanical robustness. To address this, SST entered into a three-year close collaboration with ASIPP to advance the CS coil development. The effort achieved its first validation in May 2024, when a CICC sample cable incorporating SST tapes successfully completed high-current, high-field tests at Switzerland's SULTAN facility. Following two additional years of process refinement and scaled manufacturing, the program reached its crowning achievement in June 2026—the full-parameter testing of the first full-size HTS CS coil.
This milestone validates not only the superior in-field performance and mechanical durability of SST's HTS tapes, but also the company's proven capability for consistent quality and volume production to meet the demands of full-scale fusion magnet applications.
