Recently, the all-superconducting magnet jointly developed by the Institute of Energy, Hefei Comprehensive National Science Center (hereinafter “the Institute”), the Institute of Plasma Physics of the Hefei Institutes of Physical Science, Chinese Academy of Sciences, and other research institutions and universities, achieved a central steady-state magnetic field of 35.1 Tesla, setting a new world record.
The magnet adopts a hybrid design of “high-temperature superconducting insert + low-temperature superconducting magnet,” with the two components precisely nested coaxially to form a stable composite structure. The research team employed multi-physics collaborative optimization methods and high-stress control techniques, effectively solving challenges such as stress concentration under low-temperature and high-field conditions, and significantly improving the mechanical stability and electromagnetic performance of the magnet under extreme operating conditions. In the experiment, the magnet successfully reached a magnetic field of 35.1 Tesla and operated stably for 30 minutes, fully verifying the reliability of the technical solution and providing a robust platform for conducting various sample experiments under 35.1 Tesla all-superconducting magnet conditions.
This achievement represents a key technological breakthrough in the international field of ultra-high-field all-superconducting steady-state magnets and realizes 100% independent controllability of critical materials, processes, and fabrication. The research not only effectively drives technological upgrading of the domestic high-temperature superconducting materials industry, but also provides critical technical support for industrial applications in multiple fields, including nuclear magnetic resonance imaging, aerospace electromagnetic propulsion, superconducting induction heating, superconducting magnetic levitation, and high-efficiency power transmission.
Figure 1 Test site of the steady-state all-superconducting magnet
Figure 2 Test curve of the all-superconducting magnet