Energy Singularity announced the successful development of a conduction-cooled high-temperature superconducting (HTS) magnet, which reached a peak field of 20.8 Tesla and operated stably for 150 minutes before being safely ramped down.
The magnet consists of 20 single pancakes, with an outer diameter of 120 mm and a winding diameter of 30 mm per pancake. It features a no-insulation (NI) structure and operates using a conduction-cooling method. Operating at 10 K, the magnet maintained a temperature rise below 5 K throughout the entire current ramp-up cycle. This technology will be integrated into Energy Singularity’s commercial-grade material property measurement platforms, including integrated physical property measurement systems and critical current angle-dependent testing systems.
As a leading developer of HTS fusion devices, Energy Singularity requires extensive testing of HTS materials for magnets up to 25 Tesla. While the company tests thousands of HTS tapes annually, existing commercially available integrated physical property measurement systems only provide test fields of 9-14 Tesla, with a maximum not exceeding 16 Tesla. Consequently, the company has had to rely on simulation and calculation to estimate the performance of superconducting materials at 20 Tesla or higher, introducing additional risk into the magnet development process.
Globally, only a few high-field laboratories affiliated with large-scale scientific facilities can provide test environments exceeding 20 Tesla. Such testing is extremely slow and costly, making it difficult to apply to batch testing of superconducting material properties. To solve this bottleneck, Energy Singularity is developing its own 20-Tesla-class material testing platform. By matching the cost and speed of existing commercial systems while providing access to ultra-high fields, the platform enables efficient batch testing. The centerpiece of this solution is the newly developed 20-Tesla-class conduction-cooled magnet technology.