US' stealthy submarine could be built with key tech from Tokamak Energy

The article discusses a collaboration between British fusion energy company Tokamak Energy and U.S. defense contractor General Atomics to develop advanced high-temperature superconducting (HTS) magnet technology for next-generation undersea magnetohydrodynamic (MHD) pumps. These pumps use electromagnetic fields to propel seawater without any rotating mechanical parts, enabling submarines to operate with significantly reduced noise and enhanced stealth. Tokamak Energy is responsible for the simulation, design, and fabrication of the HTS magnets, leveraging its proprietary modeling tools and extensive magnet testing rooted in its fusion energy research. This technology represents a significant advancement in submarine propulsion by addressing previous limitations in magnet and electrode performance. General Atomics will integrate the magnet system with auxiliary components and collaborate with HRL Laboratories, which is developing novel electrode materials under DARPA’s PUMP program. Together, these efforts aim to create a powerful, silent, and efficient MHD drive that could revolutionize undersea military capabilities by enhancing reliability and stealth. The project highlights the