Commonwealth Fusion Systems installs reactor magnet, lands deal with Nvidia

Commonwealth Fusion Systems (CFS) announced the installation of the first of 18 powerful magnets for its Sparc fusion reactor, a demonstration device aimed to be operational by next year. These 24-ton, D-shaped magnets will generate a 20 tesla magnetic field—about 13 times stronger than a typical MRI machine—by being cooled to -253˚C to safely conduct over 30,000 amps of current. The magnets will be arranged in a doughnut shape within a 75-ton stainless steel cryostat, designed to confine and compress plasma heated to over 100 million degrees Celsius. The goal is for the plasma to release more energy than is required to heat and compress it, potentially unlocking nearly limitless clean energy. To optimize Sparc’s performance and accelerate development, CFS is collaborating with Nvidia and Siemens to create a digital twin of the reactor. This digital twin will integrate various simulations and real-time data, allowing the team to run experiments and adjust parameters virtually before applying them