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Bill Gates-backed Commonwealth Fusion Systems hits key reactor construction milestone
Commonwealth Fusion Systems marked a major milestone Tuesday morning, announcing the installation of a key component of its Sparc demonstration reactor.
The new part is a 24-foot wide, 75-ton stainless steel circle that forms the foundation of the tokamak, the doughnut-shaped heart of a fusion reactor that CFS hopes will be the first of its kind to generate more power than it consumes. CFS is one of many startups that have emerged in recent years to pursue fusion power, which promises to deliver gigawatts of pollution free electricity from a hydrogen fuel derived from seawater. The CFS team then moved the cryostat base to the tokamak hall, where precisely placed bolts protruded from the concrete foundation awaiting the stainless steel disk.
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