Commonwealth Fusion Systems
@commonwealthfusionsystems·10.3K subscribers·72 videos
100 million degrees: Step inside the heart of SPARC
Posted
May 14, 2026
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9:20Now PlayingNow that both halves of our vacuum vessel are here, our team is deep in the work of preparing each half for assembly into our SPARC fusion machine. That means a whole lot of cleaning and measuring, then furnishing each half with diagnostic equipment and plasma-facing components.
The vacuum vessel combines strength, durability, and precision to serve several critical functions — creating an effective vacuum for the plasma inside SPARC, withstanding the extreme temperatures required to sustain a fusion reaction, and shouldering colossal forces exerted by SPARC’s magnets.
Watch the video to learn more about how we learned from — and improved upon — the other 150 tokamaks that have been built around the world, what our team is doing right now to prepare the vacuum vessel for assembly, and much more.
This work paves the way for us to generate net fusion energy with SPARC, a threshold called Q greater than 1 that’s an essential step on the way to commercial fusion energy.
#FusionEnergy #Energy #Physics #Science
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Commonwealth Fusion Systems is the world’s leading and largest private fusion company. The company’s marquee fusion project, SPARC, will generate net energy, paving the way for limitless carbon-free energy through the world's first grid-relevant fusion energy power plant, ARC. The company has raised more than $2 billion in capital since it was founded in 2018.
Follow along as we push forward to delivering fusion energy to power the world’s energy transition.
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