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ITER's Massive Vacuum Vessel Sector 9 Ready for Assembly

2/23/2026

37 6 Full Breakdown

Summary

Story summary

Sector 9 of the ITER Vacuum Vessel has been completed and will be transported to the ITER site in Fos-sur-Mer, France, for assembly.
The vessel measures 19.4 meters across, weighs about 5,200 tonnes, and is built from stainless steel to create a high-vacuum environment for plasma, using superconducting magnets for safety.
Sector 9 faced defects requiring invasive repairs, but the teams adapted quickly to maintain progress.

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Story summary

Sector 9 of the ITER Vacuum Vessel has been completed and will be transported to the ITER site in Fos-sur-Mer, France, for assembly.
The vessel measures 19.4 meters across, weighs about 5,200 tonnes, and is built from stainless steel to create a high-vacuum environment for plasma, using superconducting magnets for safety.
Sector 9 faced defects requiring invasive repairs, but the teams adapted quickly to maintain progress.