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Originally filmed on site at ITER in May 2025, this video has been updated with new footage of the tokamak pit from December (1:14–2:12). A third of the ITER plasma chamber is now in place, and the installation of a fourth sector is imminent. Fly above, and into, the modules of the ITER vacuum vessel, or—if you haven't already seen it—watch the rest of the video to see how the ITER machine and plant are coming together on a 180-hectare site in southern France.