Extreme vigilance, successful installation

Watch as one-ninth of the ITER vacuum vessel is lifted out of tooling and lowered into the machine assembly pit. The operation—which took place over two days in January—tested, once again, the accuracy of the metrology system and the navigation skills of the assembly team (read more here). Vacuum vessel sector module #8 joins modules #5, #6 and #7 to form nearly one-half of the ITER plasma chamber. Three more of these incredible "lifts" are expected this year.

Watch the video on the ITER YouTube channel.

Fusion for Energy—the European Union organization managing Europe’s contribution to ITER—is organizing an Energy Summer School at its headquarters in Barcelona, Spain, from 15 to 19 June 2026. 

The curriculum covers a broad spectrum of topics, beginning with energy fundamentals and the operation of electrical grids, and extending to the study of diverse energy sources, their environmental impact, and the geopolitics of energy. The objective is to equip participants with the knowledge and the analytical tools necessary to understand the complexity of today's energy challenges, while preparing them to contribute effectively to the sustainable transition of our societies.

The summer school is designed for European Union citizens attending PhD or Master's courses in engineering, natural sciences, economy or political sciences. Whether you hope to work in engineering, science, finance, procurement, policymaking or communication, the program will provide insight into the technical, environmental, and regulatory dimensions that drive investment decisions, supply strategies, and political agendas.  

More information about applying to the program can be downloaded here. Applications close on 31 March.

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.

See the updated video on the ITER YouTube channel.

The final design review has been completed and manufacturing of Europe’s first ITER gyrotrons is set to begin. This marks another key milestone for the Electron Cyclotron Heating (ECH) system that will be used to heat the ITER plasma to more than 100 million degrees Celsius and sustain fusion reactions.

Gyrotrons essentially convert electricity into high-frequency microwaves that will transfer energy to plasma electrons once injected into the tokamak. Initially, there were plans for 24 gyrotrons at ITER and the European Domestic Agency, Fusion for Energy, was responsible for supplying six of them through a contract with Thales. However, when the new baseline was introduced in 2024, the number of gyrotrons was increased to 48 at the Start of Research Operation phase, with another 24 scheduled to be added once deuterium-tritium testing begins. With the wider use of gyrotrons, Europe will produce more units.

Learn more about the preparations for gyrotron manufacturing here.

(Pictured is work on the gyrotron prototype done in 2022.)