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Problems will require in-depth examination and ‘time and budget’ to repair October 2022 file photo of the 30-metre-deep pit in the tokamak building being prepared for the Iter machine itself. Courtesy Iter. Defects have been identified in two key First-of-a-kind tokamak components for the International Thermonuclear Experimental Reactor (Iter) nuclear fusion plant under construction at Cadarache in southern France, with the €20bn project facing potential delays while repairs are carried out.

Iter said in a project update that the two components are the vacuum vessel thermal shields and the vacuum vessel sectors.

The issues “demand in-depth examination, creativity in devising corrective actions, and time and budget to repair”, Iter said.

The vacuum vessel thermal shields are actively cooled silver-plated elements, 20 mm thick that contribute to thermally insulating the plant’s superconducting magnet system operating at 4K, or minus 269C.

Date: Thursday, 24 November 2022
Original article: nucnet.org/news/eur20-billion-project-faces-delays-as-defects-found-in-two-key-first-of-a-kind-components-11-3-2022

Plan is to generate first ultra-hot plasma at €20bn facility in 2025 The €20bn project will replicate the reactions that power the sun and is intended to demonstrate fusion power can be generated on a commercial scale. Photo courtesy Iter. The world’s largest nuclear fusion project began its five-year assembly phase on Tuesday in southern France, with the first ultra-hot plasma expected to be generated in late 2025.

The €20bn Iter (International Thermonuclear Experimental Reactor) project will replicate the reactions that power the sun and is intended to demonstrate fusion power can be generated on a commercial scale.

The steel and concrete superstructures nestled in the hills of southern France will house a 23,000-tonne machine, known as a tokamak, capable of creating what is essentially an earthbound star.

Millions of components will be used to assemble the giant reactor, which will weigh 23,000 tonnes and the project is the most complex engineering endeavour in history. Almost 3,000 tonnes of superconducting magnets, some heavier than a jumbo jet, will be connected by 200km of superconducting cables, all kept at -269C by the world’s largest cryogenic plant.

Date: Wednesday, 29 July 2020
Original article: nucnet.org/news/world-s-largest-nuclear-fusion-project-under-assembly-in-france-7-2-2020