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News & Media

Latest ITER Newsline

  • Summer postcards from the ITER worksite

    The latest harvest of ITER construction photos may be taken from the same point—the tallest crane on site—but there is always an abundance of new detail to be g [...]

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  • The ring fortress

    ITER'ssteel-and-concretebioshield has become the definingfeature of Tokamak Complex construction. Twolevels only remain to be poured (out of six). It is a 'rin [...]

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  • The wave factory

    A year ago, work was just beginning on the steel reinforcement for the building's foundation slab. The Radio Frequency Heating Building is now nearing the last [...]

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  • It's all happening inside

    Since the giant poster was added to the Assembly Hall's completed exterior in June 2016 the building has lookedfrom afar like a finished project. Butinside, tea [...]

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  • Along skid row

    They look like perfectly aligned emergency housing units. But of course they're not: the 18 concrete structures in the ITER cryoplant are massive pads that will [...]

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Of Interest

See archived articles

Ready to hand over to industry



This model of an ITER cryopump that the vacuum team appears to be hauling out of Building 525 represents many years of development, which were recently finalized at ITER. 

The "built to print" design of this eight-tonne component (shown here at 2:3 scale) requires no less than 250 technical drawings to enable it to be manufactured to the precise standards required for the ITER Tokamak.

Detailing the design down to the smallest bolt was essential for this high-performance component to fulfil its demanding functions on ITER. The vacuum team is celebrating its completion.
Tender actions by both ITER Organization and the European Domestic Agency, Fusion For Energy, have been issued for the manufacturing of the first full-size cryopumps, which will be assembled by industry and tested at the Karlsruhe Institute of Technology in Germany.

"Cryopumps are among the most complex of ITER components," say both Vacuum Section Head Robert Pearce and Matthias Dremel, who led the final design phase. "These pumps are unique. They contain the world's largest all-metal high vacuum valve and operate with 4.5 K (minus 268.5 °C) cryogens in the harsh environment of the heart of the ITER machine."

After creating a high vacuum inside the Tokamak chamber, six torus cryopumps will have the responsibility of taking impurities and the helium ash out of the plasma, thus enabling ITER to sustain its full performance.

Two more cryopumps will be installed on the cryostat to maintain the low pressure required for the operation of the magnets.


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