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News & Media

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  • Thermal shield repair | Where are we at?

    Fitting the vacuum vessel sectors like a jacket, lining the inner wall of the cryostat, or covering the sides of vertical coil gravity supports, ITER's thermal [...]

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  • Assembly prep | Reviewing plans for in-vessel installation

    A thorough review of all 'in-vessel' assembly scope was organized by the ITER Machine Assembly Program in early February, with the active participation of senio [...]

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  • Image of the week | Last measurements before campaign

    In order to precisely identify the bevel regions that need to be rectified, metrologists from the SIMANN (SIMIC-Ansaldo) consortium are performing ultra-precise [...]

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  • Neutral Beam Test Facility | After upgrades, SPIDER testbed set to restart

    After a two-year shutdown for upgrades, the SPIDER testbed at the ITER Neutral Beam Test Facility in Padua, Italy, is preparing for commissioning and operation. [...]

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  • ITER Research Plan | Jointly preparing a new blueprint

    As part of work underway to update the ITER Project Baseline, a group of experts nominated by the Members met in February to evaluate the new blueprint for achi [...]

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Of Interest

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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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