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Latest ITER Newsline

  • Remembering Bernard Bigot, ITER Director-General 2015-2022

    On the ITER site, the machinery of construction was humming just like on any weekday. Workers were concentrating on their tasks, laying rebar for new buildings [...]

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  • Tokamak assembly | Preparing for the Big Lift

    The distance was short but the challenge daunting: on Thursday last week, the first section of the plasma chamber was lifted 50 centimetres above its suppor [...]

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  • Image of the week | 13th toroidal field coil arrives from Europe

    The toroidal field coil procurement effort has been one of the longest of the ITER program, initiated by Procurement Arrangements signed in 2007 and 2008. Manuf [...]

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  • Diagnostics | Final Procurement Arrangement signed

    ITER Diagnostics reached an important milestone in December 2021 when it concluded the last Procurement Arrangement of the diagnostics program. After signing a [...]

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  • On site | A quick visit to the Control Building

    Work is progressing on the ITER Control Building, ergonomically designed for the 60 to 80 operators, engineers and researchers who will call it home.  [...]

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Of Interest

See archived entries

12 minutes to understand TF coil manufacturing

Each toroidal field coil is made up of a winding pack (seven double pancakes plus radial plate) and a protective shell of stainless steel. At the La Spezia winding line, 750-metre lengths of toroidal field conductor will be bent into a D-shaped double spiral trajectory, and their length controlled to an accuracy of 500th of a millimetre per metre. (Click to view larger version...)
Each toroidal field coil is made up of a winding pack (seven double pancakes plus radial plate) and a protective shell of stainless steel. At the La Spezia winding line, 750-metre lengths of toroidal field conductor will be bent into a D-shaped double spiral trajectory, and their length controlled to an accuracy of 500th of a millimetre per metre.
The magnets responsible for confining the ITER plasma—the eighteen D-shaped toroidal field coils—will form an impressive superstructure within the ITER machine: at approximately 6,000 tonnes (coils plus cases), they will represent over one-fourth of the Tokamak's total weight.

In two new videos produced by the European Domestic Agency, we are taken inside a vast manufacturing facility in La Spezia, Italy, where preparations are under way for the fabrication of ten toroidal field coils (nine plus one spare) that are part of the European contribution to ITER.

From winding through heat treatment and on to insertion into radial plates, the toroidal field coil manufacturing process is complex and exacting, requiring unprecedented levels of tolerances and performance. In the videos, experts from the ASG consortium* and Europe speak of the technical challenges, the specialized tooling, and the qualification work underway.

You can see the two 6-minute videos on F4E's website.

*ASG consortium: Iberdrola Ingeniería y Construcción SAU, ASG Superconductors SpA and Elytt Energy SL



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