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Latest ITER Newsline

  • A world in itself

    From a height of some 50 metres, you have the entire ITER worksite at your feet. The long rectangle of the Diagnostics Building stands out in the centre, with [...]

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  • US completes toroidal field deliveries for ITER

    The US Domestic Agency achieved a major milestone in February by completing the delivery of all US-supplied toroidal field conductor to the European toroidal fi [...]

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  • Thin diagnostic coils to be fitted into giant magnets

    Last week was marked by the first delivery of diagnostic components—Continuous External Rogowski (CER) coils—from the European Domestic Agency to the ITER Organ [...]

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  • Addressing the challenge of plasma disruptions

    Plasma disruptions are fast events in tokamak plasmas that lead to the complete loss of the thermal and magnetic energy stored in the plasma. The plasma control [...]

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  • Blending (almost) seamlessly into the landscape

    Located in the foothills of the French Pre-Alps, the ITER installation blends almost seamlessly into the landscape. The architects' choice ofmirror-like steel c [...]

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Of Interest

See archived articles

An anchor for the backbone

-R.A.

While concrete pouring was underway last Wednesday on the last segment of the Tokamak Complex basemat, laser measurements were still being performed on a large steel ring, deeply anchored at the very centre of the plot.

Laser measurements on the circular steel ring were still being performed while concrete pouring was underway last Wednesday. (Click to view larger version...)
Laser measurements on the circular steel ring were still being performed while concrete pouring was underway last Wednesday.
Topped by a temporary, blue steel structure designed to prevent deformation, the steel ring is part of the support system for the huge inner support column—the steel backbone that, along will seven radial beams, will stabilize the vacuum vessel sectors during the first stages of machine assembly.

Because it was vitally important that the circular ring and its four associated inserted plates remain perfectly positioned, the temporary steel structure guaranteed the ring's rigidity during the pour and regular laser surveys ensured that no deviation had occurred from the original position.

The inner support column will form the axis and backbone of the Tokamak during the first phase of machine assembly. (Click to view larger version...)
The inner support column will form the axis and backbone of the Tokamak during the first phase of machine assembly.
During first-phase Tokamak assembly operations, the inner support column will form the axis of the Tokamak. Once the nine sectors of the vacuum vessel are assembled and welded, the column will be removed from the machine and the central solenoid will take its place.

Last Wednesday, as ITER celebrated the "Final Pour" of the Tokamak Complex basemat, the first element of an assembly tool was in place, ready for an operation that should begin in 2017.


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