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News & Media

Latest ITER Newsline

  • Top management | ITER Council appoints new Director-General

    Convening in an extraordinary session in Paris, the ITER Council has appointed Pietro Barabaschi as the next Director-General of the ITER Organization. Mr Barab [...]

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  • On site | Open Doors for ITER families

    In a first at ITER, the gates of the monumental worksite opened on Saturday 17 September for a family-only Open Doors Day event, reserved for the families of st [...]

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  • Manufacturing | Russia ships four gyrotron sets

    Twenty-four electromagnetic wave generators called gyrotrons are at the heart of electron cyclotron resonance heating—the system on ITER that will ini [...]

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  • Fusion world | Science to resume at Wendelstein 7-X

    Improved equipment on Wendelstein 7-X will permit the stellarator device to achieve new scientific heights in a campaign planned to begin this autumn. Science a [...]

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  • ITER International School | On operation scenarios and control

    The 11th ITER International School concluded successfully in San Diego, USA, on 29 July after five days of lectures and discussions on the development of tokama [...]

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Of Interest

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Image of the week

Adjusting a correction coil's position

Compared to the massive ITER magnets that weigh up to 400 tonnes, the machine's correction coils are quite lightweight: at 4.5 tonnes, they are the smallest of the superconducting magnetic system. Distributed around the machine in three sets of six (top, bottom and side), they are tasked with reducing the minute deviations of the magnetic field caused by imperfections in the position and geometry of the toroidal and poloidal field coils. Based on a build-to-print design developed by the ITER Organization, they are the procurement responsibility of the Chinese Domestic Agency and its contractor ASIPP (Institute of Plasma Physics, Chinese Academy of Sciences).

Workers from the CNPE Consortium are seen here carrying out metrology measurements and adjusting the kidney-shaped coil's position on its yellow temporary supports. (Click to view larger version...)
Workers from the CNPE Consortium are seen here carrying out metrology measurements and adjusting the kidney-shaped coil's position on its yellow temporary supports.
The first bottom correction coil (BCC/4) was installed in the assembly pit on 21 October 2021, followed five days later by BCC/5. The correction coils must be precisely positioned in a very restricted space between poloidal field coils #5 and #6, lower magnet feeders, and staging platforms. Depending on the coil, the "room to move" is in the range of 15 to 25 mm.

Facing similar constraints, a third kidney-shaped bottom correction coil (BCC/6) was successfully installed on 5 January. Workers from the CNPE Consortium (Tokamak assembly contractor TAC/1) are seen here carrying out metrology measurements and adjusting the coil's position on its yellow temporary supports (final positioning will be possible only when all vacuum vessel modules are in place). A fourth bottom correction coil (BCC/3) is scheduled for installation this week, while the full set of six should be in place by the end of February.



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