Subscribe options

Select your newsletters:

Please enter your email address:

@

Your email address will only be used for the purpose of sending you the ITER Organization publication(s) that you have requested. ITER Organization will not transfer your email address or other personal data to any other party or use it for commercial purposes.

If you change your mind, you can easily unsubscribe by clicking the unsubscribe option at the bottom of an email you've received from ITER Organization.

For more information, see our Privacy policy.

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 [...]

    Read more

  • 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 [...]

    Read more

  • 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 [...]

    Read more

  • 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 [...]

    Read more

  • 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 [...]

    Read more

Of Interest

See archived entries

Conductors for 6 out of 18 toroidal field coils manufactured

From the 330 tonnes of Nb3Sn strands that have been manufactured, conductors for six toroidal field coils have been produced. (Click to view larger version...)
From the 330 tonnes of Nb3Sn strands that have been manufactured, conductors for six toroidal field coils have been produced.
The production of superconducting cables for ITER's large and powerful toroidal field coils is making remarkable progress: as of today, 330 tonnes of strands made out of Nb3Sn, a special alloy made of niobium and tin, have been produced in factories in China, Europe, Japan, Korea, Russia and the United States. In the pre-ITER world, global production was 15 tonnes a year. "The current production status represents 75 percent of the total toroidal field strands required for ITER," reports Arnaud Devred, Section Leader for Superconducting Systems. "Out of these strands, conductors for 6 out of the machine's 18 toroidal field coils have been produced."

The 18 toroidal field coils will produce a magnetic field around the ITER torus helping to confine and control the plasma inside. The coils are designed to achieve operation at magnetic fields up to 13 Tesla. They are made of cable-in-conduit superconductors in which a bundle of superconducting strands is cabled together and contained in a structural jacket. Unit lengths of theses cables—measuring 760 metres or 415 metres depending on their position within the coil—are then spooled into a D-shaped double spiral called a "double pancake," giving the structure the characteristic shape of ITER's toroidal field coils.

As of today, a total of thirty 760-metre unit lengths and thirteen 415-metre unit lengths have been manufactured by the procuring agencies in Japan, Korea, Russia and Europe, adding up to the material required for 6 of the 18 toroidal field coils.

"Quality tests are currently underway," says Devred, "to confirm that these unit lengths can be accepted for coil winding."


return to the latest published articles