Enable Recite

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

  • 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 [...]

    Read more

  • 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 [...]

    Read more

  • 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 [...]

    Read more

  • 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 [...]

    Read more

  • 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.  [...]

    Read more

Of Interest

See archived entries

Assembly

Long-term coil park

Manufactured in China under a European contract, poloidal field coil #6 (PF6) was the first magnet to be installed in the assembly pit in late April 2021. Sailing the south China Sea, the Indian Ocean, the Red Sea and the Suez Canal into the Mediterranean, it travelled more than 10,000 kilometres to reach the ITER construction site. For its successor in the assembly sequence, poloidal field coil #5 (PF5), the trip was much shorter: just a few hundred metres from the European poloidal field coil winding facility on site to the Assembly Hall and into the assembly pit. With the installation of this second ring-shaped coil on 16 September, ITER has achieved yet another major assembly milestone.

The first poloidal field coil to be produced by the European Domestic Agency on site at ITER—PF5—was positioned at the bottom of the Tokamak pit on 16 September. (Click to view larger version...)
The first poloidal field coil to be produced by the European Domestic Agency on site at ITER—PF5—was positioned at the bottom of the Tokamak pit on 16 September.
PF5 was the first coil to leave the European production line in April of this year. From the start of coil winding activities in September 2017, to resin impregnation, final assembly, and cold testing, its realization was a meticulous, stage-by-stage process that required the expertise of a dozen companies and more than 150 people.

On Monday 26 July, the coil was moved out of temporary storage and into the Assembly Hall. A few weeks of preparation and rigging followed, and by 15 September it was ready for installation.

Poloidal field coil #5 is the fifth major component to be installed in the Tokamak pit after the cryostat base, the cryostat lower cylinder, the lower cryostat thermal shield, and poloidal field coil #6. (Click to view larger version...)
Poloidal field coil #5 is the fifth major component to be installed in the Tokamak pit after the cryostat base, the cryostat lower cylinder, the lower cryostat thermal shield, and poloidal field coil #6.
At 17 metres in diameter and weighing close to 350 tonnes, PF5 is neither the largest, or the heaviest, of the machine's six ring-shaped coils. It is nonetheless an impressive component, whose planarity had to be maintained and guaranteed throughout the lifting and installation sequence.

Once lowered into the pit, the coil had to fit precisely on its supports, just above magnet feeder components and a few centimetres from the surface of the lower cryostat thermal shield. Early in the afternoon of 16 September, PF5 was its final "parking position," with all position requirements within tolerance.

Like its neighbour PF6, PF5 will remain in a temporary position for a few years. When all vacuum vessel sectors are in place, both coils will be raised to their permanent position (a move of approximately 2 metres for PF6 and 1.5 metres for PF5).

Click here to view a video of PF5 installation.



return to the latest published articles