Subscribe options

Select your newsletters:

Please enter your email address:

@

News & Media

Latest ITER Newsline

  • Deliveries | A third magnet ready for transport to ITER

    Three ITER magnets are now in transit to ITER from different points on the globe—two toroidal field magnets and one poloidal field coil. In terms of component w [...]

    Read more

  • Heaviest load yet | Europe's coil soon to hit the road

    It's big, it's heavy, it's precious and it's highly symbolic: the toroidal field coil that was unloaded at Marseille industrial harbour on 17 March is the most [...]

    Read more

  • Russia's ring coil | Entering the final sequence

    The smallest of ITER's poloidal field coils is entering the final sequence in a long series of activities that transform cable-in-conduit superconductor into a [...]

    Read more

  • Coping with COVID | Adjusting to maintain progress

    COVID-19 needs no introduction. But for a 35-country collaboration like ITER, the dramatic worldwide spread of the virus has introduced an entirely new set of c [...]

    Read more

  • United States | A roadmap to fusion energy

    Hundreds of scientists across the United States—representing a broad range of national labs, universities, and private ventures—have collaborated to produce A C [...]

    Read more

Of Interest

See archived entries

Smallest ring coil

Production at halfway mark

At the Srednenevsky Shipbuilding Plant in Saint Petersburg, Russia, specialists from JSC "SNSP" and the Efremov Institute (NIIEFA) are winding the fifth double pancake of the future coil.

This double pancake for poloidal field coil #1 is leading the way: it was the first pancake wound after the conclusion of qualification activities; now, it has been through the vacuum pressure impregnation process which creates a rigid assembly. (Click to view larger version...)
This double pancake for poloidal field coil #1 is leading the way: it was the first pancake wound after the conclusion of qualification activities; now, it has been through the vacuum pressure impregnation process which creates a rigid assembly.
Eight double pancakes in all will be necessary to complete this 300-tonne magnet which will be installed at the top of the machine, crowning the 18 toroidal field magnets and steel vacuum vessel. With the five other ring magnets, poloidal field coil #1 (PF1) will contribute to shaping the plasma and contributing to its stability by "pinching" it away from the walls.

Following the signature of the Procurement Arrangement with the ITER Organization in 2011, the Russian Domestic Agency chose the Efremov Institute, Saint Petersburg, as the main supplier. Most of the winding equipment has been designed, manufactured, and tested at the Efremov Institute, which has also developed some of the poloidal field coil manufacturing processes; JSC "SNSP" has contributed a number of science-based technologies. Approximately six kilometres of niobium-titanium (NbTi) superconductor will be required to wind PF1.

Winding is underway on double pancake #5 (of eight). At the same time as the niobium-titanium conductor is wound into the correct dimensions, it is insulated with glass-fibre tape. (Click to view larger version...)
Winding is underway on double pancake #5 (of eight). At the same time as the niobium-titanium conductor is wound into the correct dimensions, it is insulated with glass-fibre tape.
In 2014, all equipment was transported to the Srednenevsky Shipbuilding Plant, located in an area which is a well suited to the needs of transporting the completed component. Following the successful passage of qualification milestones, double pancake winding began in 2014. Teams are currently winding the fifth double pancake of the series of eight; the first two have passed the impregnation phase and the third is undergoing impregnation now.

During vacuum pressure impregnation, or VPI, epoxy resin is injected into a sealed mould containing the double pancake and then cured to solidify, creating a rigid assembly.

In accordance with the schedule, the magnet is to be completed, tested and delivered to the ITER site in 2021.


return to the latest published articles