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

  • Inside the pit | From dizzying volume to cramped environment

    There was a time when the assembly pit felt like a huge arena, with toy-like tools scattered on the floor and workers reduced to Playmobil-size figures. Progres [...]

    Read more

  • Fusion world | UKAEA's CHIMERA set to transform fusion component testing

    Construction of a unique testing machine for fusion components is underway at the UK Atomic Energy Authority (UKAEA).  The machine, known as CHIMERA (or Co [...]

    Read more

  • Award | A 30-year friendship with China

    Some thirty years ago, HT-7, China's first superconducting tokamak, was entering operation and experiencing some issues with its ion cyclotron resonance (ICRH) [...]

    Read more

  • Tokamak assembly | Building the feeders, segment by segment

    Through an opening in the Tritium Building just large enough to admit the 11-metre-long components, two magnet feeder segments were introduced this month into t [...]

    Read more

  • Fusion world | Highest French distinction for former ITER Director-General

    Established in 1802 by Napoléon Bonaparte, then the First Consul of the young French Republic, the French Legion of Honour (Légion d'honneur) is the highest of [...]

    Read more

Of Interest

See archived entries

Review affirms robust design of ITER's cryolines

Natural (-10 °C) and artificial (-269 °C) cooling: the international review panel in action last week. (Click to view larger version...)
Natural (-10 °C) and artificial (-269 °C) cooling: the international review panel in action last week.
The fact that inside a fusion device it gets hotter than in the core of the sun leaves Hans Quack pretty cold. "Fusion is in fact 40 percent cryogenics," he says, and—being a professor for refrigeration and cryogenics at the University of Dresden—he knows.

At JET, cryogenics was already used for the vacuum cryopanels and for the handling of the fuel. The next step—using cryogenic refrigeration for the superconducting magnets—was pioneered at EAST, KSTAR and Wendelstein. But the ITER cryogenic system is an order of magnitude larger and much more complex than what has been built before, and is only comparable to the cryogenic system of the LHC at CERN.

The ITER machine will rely on a cryoplant, which will produce the required cooling power, and a cryo-distribution system to distribute the helium coolant to ITER's high-field magnets, cryopumps and thermal shields. "Cryolines will be crossing into the reactor," says Hans Quack "a situation that you don't have in a fission device."

This complex and sophisticated system of cryogenic transfer lines and manifolds was the subject of discussion at the ITER Headquarters last week during the conceptual design review of ITER's cryolines that was chaired by Hans Quack, and that brought together many international experts. "The very good level of preparation was recognized by the reviewers," said Luigi Serio, Responsible Officer for ITER's cryosystem, summarizing the review. "We are now sure that we have a robust design and that we can proceed with procurement of the cryolines for ITER."

The Procurement Arrangement is expected to be signed at the end of this month.


return to the latest published articles