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

Wendelstein 7-X pauses after 2,200 plasma shots

The world's biggest and most advanced fusion device of the stellarator type has successfully completed its first experimental campaign.

At Wendelstein 7-X in Germany, the original copper-chrome-zirconium heat-extraction plates will be clad with graphite tiles in the coming weeks to protect the vessel walls for the next campaign of higher-power plasmas. (Click to view larger version...)
At Wendelstein 7-X in Germany, the original copper-chrome-zirconium heat-extraction plates will be clad with graphite tiles in the coming weeks to protect the vessel walls for the next campaign of higher-power plasmas.
Located at the Max Planck Institute for Plasma Physics (IPP) in Greifswald, Germany, Wendelstein 7-X has produced approximately 2,200 plasmas since the start of operations last December, first from helium and then from hydrogen gas.

"We are more than satisfied with the results of the first experimental campaign," reports project head Thomas Klinger. From first pulses of half a second, pulse lengths of six seconds were ultimately achieved. The plasmas with the highest temperatures were produced by microwave heating of four megawatts lasting one second. At mean plasma densities, the physicists were able to measure temperatures of 100 million °C for the plasma electrons, and 10 million °C for the ions. "This greatly exceeded what our rather cautious predictions had led us to believe."

Moreover, the structure and confinement properties of the novel magnetic field proved in the first tests to be as good as expected.

Modifications in the plasma vessel are now proceeding to make the device fit for higher heating powers and longer pulses. The plasma vessel has been re-opened in order to mount 6,000 carbon tiles to protect the vessel walls and insert the divertor in order to be fit for high-power plasmas with heating powers of up to eight megawatts lasting ten seconds.

See the original story on the IPP website.


return to the latest published articles