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

  • Cryopumps | First unit reaches ITER

    The ITER vacuum team, the European Domestic Agency Fusion for Energy, Research Instruments (RI), and the ITER Director-General were all excited to welcome the d [...]

    Read more

  • Tritium Plant Summit | A shared vision to prepare for delivery

    A summit organized at ITER Headquarters from 3 to 6 June brought together the international teams that will deliver the sub-systems of the ITER Tritium Plant. I [...]

    Read more

  • Image of the week | ITER Robots goes international

    Thinking outside the box, teamwork and ingenuity are the ingredients that make for a successful robotics engineer—all qualities that are cultivated by participa [...]

    Read more

  • In memoriam | Physicist Michael Lehnen

    The ITER Organization mourns the passing of an outstanding physicist and beloved colleague. It is with the deepest sadness and a profound sense of loss that we [...]

    Read more

  • Cross-sector advocacy | The fusion knights

    Developing fusion as a usable energy source requires an all-hands-on-deck approach. At last week's ITER workshop, fusion advocacy organizations showed the role [...]

    Read more

Of Interest

See archived entries

Wendelstein 7-X

A stellarator record for "triple product"

There is news of success from Wendelstein 7-X, where a record "triple product" value for stellarators was obtained during the most recent experimental campaign.

The new graphite tile cladding at Wendelstein 7-X permits higher termperatures and longer plasma discharges. (Click to view larger version...)
The new graphite tile cladding at Wendelstein 7-X permits higher termperatures and longer plasma discharges.
Newly equipped with 8,000 graphic wall tiles and ten divertor modules, Wendelstein 7-X resumed operation in September 2017, ready for higher plasma temperatures and longer discharges.

The first experiences with the new wall elements were highly positive, according to Thomas Sunn Pedersen, head of the Stellarator Edge and Divertor Physics group. Plasmas lasting 26 seconds (up from six during the first campaign) and 75 MJ (18x higher) were routinely produced.

As a result, a record value for fusion triple product (a plasma's particle density, energy confinement time, and ion temperature) was achieved. This parameter tells scientists how close they are getting to the values needed to "ignite" the plasma and have it become completely self-sustaining (i.e., without external heating).

Further adjustments to the device's diagnostic and heating systems are planned. The objective of Wendelstein 7-X is to investigate the suitability of the stellarator type of fusion device for a future power plant.

Read the article published on the website of the Max Planck Institute for Plasma Physics (IPP).


return to the latest published articles