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

  • Interview | Michel Huguet on the long chain of "fusion builders"

    Some thirty years ago, the ITER Project entered what is called the Engineering Design Activities, a phase which aimed at providing the engineering drawings and [...]

    Read more

  • 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. Saili [...]

    Read more

  • On site | Safety comes first

    Whether they spend their day in an office at ITER or on one of the upper floors of the Tokamak Complex, driving a vehicle or manoeuvring a crane, every per [...]

    Read more

  • Visitors | EU Commissioner for Energy: "ITER is a unique project in frontier science"

    Kadri Simson, European Union Commissioner for Energy, spent Friday 17 September at ITER. In the course of her visit to key site installations and during the pre [...]

    Read more

  • Image of the week | 2nd vacuum vessel sector passes site tests

    On 27 August, the ITER community celebrated the safe arrival of vacuum vessel sector #1(7)—the second of four sectors expected from the Korean Domestic Agency. [...]

    Read more

Of Interest

See archived entries

W7-X stellarator : the step-by-step march toward first plasma

Preparing a fusion device for first plasma is a step-by-step, carefully monitored process. In the last two months at Wendelstein 7-X, superconducting temperatures of 4 K were achieved, the vessel was sealed tight, and evacuation (to create a vacuum) began. In May, the magnets will be tested for the first time under power. Photo: IPP, Torsten Bräuer (Click to view larger version...)
Preparing a fusion device for first plasma is a step-by-step, carefully monitored process. In the last two months at Wendelstein 7-X, superconducting temperatures of 4 K were achieved, the vessel was sealed tight, and evacuation (to create a vacuum) began. In May, the magnets will be tested for the first time under power. Photo: IPP, Torsten Bräuer
Preparations for the operation of the Wendelstein 7-X fusion device in Greifswald, Germany are in full swing. In advance of the decisive magnet cooling stage many preparatory steps have been carried out, including the cleaning and flushing of the numerous helium cooling pipes and the start-up of the cryoplant (which had undergone thorough testing at an earlier date). 

On 13 February the gradual cooling of the cryoplant got off to a start. All systems were carefully monitored during the step-by-step process, with particular attention to checking for leaks in the piping or cooling systems.

Four weeks later, on 10 March, the target temperature of 4 K was attained—an essential milestone, as well as a prerequisite, for superconductivity in the magnets. Verifications will still take some time yet; presumably in May the magnets will be tested for the first time under power.

On 12 March the last ports in the plasma vessel were sealed vacuum-tight and evacuation of the vessel could begin. In addition to readying diagnostic equipment and working on switchgear and cabling, the verification of leak-tightness in the numerous connections and seals is proceeding. 

A "first plasma" in Wendelstein 7-X is expected by the end of 2015, at the latest.

Read the original article on the IPP website.


return to the latest published articles