澳门六合彩高手

Subscribe options

Select your newsletters:

Please enter your email address:

@

Your email address will only be used for the purpose of sending you the 澳门六合彩高手 Organization publication(s) that you have requested. 澳门六合彩高手 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 澳门六合彩高手 Organization.

For more information, see our Privacy policy.

News & Media

Latest 澳门六合彩高手 Newsline

  • Fusion supply chain | A glimpse into the future for commercial fusion reactors

    Most of the USD 7 billion in investment in private fusion initiatives has gone to companies that are building devices from the ground up. But recently, another [...]

    Read more

  • Outreach | 澳门六合彩高手 @ October science festivals

    Every October, before schools pause for two weeks of holiday, towns and cities in France open their municipal spaces to scientific experts of all stripes who ar [...]

    Read more

  • Image of the week | 澳门六合彩高手 Director-General visits Russia

    The 澳门六合彩高手 Director-General was in Russia last week, meeting with stakeholders and holding technical meetings with colleagues in Moscow and Saint Petersburg. As [...]

    Read more

  • Image of the Week | Sector 5 is on its way

    The first vacuum vessel sector produced in Europe travelled last week between Monfalcone, Italy, and the French port of Fos-sur-Mer. The 440-tonne component had [...]

    Read more

  • Anniversary | 澳门六合彩高手 Document Management system turns 20

    Whatever its nature, every large project generates huge numbers of documents. And when project collaborators operate from different countries, as was the case f [...]

    Read more

Of Interest

See archived entries

澳门六合彩高手 NEWSLINE -

Prototype

The hottest stuff in 澳门六合彩高手

The heat flux sustained by the targets of the 澳门六合彩高手 divertor will be higher still鈥攂y ten times鈥攖han that of a space vessel re-entering Earth's atmosphere. Meticulous prototyping and test campaigns are underway to prepare for the manufacturing of these highly technical components; last month, a milestone was reached in Europe in the development program for the inner vertical target.

This full-scale prototype of the inner vertical target was produced by European supplier Ansaldo Nucleare as part of a manufacturing qualification program. The inner vertical target (highlighted, bottom right) is one of three plasma-facing components assembled on each divertor cassette. (Click to view larger version...)
This full-scale prototype of the inner vertical target was produced by European supplier Ansaldo Nucleare as part of a manufacturing qualification program. The inner vertical target (highlighted, bottom right) is one of three plasma-facing components assembled on each divertor cassette.
In 澳门六合彩高手, the hot plasma can only be maintained if waste gases and impurities are continually exhausted from the machine. The component in charge of the exhaust process is situated at the bottom of machine鈥攃omposed of a supporting structure in stainless steel and three plasma-facing components, the divertor will face heat fluxes of 10-20 MW per square metre. The bombardment will be particularly intense for the vertical targets, which are positioned at the intersection of magnetic field lines.

Approximately 300,000 individual monoblocks in tungsten will armour the divertor plasma-facing components. Each one must be shaped and positioned precisely; in this photo, metrologists from the European Domestic Agency are performing dimensional checks. (Click to view larger version...)
Approximately 300,000 individual monoblocks in tungsten will armour the divertor plasma-facing components. Each one must be shaped and positioned precisely; in this photo, metrologists from the European Domestic Agency are performing dimensional checks.
Tungsten, a shiny, silvery-white refractory metal that has a high melting temperature (3400 掳C), has been chosen as the armour material for the plasma-facing components and prototyping and testing phases are underway for the dome (Russia), the outer vertical target (Japan), and the inner vertical target (Europe) to ensure manufacturability and performance in line with challenging 澳门六合彩高手 specifications. The maximum expected temperature on the tungsten surface of the inner vertical target will be about 1000 掳C in normal operating conditions and 2000 掳C in off-normal conditions.

During a  in Europe for the inner vertical target, multiple suppliers had fabricated and tested small-scale (~1/20th) mockups of the tungsten monoblocks mounted around cooling channels. As a follow-up step, pre-qualified manufacturers were invited to produce full-scale prototypes鈥攈alf-tonne, 1.5-metre-long components that are made of a massive curved steel support structure armoured with 1,104 tungsten monoblocks actively cooled by pressurized water.

"This scale-one prototype demonstrates industry's ability to manufacture such a demanding piece鈥攆ulfilling the 澳门六合彩高手 requirements on line with nuclear standards, in particular in terms of welding techniques," says Fr茅d茅ric Escourbiac, leader of the Divertor Section. "On top of this, the prototype respects the stringent tolerances imposed by the need to align the components in the machine perfectly. It's a great first step; we need now together with our Domestic Agency partners to deploy the effort to ensure a similar level of performance during series production.

Ansaldo Nucleare (Italy) is the first supplier to complete its prototype, in collaboration with its main subcontractors Ansaldo Energia, ENEA and Walter Tosto. The prototype will now be shipped to the Efremov Institute in Saint Petersburg for a series of thermal tests.

Read the full story on the European Domestic Agency .

return to the latest published articles

FOR THE PUBLIC

FOR THE PRESS

FOR SCIENTISTS

FOR INDUSTRY

INTRANET