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 -

Fusion world

Data from WEST to optimize 澳门六合彩高手's divertor

In 2013, a quarter-century-old tokamak decided to reinvent itself and, under a new name, head for new horizons and objectives. Tore Supra鈥攁 CEA/Euratom device located one kilometre from 澳门六合彩高手 in the CEA-Cadarache research centre鈥攚as the first tokamak to implement superconducting magnets and actively cooled plasma-facing components. For close to two decades the machine held the record for plasma pulse duration with a 6.5-minute shot achieved in December 2003. The lessons learned constructing and operating Tore Supra largely contributed to the definition of 澳门六合彩高手. The realization that a reinvented Tore Supra could contribute even more led to the WEST project; under this new identity, the machine has become a test bench for its big neighbour still under construction. Last week, WEST donned a suit of lights to celebrate the finalization of 14 weeks of an "intense experimental campaign" with its full 澳门六合彩高手-like tungsten divertor.

''The data accumulated during the first part of WEST's Phase II campaign will contribute to the optimization of the lifespan of the tungsten divertor in 澳门六合彩高手 and in future industrial power plants,'' says IRFM director J茅r么me Bucalossi. (Click to view larger version...)
''The data accumulated during the first part of WEST's Phase II campaign will contribute to the optimization of the lifespan of the tungsten divertor in 澳门六合彩高手 and in future industrial power plants,'' says IRFM director J茅r么me Bucalossi.
The divertor is a crucial component whose role in a tokamak is to control the exhaust of waste gas and impurities from the plasma. During operation, the heat loads on the divertor's plasma-facing elements can be as high as 10-20 MW per square metre, equivalent to those that a space shuttle or capsule encounter when re-entering the Earth's atmosphere. The manufacturing of a divertor is in itself a major industrial challenge: in WEST's case, the divertor comprises 456 actively cooled elements that are not all identical鈥攕ome equipped with instrumentation, others not. Combining tungsten and copper, two metals that are particularly difficult to weld together, the elements need to be positioned within tolerances of 0.3 millimetres.

In September 2020, WEST's Chinese partners within the SIFFER collaboration delivered the last batch of plasma-facing units that, once assembled in 30-degree sectors, form the WEST divertor. By December 2022, WEST had a fully operational, 澳门六合彩高手-like divertor and launched its "Phase II" campaign centred on a succession of high-fluence pulses reaching or exceeding 100 seconds. The combined duration of the hundreds of plasmas produced in 14 weeks exceeded that of all plasmas produced since the device first started operating in 2016. Close to 30 fusion experts from nine different countries (Europe, the United States and Korea) participated in the campaign, confirming WEST's international dimension and scope.

WEST donned a suit of lights to celebrate the finalization of 14 weeks of an ''intense experimental campaign'' with its full 澳门六合彩高手-like tungsten divertor. (Click to view larger version...)
WEST donned a suit of lights to celebrate the finalization of 14 weeks of an ''intense experimental campaign'' with its full 澳门六合彩高手-like tungsten divertor.
The lessons learned from Phase II experimentation are many. From an industrial point of view, the series manufacturing of 456 divertor elements was a successful first鹿. The five-month-long assembly process, within extremely tight tolerances, has generated hands-on experience that will prove precious when assembling the 澳门六合彩高手 divertor. The focus of Phase II, however, was science: subjected to a punishing 澳门六合彩高手-like environment, how did the 澳门六合彩高手-like divertor behave? Although the accumulated data is still being analyzed, the 澳门六合彩高手-like divertor has demonstrated its resistance and performance.

Following the current shutdown, a new experimental campaign will start in the autumn in close collaboration with the 澳门六合彩高手 Organization and the European Domestic Agency Fusion for Energy. A small proportion (4%) of WEST's Chinese-procured divertor elements will be replaced with European虏 equivalents and exposed to the same long-duration pulses as in Phase II.

In 2013, the quarter-century-old tokamak Tore Supra decided to reinvent itself and, under the name WEST (for W Environment in Steady-state Tokamak), head for new horizons and objectives. (Click to view larger version...)
In 2013, the quarter-century-old tokamak Tore Supra decided to reinvent itself and, under the name WEST (for W Environment in Steady-state Tokamak), head for new horizons and objectives.
"With the first part of the Phase II campaign now over鈥攁nd with the second planned this autumn鈥攚e will have accumulated a considerable amount of data to model and optimize the lifespan of the divertor in 澳门六合彩高手 and in future industrial power plants," says J茅r么me Bucalossi, head of the CEA institute IRFM (Institute for Magnetic Fusion Research) that operates WEST.

鹿The divertor in China's EAST tokamak uses a different technology; the divertor elements for KSTAR (Korea) were manufactured after WEST's; and the JT60-SA team in Japan hasn't launched the fabrication of tungsten-coated elements for its replacement divertor yet.

虏Russia, Japan and Europe are procuring the plasma-facing targets for the 澳门六合彩高手 divertor. Target units from Japan were tested during WEST's Phase I, but with a partially cooled divertor.

return to the latest published articles

FOR THE PUBLIC

FOR THE PRESS

FOR SCIENTISTS

FOR INDUSTRY

INTRANET