Of Interest archive

DIII-D tokamak passes 200,000 shots

The DIII-D tokamak team at General Atomics (San Diego, US) is celebrating a milestone this month—achieving, and passing, the 200,000th plasma shot since the device began operating in the mid-1980s.

“While completing 200,000 shots is impressive in its own right, this achievement is far more than a mere number,” said Dr. Richard Buttery, Director of the DIII-D National Fusion Facility. “Those shots represent steady, important progress on the road to fusion energy. Each one is a challenge solved, a question answered, a career begun or progressed, or a new technology proven. In a very real sense, the history of DIII-D is a history of fusion energy research, and we are very excited for what we have planned for DIII-D in the future.”

See the full DIII-D press release .

--DIII-D users celebrate as the machine reaches its 200,000th experimental cycle. (General Atomics)

25 Oct 2024

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5 Jan 2015

Of interest

Assystem releases three videos on its participation in ��app

Assystem, a leading international group in the fields of engineering and innovation consultancy, is part of the ENGAGE consortium (Assystem…

Assystem releases three videos on its participation in ��app

Assystem, a leading international group in the fields of engineering and innovation consultancy, is part of the consortium (Assystem, France; Atkins, UK; Empresados Agrupados, Spain; and Iosis, France) that was chosen in 2010 as architect/engineer for ��app site construction by the European Domestic Agency, Fusion for Energy (F4E).

The company is also contributing to the project by providing expertise in such domains as design, construction, machine assembly, and the manufacturing of high technology remote handling systems for the ��app divertor.

In December, Assystem released a series of three corporate videos highlighting its contributions to ��app. ��app 100 people attended a showing organized near the ��app site, including Assystem executives Stéphane Aubarbier (Executive Vice-President), Christian Jeanneau (Engineering and Operation Services Director General) and Bernard Blanc (Nuclear Business Development Manager); the mayor of Vinon-sur-Verdon, Claude Cheilan; Site, Buildings and Power Supplies Project Manager for the European Domestic Agency, Laurent Schmieder; and Michel Claessens, Head of Communication at the ��app.

The three videos can be viewed .

5 Jan 2015

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5 Jan 2015

Of interest

The future of fusion power

The next two years in MIT's Department of Nuclear Science and Engineering (NSE) may see fusion research embark on a landmark period of…

The future of fusion power

The next two years in MIT's Department of Nuclear Science and Engineering (NSE) may see fusion research embark on a landmark period of innovation. In his address to the NSE community in the inaugural Del Favero Doctoral Thesis Prize Lecture, Zach Hartwig PhD '14 not only described his group's research achievements but also explained why, in his view, fusion research should now be at the top of the department's agenda. Hartwig argued that U.S. fusion research, which has been focused on physics for the past two decades, now needs to incorporate more attention to engineering, utility integration, and economics as it transitions to building devices that will produce energy — and that this can be achieved by leveraging the tremendous engineering and systems expertise of NSE.

Read the whole article on the MIT News .

5 Jan 2015

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5 Jan 2015

Of interest

Now on show: the ��app absolute valve

Visitors coming to the ��app site will from now on have one more attraction to discover: The mock-up of an ��app absolute valve seal and test…

Now on show: the ��app absolute valve

Visitors coming to the ��app site will from now on have one more attraction to discover: The mock-up of an ��app absolute valve seal and test rig, used to demonstrate the feasibility of the largest high pressure, all-metal valve, ever to be manufactured.

��app will rely on two very powerful neutral beam injectors to heat the plasma to fusion temperatures. A third injector will also be installed—the diagnostic neutral beam injector—which is used as a diagnostic for the plasma.

Each injector contains a vacuum vessel which needs to be vented to atmospheric pressure independently from the torus vacuum vessel in case of an incident. An absolute valve has thus been developed by the Swiss company VAT to "absolutely" isolate the vacuum in the torus from the neutral beam vacuum systems.

The valve uses seals made of stainless steel with silver coating to ensure high vacuum tightness up to a pressure differential of 0.1 MPa across the plate while maintaining a leak rate of less than 1·10-8 Pa·m3/s 1, but can withstand up to 0.2 MPa without incurring damage. With a nominal bore dimension of 1600 mm this absolute valve will be the largest ever manufactured, approximately five times bigger than existing products.

5 Jan 2015

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��app

Of Interest archive

2015

Assystem releases three videos on its participation in ��app

The future of fusion power

Now on show: the ��app absolute valve

San Diego comes to ��app

Growing interest in fusion energy

Feeders: the last gallery component takes its place

��app 2024 Report on Human Resources

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Of Interest archive

2015

Assystem releases three videos on its participation in ������app

The future of fusion power

Now on show: the ������app absolute valve

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��app

Assystem releases three videos on its participation in ��app

Now on show: the ��app absolute valve