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  • Data | Archiving 20 gigabytes per second—and making it usable

    One of the main deliverables of ITER is the data itself—and there will be a tremendous amount of it to store and analyze. During First Plasma, the highest produ [...]

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    In the southern part of the construction platform, a one-hectare yard hosts some of the strangest-looking components of the entire ITER installation. Rows of to [...]

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    It was 8:00 p.m. on Tuesday 6 April and something quite unusual happened in the ITER Assembly Hall: applause spontaneously erupted from the teams that h [...]

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    While the advent of Covid-19 has not stopped the relentless advancement of the ITER Project, it has certainly prompted ingenuity in how ITER conducts its work. [...]

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  • Manufacturing | Europe completes pre-compression rings

    The French company CNIM (Toulon) has produced a tenth pre-compression ring for the ITER Project on behalf of Fusion for Energy, the European Domestic Agency. Th [...]

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Of Interest

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Europe's DEMO

What it could be like

It looks like ITER, feels like ITER, but it's not ITER. In this depiction of what the site layout for the next-step fusion machine, DEMO, might look like in Europe, the familiar elements are all in place. But there is one extra building, and that makes all the difference ...

Clad in blue at the centre of the illustration, one extra building makes all the difference: this is where the thermal power generated by the tokamak will be converted to electrical power by way of turbines and alternators—just like in any electricity-producing plant. (Courtesy of EUROfusion and Fusion for Energy.) (Click to view larger version...)
Clad in blue at the centre of the illustration, one extra building makes all the difference: this is where the thermal power generated by the tokamak will be converted to electrical power by way of turbines and alternators—just like in any electricity-producing plant. (Courtesy of EUROfusion and Fusion for Energy.)
DEMO is a concept for an electricity-producing, tritium-generating, long-pulse tokamak one step removed from an actual industrial and commercial fusion power plant.

The ITER Members all have a different notion of what their DEMO could be. A central requirement for the European DEMO, as defined by the EUROfusion roadmap, would be to produce several hundred megawatts of net electricity to the grid (300 to 500 MW), which is approximately ten 3-4 times less than an average nuclear fission reactor. Europe's DEMO would be a "demonstration power plant" to be followed by the first-of-a-kind fusion power plant.

And with careful observation, that is what we are seeing in this illustration, recently produced by EUROfusion and the European Domestic Agency for ITER, Fusion for Energy.

Although larger than ITER, DEMO is organized along the same logic—central Tokamak and Assembly buildings, large electrical switchyard, magnet power conversion buildings, cryoplant with helium storage tanks, and heat removal through large cooling towers. The main departure from the ITER layout is the large blue building in the centre of the illustration.

This building is where the thermal power generated by the DEMO tokamak will be converted to electrical power by way of turbines and alternators—just like in any electricity-producing plant, whether from coal, gas, fuel or nuclear fission.

One other important difference between ITER and DEMO is hidden from view—the breeding system inside the DEMO vacuum vessel that ensures the continuous production of tritium to fuel the fusion reaction, a condition sine qua non for the future of fusion energy.


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