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  • Contract management | E-procurement helps to simplify and streamline

    The Procurement & Contracts Division at the ITER Organization is rolling out a new e-procurement tool that will simplify and streamline contract management [...]

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  • Cooling water plant | Partners work in lockstep to keep ITER cool

    Much of the cooling water plant is now ready for commissioning, thanks to a well-executed plan and close coordination among partners. 'Sooner or later, all heat [...]

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  • American Physical Society | Alberto Loarte elected Fellow

    Alberto Loarte, head of the ITER Science Division, has been elected as a Fellow of the American Physical Society (APS). Loarte was nominated by the APS Division [...]

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  • Fusion events | Bringing power to the people

    In tandem with the annual Fête de la Science, a French exhibition on the sciences, the European research consortium EUROfusion is premiering a new travelling ex [...]

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  • Fusion world | Stellarators "an option" for future power plants

    In the history of magnetic fusion, the photo is iconic. A smiling, bespectacled middle-aged man stands next to a strange contraption sitting on a makeshift wood [...]

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Of Interest

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Image of the week

The shine of silver

All ITER components are precious. But some look more precious than others.

The vacuum vessel thermal shield comprises nine 40° sectors. Sector #6 is pictured here, ready to be packed and shipped to ITER. (Click to view larger version...)
The vacuum vessel thermal shield comprises nine 40° sectors. Sector #6 is pictured here, ready to be packed and shipped to ITER.
A vacuum vessel sector, a toroidal field coil, a cryopump, or a divertor cassette are priceless pieces of high technology. But they could hardly pass for jewelry.

The thermal shield could. Because its mission is to protect the tokamak's superconducting coils from thermal radiation, it is coated with the most efficient of "low-emissivity" materials. And this material happens to be ... silver.

Given the size of the thermal shield (approximately 2,000 square metres), a 5- to 10-micrometre-thick silver plating on both sides requires no less than 5 tonnes¹ of the precious metal—enough to make 625,000 sterling silver rings.

A first finalized sector of the vacuum vessel thermal shield (sector #6) has left the SFA Engineering Corp in Changwon, Korea, to be delivered to ITER.

¹Five tonnes of silver will be required in the electroplating baths. The mass of silver coating the thermal shield panels is estimated at just under 800 kg total.



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