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  • Cryoplant | First steps toward commissioning

    Every week since the beginning of November, a tube trailer filled with approximately 4,600 cubic metres (750 kg) of compressed gaseous helium delivers its load [...]

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  • Training | Seeking the next group of Monaco-ITER Fellows

    Recruitment opens for the next Monaco-ITER Postdoctoral Fellowship campaign on 17 January 2022. If your PhD was awarded after 1 January 2019—or you are about to [...]

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    A 'conceptual artist' among the most prominent on the art scene today, Bernar Venet is not impressed by massive towering steel structures like those in the ITER [...]

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  • Image of the week | Final activities on Europe's first sector

    The first vacuum vessel sector produced in Europe will arrive at ITER next year. Five of ITER's nine vacuum vessel sectors are the responsibility of Europe's AM [...]

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    In life as in the assembly of the ITER machine, 'lessons learned' are what makes progress possible. Gains in wisdom, time, skill, investment can be incremental; [...]

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Of Interest

See archived entries

Procurement Arrangement 44 for ITER's thermal shields

Done! ITER Director-General Kaname Ikeda and Kijung Jung, Head of the Korean Domestic Agency after signing the Procurement Arrangement for ITER's thermal shield system. (Click to view larger version...)
Done! ITER Director-General Kaname Ikeda and Kijung Jung, Head of the Korean Domestic Agency after signing the Procurement Arrangement for ITER's thermal shield system.
On Monday, 17 May, Procurement Arrangement #44 for ITER's thermal shield system was signed between the ITER Organization and the Korean Domestic Agency. The thermal shields, a key component for the successful operation of ITER, minimize the heat loads transferred by thermal radiation and conduction from the warm components inside the tokamak to the components and structures that operate at 4.5 K. The shields themselves will operate at approximately 80 K.

A view of the thermal shield system that will protect the vacuum vessel. (Click to view larger version...)
A view of the thermal shield system that will protect the vacuum vessel.
The thermal shield system is made of single-wall stainless steel panels with the cooling pipes welded to the panels. The panels are cooled by 1.8 MPa pressurized helium gas supplied by the cryoplant. Thermal radiation to the superconducting magnets confining the plasma is further reduced by providing a 5 μm thick, low emissivity silver coating on both sides of the shield plates. The shield's surface area covers 10,000 square metres and, once assembled, will stand 25 metres at its highest point.

Signing the contract is one thing. Preparing the road that leads there is another, and many people contributed. (Click to view larger version...)
Signing the contract is one thing. Preparing the road that leads there is another, and many people contributed.
The contract was signed by ITER Director-General Kaname Ikeda on behalf of the ITER Organization and the Director of the Domestic Agency Kijung Jung on behalf of the Republic of Korea. The component will be manufactured under the supervision of the National Fusion Research Institute and is expected to be delivered to the ITER construction site in southern France by late 2016.



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