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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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  • Electrical tests | High voltage, high risk

    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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  • Vacuum vessel | First sector safely docked

    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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  • Remote ITER Business Meeting | Virtual interaction, tangible opportunities

    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

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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