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  • 23rd ITER Council | Pace and performance on track

    Working as an integrated team, the ITER Organization and seven Domestic Agencies are continuing to meet the project's demanding schedule to First Plasma in 2025 [...]

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  • Huffing and puffing | Testing the endurance of steering mirrors

    On the computer screen, a set of three metal bellows 'breathe' in a steady rhythm. Nuclear engineer Natalia Casal and materials engineer Toshimichi Omori are on [...]

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  • ITER R&D | News from the Neutral Beam Test Facility

    At Consorzio RFX, where ITER's most powerful external heating system will be tested in advance, activities are progressing well on two distinct test beds. ITE [...]

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  • Vacuum vessel welding | Rehearsing a grand production

    There is a place near Santander, Spain, where one can actually feel what ITER will be like. Although we've seen dozens of drawings and 3D animations, the encoun [...]

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  • Image of the week | A plasma-enlightened training course

    The Vacuum Section hosted approximately 40 people last week from the ITER Organization and the Domestic Agencies for a two-day training session on vacuum. [...]

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Of Interest

See archived entries

Procurement Arrangement 44 for ITER's thermal shields

Sabina Griffith

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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