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  • Local partners | A celebration for ITER's "vital artery"

    ITER is made possible through the work of thousands of scientists, engineers, workers of all trades and industries across the globe. It is also made possible by [...]

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  • Photo reportage | Travelling with a coil

    From the salt marshes of the inland sea Étang-de-Berre to the rolling hills around the ITER site (with a view of some of the highest alpine summits) an ITER con [...]

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  • Image of the week | Shiny steel and sharp edges

    All shiny steel, sharp edges and perfectly machined penetrations and grooves, two toroidal field coils are being prepared for the pre-assembly process. The sp [...]

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  • Vacuum vessel sector #6 | On its way

    A 440-tonne, 40-degree sector of the ITER vacuum vessel left Busan, Korea, on Sunday 28 June. A unique component has taken to the sea—one that was more than t [...]

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    In the small Korean village (25 houses!) where Keun-Kyeong Kim spent the first eight years of his life, there was no electricity— just batteries to power transi [...]

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Of Interest

See archived entries

Progress on magnet supports in China

ITER China

The gravity and poloidal field magnet supports, shown here, represent more than 350 tonnes of equipment. (Click to view larger version...)
The gravity and poloidal field magnet supports, shown here, represent more than 350 tonnes of equipment.
The Chinese Domestic Agency is building the full set of magnet supports for ITER, representing more than 350 tonnes of equipment. The magnet supports will support the overall tokamak gravity load of 10,000 tonnes as well as withstand the unprecedented large electromagnetic loads experienced by the magnets.

The gravity support system, attached to the base of the cryostat with 18-fold symmetry (see image), needs to accommodate local thermal shrinkage during operation of -32 mm for the toroidal field coil structure cooled to 4 K while remaining rigid against all out-of-plane bending.
 
In May, representatives of the ITER Organization and the Chinese Domestic Agency were present to witness a step forward in the preparation of a gravity support mockup test frame, which is part of the qualification phase of the Magnet Supports Procurement Arrangement.

On 20 May 2013, representatives from the ITER Organization and the Chinese Domestic Agency witnessed the installation of the gravity support mockup multi-dimensional loading frame and preparation work for further qualification tests scheduled in September at SWIP, Chengdu. (Click to view larger version...)
On 20 May 2013, representatives from the ITER Organization and the Chinese Domestic Agency witnessed the installation of the gravity support mockup multi-dimensional loading frame and preparation work for further qualification tests scheduled in September at SWIP, Chengdu.
The mockup aims to verify the reliability of design and simulate some sub-scale operation loads on the ITER gravity supports. To this aim, a true-size gravity support mockup and a multi-dimensional loading test frame system was designed by the Southwestern Institute of Physics (SWIP).

At the beginning of 2012, the loading frame system was fabricated by the Changchun Research Institute for Mechanical Science Co, Ltd. and pre-accepted by both the Chinese Domestic Agency and SWIP. It was delivered to SWIP in February for assembly.
 
In May 2103, the first set of Alloy 718 fasteners were released for the final gravity support mockup test installation; these had been manufactured by Guizhou Aerospace Xinli Casting & Forging Co., Ltd.

Wuhan Heavy Machinery, the main machining and welding supplier of the Chinese Domestic Agency, is currently producing prototypes of poloidal coil supports in order to optimize and qualify final manufacturing processes in the prospect of beginning series manufacturing in 2014.


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