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News & Media

Latest ITER Newsline

  • ITER DNA | A "case" study...

    In December last year, and again this year in early May, pre-welding fitting tests demonstrated that steel components as tall as a four-storey building (and wei [...]

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  • First plasma| Temporary in-vessel protection

    The vacuum vessel, the operating theatre of the ITER machine, needs to be protected against possible damage from the hot plasma at any given time during its ope [...]

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  • Divertor cassettes | Successful prototypes open way to series

    Before embarking on the fabrication of the 54 complex steel structures that will form a ring at the bottom of the ITER machine—the divertor cassettes—the Europe [...]

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  • Images of the week | Titan tool 90 percent complete

    Towering 22 metres above ground and weighing approximately 800 tonnes, the twin sector sub-assembly tools (SSAT) are formidable handling machines that will be u [...]

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  • Video | How does the ITER cryoplant work?

    Cold is essential to ITER—10,000 tonnes of superconducting magnets, the thermal shield that surrounds the machine, the cryopumps that achieve the high vacuum in [...]

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Of Interest

See archived articles

Room to move



In the Jules-Horowitz Research Reactor (RJH) that is being constructed at CEA-Cadarache, the seismic protection system is the same as in ITER: it consists of a first basemat upon which concrete plinths topped by antiseimic pads are installed in order to support a second basemat which bears the weight of the installation.

The RJH reactor and its enclosure being much lighter (100,000 tonnes) than the ITER Tokamak Complex (320,000 tonnes), it requires only 195 seismic pads, as compared to 493 in ITER's case.

Apart from a difference in the number of plinths and pads, and also a slightly higher "ceiling" in RJH (2.20 metres vs 1.90)  the ITER and RJH "basements" will be perfectly similar: this picture, taken last week at RJH, could be a picture taken next year in ITER ...


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