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News & Media

Latest ITER Newsline

  • A world in itself

    From a height of some 50 metres, you have the entire ITER worksite at your feet. The long rectangle of the Diagnostics Building stands out in the centre, with [...]

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  • US completes toroidal field deliveries for ITER

    The US Domestic Agency achieved a major milestone in February by completing the delivery of all US-supplied toroidal field conductor to the European toroidal fi [...]

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  • Thin diagnostic coils to be fitted into giant magnets

    Last week was marked by the first delivery of diagnostic components—Continuous External Rogowski (CER) coils—from the European Domestic Agency to the ITER Organ [...]

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  • Addressing the challenge of plasma disruptions

    Plasma disruptions are fast events in tokamak plasmas that lead to the complete loss of the thermal and magnetic energy stored in the plasma. The plasma control [...]

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  • Blending (almost) seamlessly into the landscape

    Located in the foothills of the French Pre-Alps, the ITER installation blends almost seamlessly into the landscape. The architects' choice ofmirror-like steel c [...]

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Of Interest

See archived articles

Review of ITER's Upper Port Plugs

-Spencer Pitcher, ITER Diagnostic Physicist

Location of Diagnostic Port Plugs on ITER. (Click to view larger version...)
Location of Diagnostic Port Plugs on ITER.
One key aspect of the research program of ITER is the diagnosis of the plasma and the first-wall, e.g. the plasma temperature, its density, its radiative properties, its first-wall resilience. For this purpose, a large number of diagnostics peer into the ITER vacuum vessel from many different vantage points.

The focus of the Design Review being held next week here in Cadarache is the generic location known as the upper port plugs. The diagnostic Generic Upper Port Plug (GUPP) design is meant to be common to all upper port-based diagnostic systems. It provides a common platform, or support/container, for a variety of diagnostics. In addition, the port plug structure must contribute to the nuclear shielding, or plugging, of the port and further contain circulated water to allow cooling during operation and heating during bake-out. The port plug must withstand disruption forces, thermal stresses and seismic events.

The design of the GUPP represents the culmination of two years of collaborative work involving the ITER Organization, most of the Domestic Agencies - including a leading role by the US DA (Princeton Plasma Physics Lab) - and several industrial contractors.


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