Subscribe options

Select your newsletters:


Please enter your email address:

@

News & Media

Latest ITER Newsline

  • Question of the week | Will fusion run out of fuel?

    One of the paradoxes of fusion, the virtually inexhaustible energy of the future, is that it relies on an element that does not exist—or just barely. Tritium, o [...]

    Read more

  • Managing data | Setting up a robust process

    Are the ITER systems and processes robust enough to manage the technical and project data for a program of ITER's complexity? Will quality information be made a [...]

    Read more

  • Image of the week | Bullseye

    Two perfectly circular structures, looking a lot like archery targets, have been installed on the west-facing wall of the Tokamak Complex. They are not for sh [...]

    Read more

  • Art and science | Seeking new perspectives on fusion

    Standing in the middle of the Tokamak Building, sound artist Julian Weaver positions his 3D microphone near one of the openings of the bioshield to record the s [...]

    Read more

  • Worksite photos | The view one never tires of

    For the past three-and a half years, ITER Communication has been documenting construction progress from the top of the tallest crane on the ITER worksite. Altho [...]

    Read more

Of Interest

See archived entries

Diagnostic first wall passes review

Angela Saenz, Systems Management Section

The diagnostic first walls, weighing up to 2 tonnes, protect the diagnostic instruments from thermal loads, neutron damage, coating by dust and metallic vapour deposition. (Click to view larger version...)
The diagnostic first walls, weighing up to 2 tonnes, protect the diagnostic instruments from thermal loads, neutron damage, coating by dust and metallic vapour deposition.
From 8-9 December 2014, years of effort and international collaboration paid off as the Final Design Review for the diagnostic first wall was successfully held at ITER Headquarters.

ITER diagnostics will be housed within massive port plugs—stainless steel blocks weighing up to 45 metric tons (for equatorial ports) that "plug" openings in the vacuum vessel. At the equatorial (middle) and upper levels, at least 18 port plugs will be customized to receive diagnostic instruments that will measure plasma temperature, density, radiative properties and first-wall resilience. These sensitive diagnostic instruments need protection from thermal loads, neutron damage, coating by dust and metallic vapour deposition; for this purpose, a diagnostic first wall is installed on the port plugs.

The Final Design Review focused on design aspects that are common to all diagnostic first walls. With a total of 108 pages each, the design reports carefully went over the design requirements, the detailed geometry, and the manufacturing studies of the equatorial and upper port diagnostic first walls that were felt to reflect a wide range of diagnostic first wall configurations. In addition, all the basic configurations and common features were evaluated to allow extrapolation, later on, to specific diagnostic first walls.

The joint efforts of the ITER Diagnostics team and the Princeton Plasma Physics Laboratory—working under a design Task Agreement signed between the ITER Organization and the US Domestic Agency—concluded with a successful Final Design Review and a team commendation during the ITER Recognition Ceremony held in December. The members of the team are Victor Udintsev, Thibaud Giacomin, Julio Guirao, Christian Vacas and Silvia Iglesias from the ITER Organization and Douglas Loesser, Mark Smith and Yuhu Zhai from the Princeton Plasma Physics Laboratory.


return to the latest published articles