Enable Recite

Subscribe options

Select your newsletters:

Please enter your email address:

@

Your email address will only be used for the purpose of sending you the ITER Organization publication(s) that you have requested. ITER Organization will not transfer your email address or other personal data to any other party or use it for commercial purposes.

If you change your mind, you can easily unsubscribe by clicking the unsubscribe option at the bottom of an email you've received from ITER Organization.

For more information, see our Privacy policy.

News & Media

Latest ITER Newsline

  • Art and ITER | Two sisters, two suns and a monument to fusion

    Amid the gentle slopes of Asciano, Italy, there stands a stone window that frames the Sun on the summer solstice. It looks as though it might have always been t [...]

    Read more

  • Staff | The men and women of ITER

    They hail from Ahmedabad and Prague ... from Naka and Moscow ... from Seoul, Hefei, Atlanta and hundreds of other towns and cities across the 35 nations partici [...]

    Read more

  • ITER Talks | All about ITER and fusion

    Beginning this autumn, the ITER Organization will be launching a new video series to inform, inspire and educate. The first video—introducing the series and off [...]

    Read more

  • Image of the week | A majestic components enters the stage

    The floor of the Assembly Hall is an ever-changing stage. Like characters in a grand production, components of all size and shapes make a spectacular entry, pl [...]

    Read more

  • Magnet system | A set of spares for the long journey

    In about five years, ITER will embark on a long journey through largely uncharted territory. Conditions will be harsh and—despite all the calculations, modellin [...]

    Read more

Of Interest

See archived entries

Assembly Hall

First tool tested in June

Good progress on the installation of the first of two specialized tools for vacuum vessel pre-assembly means that by late June, the 22-metre-tall giant will be ready for functional testing.
 
Although similar in colour to the building structure, the first sector sub-assembly tool is a striking new presence in the Assembly Hall—22 metres tall and built from 800 tonnes of metal. In the foreground are the two outboard columns that will be installed this month. (Click to view larger version...)
Although similar in colour to the building structure, the first sector sub-assembly tool is a striking new presence in the Assembly Hall—22 metres tall and built from 800 tonnes of metal. In the foreground are the two outboard columns that will be installed this month.
Side-by-side in the Assembly Hall, the largest bespoke tools in the project's assembly toolkit will be active for approximately three years—from 2019 to 2021—smoothly opening and closing their lateral wings (millimetre by millimetre) to associate thermal shielding and a pair of toroidal field coils to each of the nine vacuum vessel sectors before their transfer to the Tokamak Pit for welding.

The three-footed tools will support the 440-tonne sectors vertically, as the components are positioned and aligned to millimetre-level assembly tolerances. Each unit—built from 800 tonnes of metal plus auxiliary components—is designed to support nearly 1,200 tonnes of dead weight.

A sophisticated system of actuators on the lower platforms will allow operators to control alignment to within one millimetre. A dummy load of 340 tonnes will be tested on the equipment early next year. (Click to view larger version...)
A sophisticated system of actuators on the lower platforms will allow operators to control alignment to within one millimetre. A dummy load of 340 tonnes will be tested on the equipment early next year.
The first tool, delivered to ITER in batches last year by the Korean Domestic Agency, is now nearly completely assembled, with all key components for the rails, rotating frames, rotating arms and inboard column in place. By the end of April the remaining equipment—lower alignment units and two outboard columns—will have been installed.

Functional tests are planned in June. The same month, the second sector sub-assembly tool—which completed factory acceptance tests at Taekyung Heavy Industries in Korea in March—will be delivered to ITER for assembly.

By next February, both tools will be ready for the final test before entering operation—verification with a full-weight dummy load of 340 tonnes, or the weight of one toroidal field coil plus a 10 percent safety margin. This final qualification activity will allow operators to verify the tools' ability to accurately adjust the dummy load toroidally and to six degrees of freedom* within tolerances of +/- 1 millimetre.

*Six degrees of freedom refers to adjustability along X, Y and Z axes (up and down, side to side, forward and backward) as well as in rotational directions relative to the axes (swivel, tilt, pivot).


return to the latest published articles