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The new ITER Star Awards recognize exemplary performance and commitment. Every year, during the annual assessment campaign, ITER staff may be recognized for exe [...]
MT-28 Conference | Superconducting magnets as a catalyst
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The Swiss TCV tokamak (for Tokamak à Configuration Variable, or 'variable configuration' tokamak) has been exploring the physics of nuclear fusion for 30 years [...]
A visit to ITER would not be complete without a peek into the Tokamak pit where the machine is being progressively assembled. For several years, one of the equa [...]
ITER Director-General Pietro Barabaschi and the Chinese Minister of Science and Technology (MOST) Wang Zhigang share a common academic background. They both tra [...]
Cryostat | Home stretch for base and lower cylinder
Just over two years after the first welding activities were initiated in the Cryostat Workshop at ITER, Indian Domestic Agency contractors are executing the final assembly tasks on the two lower sections of the cryostat—the base and the lower cylinder. Site acceptance tests are planned in March/April.
The components of the cryostat base—the 20-metre-in-diameter bottom disk, side shells, and 30-metre-in-diameter pedestal ring—are positioned for final assembly in the Cryostat Workshop. After welding, tests and final machining, site acceptance tests will be carried out in April 2019.
On large steel frames at either end of the Cryostat Workshop ITER's largest component—and the world's largest stainless steel high-vacuum pressure chamber—is taking shape. The 29 x 29 metre cryostat has two important functions in the ITER machine: it provides a vacuum environment to critical "cold" components (the magnets operating at 4.5 K and thermal shield operating at 80 K); and it has a structural role in supporting the mass of the Tokamak and transferring horizontal and rotational forces to the radial walls.
The assembly of the cryostat has been underway since September 2016, when teams of welding specialists began assembling the pie-slice-shaped segments of tier one of the base. Work began in 2017 on the lower cylinder and today, the fabrication of both lower sections has advanced to the final activity stage under Indian contractor Larsen & Toubro (manufacturing design, fabrication and assembly) and sub-contractor MAN Energy Solutions (welding).
The last seam welds are underway now on the lower cylinder, while the three parts of the base—lower sandwich, upper pedestal, and vertical shells—have been aligned for final welding and assembly.
