Subscribe options

Select your newsletters:

Please enter your email address:

@

News & Media

Latest ITER Newsline

  • Cryostat base | Grand opening soon

    Picture a giant soup plate, 30 metres in diameter, slowing descending into a deep concrete cylinder. Track the near imperceptible movement of the double overhea [...]

    Read more

  • Research | ITER Scientist Fellows are at the cutting edge

    In the area of cutting-edge research—and particularly the sophisticated modelling of plasmas—the project is benefitting from the assistance of world-renowned ex [...]

    Read more

  • Image of the week | Testing the load path

    Teams are preparing now for the commissioning and dynamic load tests that will be carried out in the coming weeks on the assembly bridge cranes. The load tests, [...]

    Read more

  • In memoriam | Physicist John Wesson

    The theoretical physicist, author of a major reference book on magnetic confinement fusion in tokamaks, was known to many members of the ITER community. Some [...]

    Read more

  • CODAC | The "invisible system" that makes all things possible

    It is easy to spot all the big equipment going into ITER; what is not so visible is the underlying software that makes the equipment come alive. Local control [...]

    Read more

Of Interest

See archived entries

Successful jacketing in Protvino

Alexander Petrov, ITER Project Center Russia

The spooling of the jacketed conductor at the High Energy Physics Institute in Protvino. (Click to view larger version...)
The spooling of the jacketed conductor at the High Energy Physics Institute in Protvino.
Manufacturing the toroidal field conductors for the ITER magnet system is a sophisticated, multistage process that was pioneered in Russia in summer of 1997.
 
Earlier this year, the specialists at JSC VNIIKP Podolsk cables a 760-metre cable made from 900 niobium-tin strands and 522 copper strands assembled in five stages around a central cooling spiral—the second product of this kind manufactured in Russia.
Late February, at the brand-new jacketing line at the High Energy Physics Institute in Protvino, this cable was pulled through a stainless steel jacket assembly.
 
This photo shows the lead wire used to insert the cable into the jacket assembly. (Click to view larger version...)
This photo shows the lead wire used to insert the cable into the jacket assembly.
The successful cable pull-through process, which required the most advanced Russian technical know-how, was accomplished with representatives of the Russian Domestic Agency and the ITER Organization present. The jacket itself, reaching nearly one kilometre in length, is composed of more than 70 austenitic steel tubes, butt-welded by gas tungsten-arc welding technology. Each orbital weld was subjected to stringent quality control tests, including X-ray, local helium leak tests, and dye penetrant.
 
Each orbital weld is subjected to stringent quality control tests, including X-ray, local helium leak test and dye penetrant. This photo shows the X-ray camera used for the quality checks.<br /><br /> (Click to view larger version...)
Each orbital weld is subjected to stringent quality control tests, including X-ray, local helium leak test and dye penetrant. This photo shows the X-ray camera used for the quality checks.

This insertion stage was followed by the compaction and spooling of the conductor (cable plus jacket) on a four-metre-diameter solenoid—a process that will take approximately two weeks. The product will then be transported to the Kurchatov Institute where it will undergo vacuum and hydraulic tests and await shipment to Italy, where the conductor will be wound.     

We wish to thank Arnaud Devred, Superconductor Section Leader, for his contribution to this article. 


return to the latest published articles