Subscribe options

Select your newsletters:


Please enter your email address:

@

News & Media

Latest ITER Newsline

  • Heating | A pinch of moondust in the ITER plasma

    One day in the distant future, fusion plants might be fuelled by helium 3—an isotope that is extremely scarce on Earth but reputed to be abundant on the Moon. B [...]

    Read more

  • Delivery | 2,000 km through canals, locks and tunnels

    When the thruway is closed, one takes the back roads. And when it's low-water season on the Rhine-Rhône canal, a barge leaving Switzerland for the Mediterranean [...]

    Read more

  • Monaco Fellows | A hand in shaping ITER

    For the sixth time, ITER is welcoming a group of five young researchers as part of the Monaco-ITER postdoctoral fellowship scheme. Working alongside experienced [...]

    Read more

  • On site | Drone survey on a perfect day

    There are days in winter when the skies over Provence are perfectly transparent. Snowy peaks 200 kilometres away appear close enough to be touched and farms, co [...]

    Read more

  • AAAS conference | ITER on the world science stage

    With more than 120,000 members globally, the American Association for the Advancement of Science (AAAS) is billed as the world's largest scientific society. The [...]

    Read more

Of Interest

See archived entries

Shooting selected pellets into the plasma

Lynne Degitz, US ITER

The US ITER pellet injection team has designed and fabricated a new dual nozzle test article that will support both fuelling pellets and ELM pacing pellets in the ITER Tokamak. (Click to view larger version...)
The US ITER pellet injection team has designed and fabricated a new dual nozzle test article that will support both fuelling pellets and ELM pacing pellets in the ITER Tokamak.
ITER will require significant fuelling capability to operate at high density for long durations. Pellet injection provides efficient core and edge fuelling of deuterium or a deuterium/tritium mixture; the system will also deliver deuterium pellets to the plasma edge to mitigate edge localized mode instabilities (ELMs).

The US ITER pellet injection team based at Oak Ridge National Laboratory (ORNL) has designed and fabricated a new dual nozzle test article that will support both fuelling pellets and ELM pacing pellets in the ITER Tokamak.

The article was manufactured by Apollo Corporation in Wartburg, Tennessee. The component features shut-off nozzles which permit the selection of 5 mm fuelling pellets or 3 mm ELM pacing pellets; it is also possible to adjust the pellet length in order to tailor the amount of fuel or ELM pacing material delivered to the plasma.

A test stand at the ORNL Pellet Lab is being prepared and testing of the component will occur later this year. In the ITER machine, the pellets cut from the dual nozzle assembly will travel through the pellet selector to the pellet guide tubes, which direct fuelling and ELM pellets to specific areas of the plasma.


return to the latest published articles