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

  • Cryopumps | First unit reaches ITER

    The ITER vacuum team, the European Domestic Agency Fusion for Energy, Research Instruments (RI), and the ITER Director-General were all excited to welcome the d [...]

    Read more

  • Tritium Plant Summit | A shared vision to prepare for delivery

    A summit organized at ITER Headquarters from 3 to 6 June brought together the international teams that will deliver the sub-systems of the ITER Tritium Plant. I [...]

    Read more

  • Image of the week | ITER Robots goes international

    Thinking outside the box, teamwork and ingenuity are the ingredients that make for a successful robotics engineer—all qualities that are cultivated by participa [...]

    Read more

  • In memoriam | Physicist Michael Lehnen

    The ITER Organization mourns the passing of an outstanding physicist and beloved colleague. It is with the deepest sadness and a profound sense of loss that we [...]

    Read more

  • Cross-sector advocacy | The fusion knights

    Developing fusion as a usable energy source requires an all-hands-on-deck approach. At last week's ITER workshop, fusion advocacy organizations showed the role [...]

    Read more

Of Interest

See archived entries

Adding fuel to MAST's fire

Firing tiny deuterium pellets into the tokamak furnace is one of the most effective ways of getting fuel into the plasma, enabling fusion reactions and the unlocking of energy. (Click to view larger version...)
Firing tiny deuterium pellets into the tokamak furnace is one of the most effective ways of getting fuel into the plasma, enabling fusion reactions and the unlocking of energy.
They call it the "snowball in hell"—a bullet of frozen deuterium fuel heading at high speed into the furnace-like plasma of the MAST fusion device at Culham. A team at MAST is investigating this method of fuelling plasmas and how it will work in the future on the giant international experiment ITER.

Firing these tiny pellets is one of the most effective ways of getting fuel into the plasma, enabling fusion reactions and the unlocking of energy. This will become increasingly important as future fusion devices become bigger and plasmas get hotter to reach ignition, the point at which the plasma heats itself without external input—crucial for power-producing reactors. To achieve ignition, the density of the plasma core must be raised and sustained by fuelling it.

Luca Garzotti, one of the CCFE physicists studying pellet injection on MAST, explains the process: "Just like a car engine, a tokamak needs to be fuelled—the fuel goes in to the plasma and there is an exhaust to get rid of unwanted gases. In fusion, helium comes out of the exhaust via a system called the divertor. I'm looking at how we can put the fuel (deuterium and tritium) in at the start.

Read more on Culham Centre for Fusion Energy website.


return to the latest published articles