Subscribe options

Select your newsletters:


Please enter your email address:

@

News & Media

Latest ITER Newsline

  • Cryoplant | A vertical displacement event

    Three vertical storage tanks have been installed since last week outside of the cryoplant. The operation requires two powerful cranes working in tandem but also [...]

    Read more

  • Science in Texas | ITER draws enthusiasm

    At its Annual Meeting in Austin, Texas, the American Association for the Advancement of Science, AAAS, invited participants to illustrate how investment in basi [...]

    Read more

  • Image of the week | In the belly of the (flying) whale

    On 15 February, 'Isabelle' and 'Jeanne,' the last of the ten toroidal field coils manufactured in France for the EU-Japan tokamak JT-60SA, were swallowed into t [...]

    Read more

  • Nuclear safety | "A pragmatic and creative approach"

    Safety is at the core of all nuclear activities. Over the past seven decades—since the first experimental reactor was brought to criticality in 1942—codes, stan [...]

    Read more

  • Intellectual property | Modernizing processes and practices

    'A wise man will always allow a fool to rob him of ideas without yelling 'Thief.' If he is wise, he has not been impoverished,' says Ben Hecht in A Child of the [...]

    Read more

Of Interest

See archived articles

Adding fuel to MAST's fire

Culham Centre for Fusion Energy

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