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

  • ITER Design Handbook | Preserving the vital legacy of ITER

    The contributions that ITER is making to fusion physics and engineering—through decades of decisions and implementation—are delivering insights to the fusion co [...]

    Read more

  • Electron cyclotron heating | Aligning technology and physics

    ITER, like other fusion devices, will rely on a mix of external heating technologies to bring the plasma to the temperature necessary for fusion. At a five-day [...]

    Read more

  • Poloidal field magnets | The last ring

    As the massive ring-shaped coil inched its way from the Poloidal Field Coils Winding Facility, where it was manufactured, to the storage facility nearby where i [...]

    Read more

  • Heat rejection | White "smoke" brings good news

    Like a plume of white smoke rising from a cardinals' conclave to announce the election of a new pope, the tenuous vapour coming from one of the ITER cooling cel [...]

    Read more

  • WEC 2024 | Energy on centre stage

    The global players in the energy sector convened in Rotterdam last week for the 26th edition of the World Energy Congress (WEC). The venue was well chosen, wit [...]

    Read more

Of Interest

See archived entries

New equipment for the COMPASS tokamak in Prague

The powerful neutral beam injector that will take the COMPASS tokamak to new regimes. (Click to view larger version...)
The powerful neutral beam injector that will take the COMPASS tokamak to new regimes.
On 10 November, 2010, two trucks from the Siberian city of Novosibirsk rolled up to the COMPASS tokamak at the Institute of Plasma Physics in Prague. The trucks unloaded box after box of high-tech components that had been shipped from the Russian Budker Institute of Nuclear Physics. A team of experienced technicians and physicists arrived from the Institute one week later. Their mission? To assemble and commission two powerful neutral beam injectors that will allow plasmas in the COMPASS tokamak to reach temperatures ten times higher than previously achievable.

The Budker Institute of Nuclear Physics crafts neutral beam injectors for research centres all over the world, tailored each time to in-situ requirements. For COMPASS, the neutral beam injectors have been designed to deliver up to 300 kW of power to the plasma (one hundred times greater than the power of an electric oven) through a narrow aperture of 5 cm for as long as 0.3 sec. In addition, beam modulation—where the neutral beam is switched on and off in a rapid sequence—is planned for measuring plasma characteristics, by directly comparing phenomena inherent to the plasma with phenomena induced by interaction of the injected beam and the plasma.

In COMPASS, two configurations will be possible. Either the neutral beam injectors will deliver parallel beams to the plasma—maximizing the heating effect—or they will inject beams in opposite directions to balance the force momentum on the plasma and keep plasma rotation very low. This flexibility considerably increases the plasma research possibilities on the COMPASS tokamak.

At present, without the heating beams, the COMPASS tokamak can reach plasma temperatures of several million Kelvin. With the two new neutral beam injectors, we expect to reach 50 million Kelvin—a record both for the Czech fusion research and for the COMPASS tokamak.


return to the latest published articles