Enable Recite

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

  • Central solenoid | 1st delivery celebrated on both sides of the Atlantic

    Standing 18 metres tall at the very heart of the ITER Tokamak, the central solenoid will generate an intense magnetic field which, in turn, will induce an elect [...]

    Read more

  • Tooling | Radial beam fits just right

    When describing operations inside the ITER in the assembly theatre, one is invariably tempted to call up images from the realm of science fiction. How else to c [...]

    Read more

  • Fusion world | Curtain call for the COMPASS tokamak

    After 12 years of operation and 21,000 plasma shots, the Czech tokamak COMPASS ceased operation on 20 August 2021. The tokamak will now be disassembled to make [...]

    Read more

  • Engineering | US to deliver "tough" electronics to ITER

    ITER, a machine that will imitate the sun, will also mimic the sun's extreme environment: intense heat, strong magnetic fields and radiation. A team at US I [...]

    Read more

  • Image of the week | The lighthouse in the pit

    Like a lighthouse (without a beacon) the central column rises more than 20 metres above the floor of the assembly pit. The massive structure does not belong to [...]

    Read more

Of Interest

See archived entries

Neutral Beam Test Facility

EUROfusion becomes part of the team

A new Cooperation Agreement provides the legal framework for the EUROfusion consortium to send select experts, scientists and engineers to the ITER Neutral Beam Test Facility in Padua, Italy, and—by doing so—support the development of ITER's most powerful external heating system.

While routinely used on fusion devices, ITER neutral beam injection will be first-of-a-kind due to its scale, which imposes enhanced requirements—particle beams have to be much thicker, for example, and the particles have to be injected at faster speeds in order to reach the core of the plasma. Two bus-sized injectors will be installed on ITER, but before then component design and physics and technology issues will be explored at the ITER Neutral Beam Test Facility. (Click to view larger version...)
While routinely used on fusion devices, ITER neutral beam injection will be first-of-a-kind due to its scale, which imposes enhanced requirements—particle beams have to be much thicker, for example, and the particles have to be injected at faster speeds in order to reach the core of the plasma. Two bus-sized injectors will be installed on ITER, but before then component design and physics and technology issues will be explored at the ITER Neutral Beam Test Facility.
Two neutral beam injectors on ITER will deliver 33 MW of heating power to the ITER plasma—over half the external heating required.

ITER's chosen technology—the acceleration and neutralization of negative deuterium (D-) ions—will be tested and validated through the operation of two testbeds at the Neutral Beam Test Facility (NBTF) in Padua, Italy, where scientists will have the chance to test component design and explore physics and technology issues before installing the system on ITER. The facility's ITER-scale negative ion source, SPIDER, is already functioning; the prototype injector, MITICA, is under construction.
Europe has been closely involved in the development of radio-frequency-driven negative ion source technology from the start, and the ITER source is based on a radio-frequency-driven negative ion source that has been evolving over several generations of prototypes at the Max Planck Institute for Plasma Physics (IPP) in Garching, Germany.

Under the terms of a Cooperation Agreement signed with the ITER Organization and Consorzio RFX, the European Consortium for the Development of Fusion Energy (EUROfusion) can provide select experts from European labs—up to 14 professionals per year (PPY)—to work on the neutral beam project at ITER's facility in Padua. EUROfusion is also providing 6 PPY to support the development of the half-size negative ion source in Garching (ELISE).

For Deirdre Boilson, head of the Heating & Current Drive Division at ITER, EUROfusion has made a strong commitment. "The NBTF Facility is a necessary step in the realization of the ITER neutral beams, which is a most challenging endeavour. The injector components are technology intensive, with demanding requirements and first-of-a-kind performance. Full-scale prototype experiments are a must prior to implementation on ITER. We welcome the support of our European colleagues and experts in developing and operating the ITER facility."

The NBTF test facility has been a collaborative endeavour from the start, built through the support of the ITER Organization; the Italian government (test centre site, buildings, auxiliaries and power); Europe (all test bed mechanical components including beam sources and accelerators); Japan (high voltage components for the full-scale injector); and India (acceleration grid power supply for the ion source). Consorzio RFX, the host lab, is providing a large contribution to expertise.

Last year, the ITER Organization and Consorzio RFX concluded an agreement for the construction and operation of the ITER Neutral Beam Test Facility through the testing of prototype components—as well as later, when the facility serves as a testbed for ongoing performance enhancement. In that agreement, Article 45 provides for the invitation of "other entities in a position to further the mission and objectives of the NBTF project [...]"

ITER Director-General Bernard Bigot welcomed the news. "I am confident that with this new agreement and the enlarged team, we will achieve the desired objectives of SPIDER and MITICA and continue to reap the benefits of this type of collaboration, which draws upon the best of global expertise."

Read more about the ITER Neutral Beam Test Facility here.
See an announcement by EUROfusion here.



return to the latest published articles