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

  • Fusion world | A helium campaign kicks off at JET

    After achieving record-breaking results on the Joint European Torus during 2021 experiments with the high-performance fuel mix of deuterium and tritium, EUROfus [...]

    Read more

  • Coil winding table | Seven years of faithful service

    In November 2015, workers from the European contractor Sea Alp Engineering, an Italian company based in Turin, began installing a large circular structure at th [...]

    Read more

  • Image of the week | Down under

    It has been close to five months since the first vacuum vessel module was installed in the Tokamak pit. The view from above is by now familiar: a huge D-sha [...]

    Read more

  • On site | An annual reminder about safety

    ITER's Safety and Quality Department knows: you can never repeat an important message often enough. The second annual ITER Safety Day took place on 15 Septe [...]

    Read more

  • Top management | ITER Council appoints new Director-General

    Convening in an extraordinary session in Paris, the ITER Council has appointed Pietro Barabaschi as the next Director-General of the ITER Organization. Mr Barab [...]

    Read more

Of Interest

See archived entries

India signs two R&D contracts

The signature between ITER India and the American Continental Electronics Corporation marked the start for R&D on future radio frequency technology. (Click to view larger version...)
The signature between ITER India and the American Continental Electronics Corporation marked the start for R&D on future radio frequency technology.
The Indian Domestic Agency has signed two contracts for the development of the radio frequency sources forming part of ITER's ion cyclotron heating and current drive (IC H&CD) system. The contracts were signed with the American company Continental Electronics Corporation and with Thales Electron Devices, France.

The IC H&CD system is one of the major tools for achieving the plasma performances foreseen in ITER's operation scenarios. This system is designed to provide 20 MW into the plasma, at frequencies included in the band 40 MHz to 55 MHz. ITER India is in charge of the procurement of the radio frequency source subsystem and the corresponding Procurement Arrangement was signed in February 2010. A total of nine radio frequency sources will be provided: eight sources used for plasma operation, plus one spare.

For ensuring 20 MW power availability for plasma operation, 24 MW is required at the output of the transmitter at frequencies up to 65 MHz. As there is no unique amplifier chain able to meet the output power specifications, the layout consists of two parallel four-stage amplifier chains, with a combiner circuit on the output side. This kind of radio frequency source will be unique in terms of its stringent specifications and building a first of its kind is always a challenge.

The French company Thales Electron Devices is the second contract partner to develop the most reliable technology for building ITER's amplifier chain. (Click to view larger version...)
The French company Thales Electron Devices is the second contract partner to develop the most reliable technology for building ITER's amplifier chain.
Each amplifier chain is made of a wide band solid state amplifier cascaded to a three tube based tuned amplifier: a pre-driver, followed by a driver stage and a final stage. In this configuration, the final stage tubes have to achieve challenging power levels.

Only two suppliers worldwide are able to reach the target. In order to identify the best and most reliable technology for building this amplifier chain, R&D contracts were signed with both companies. Results are expected by the end of next year followed by the Preliminary Design Review.



return to the latest published articles