°ÄÃÅÁùºÏ²Ê¸ßÊÖ

Subscribe options

Select your newsletters:

Please enter your email address:

@

Your email address will only be used for the purpose of sending you the °ÄÃÅÁùºÏ²Ê¸ßÊÖ Organization publication(s) that you have requested. °ÄÃÅÁùºÏ²Ê¸ßÊÖ 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 °ÄÃÅÁùºÏ²Ê¸ßÊÖ Organization.

For more information, see our Privacy policy.

News & Media

Latest °ÄÃÅÁùºÏ²Ê¸ßÊÖ Newsline

  • Fusion supply chain | A glimpse into the future for commercial fusion reactors

    Most of the USD 7 billion in investment in private fusion initiatives has gone to companies that are building devices from the ground up. But recently, another [...]

    Read more

  • Outreach | °ÄÃÅÁùºÏ²Ê¸ßÊÖ @ October science festivals

    Every October, before schools pause for two weeks of holiday, towns and cities in France open their municipal spaces to scientific experts of all stripes who ar [...]

    Read more

  • Image of the week | °ÄÃÅÁùºÏ²Ê¸ßÊÖ Director-General visits Russia

    The °ÄÃÅÁùºÏ²Ê¸ßÊÖ Director-General was in Russia last week, meeting with stakeholders and holding technical meetings with colleagues in Moscow and Saint Petersburg. As [...]

    Read more

  • Image of the Week | Sector 5 is on its way

    The first vacuum vessel sector produced in Europe travelled last week between Monfalcone, Italy, and the French port of Fos-sur-Mer. The 440-tonne component had [...]

    Read more

  • Anniversary | °ÄÃÅÁùºÏ²Ê¸ßÊÖ Document Management system turns 20

    Whatever its nature, every large project generates huge numbers of documents. And when project collaborators operate from different countries, as was the case f [...]

    Read more

Of Interest

See archived entries

Taking the electrons' temperature

In °ÄÃÅÁùºÏ²Ê¸ßÊÖ, scientists will use over 50 diagnostic systems to accurately "read" the plasma and furnish information that is important to its control, evaluation and optimization. All seven °ÄÃÅÁùºÏ²Ê¸ßÊÖ Domestic Agencies are involved in the development and procurement of these systems, some of which will have to be installed and operational at the time of the project's First Plasma in 2025.

Unboxed, installed, tested and ready for experiments: the prototype Fourier Transform Spectrometer at the °ÄÃÅÁùºÏ²Ê¸ßÊÖ India lab. (Click to view larger version...)
Unboxed, installed, tested and ready for experiments: the prototype Fourier Transform Spectrometer at the °ÄÃÅÁùºÏ²Ê¸ßÊÖ India lab.
As part of its contributions to °ÄÃÅÁùºÏ²Ê¸ßÊÖ diagnostics, the Indian Domestic Agency will be supplying several sub-systems of electron cyclotron emission (ECE) diagnostic systems, designed to measure local electron temperature with high spatial and temporal resolution. One of these—a Fourier Transform Spectrometer—will be used in particular to measure the power loss from the °ÄÃÅÁùºÏ²Ê¸ßÊÖ plasma due to ECE radiation and to study the non-thermal electrons in the plasma.

R&D and experimental activities are currently underway at a dedicated °ÄÃÅÁùºÏ²Ê¸ßÊÖ India laboratory in Gandhinagar (western India). A prototype of the fast-scanning Fourier Transform Spectrometer (FTS), based on requirements specified by °ÄÃÅÁùºÏ²Ê¸ßÊÖ India, was manufactured by Blue Sky Spectroscopy Inc., Canada. This prototype has been installed at the °ÄÃÅÁùºÏ²Ê¸ßÊÖ India laboratory where post-installation acceptance tests have been carried out and found satisfactory.

Based on a polarizing Michelson interferometer (70-1000 GHz), this fast-scanning Fourier Transform Spectrometer also consists of a cryo-cooled, dual-channel Tera-Hertz radiation measurement detector system. Experiments will be carried out to test attenuation in transmission line components; the results obtained will be instrumental in providing input for the design of an ultra-wideband (70-1000 GHz) transmission line for the °ÄÃÅÁùºÏ²Ê¸ßÊÖ ECE diagnostic system.


return to the latest published articles