Fast Ion Collective Thomson Scattering Diagnostic for ITER: Progress of Design

Søren Bang Korsholm, Henrik Bindslev, Vedran Furtula, Frank Leipold, Fernando Meo, Poul Michelsen, Susanne Michelsen, Mirko Salewski, Erekle Tsakadze

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch

    Abstract

    In the era of high power and burning plasma fusion experiments with significant populations of fast particles, the diagnosis of fast ion dynamics becomes an important topic. In ITER, populations of fast ions due to ICRH and NBI, as well as fusion born alphas will carry a significant fraction of the free energy of the plasma. This may affect instabilities and transport in the plasma. A key candidate for diagnosing confined fast ions in ITER is the technique of collective Thomson scattering (CTS). A fast ion CTS system with a probing frequency of 60 GHz has been proposed for ITER. Based on diagnostic experience from particularly TEXTOR and ASDEX Upgrade, work is now progressing towards a final design of a fast ion CTS diagnostic for ITER. The biggest challenge of the diagnostic design is the HFS receiver located in the restricted space behind the blanket modules. Calculations and a series of mock-up measurements have brought the design towards a four mirror quasi-optical solution. The development as well as the present design will be presented.
    Original languageEnglish
    Title of host publicationBurning Plasma Diagnostics : Proceedings
    EditorsF.P. Orsitto, G. Gorini, E. Sindoni, M. Tardocchi
    Number of pages497
    Place of PublicationMelville (US)
    PublisherAmerican Institute of Physics
    Publication date2008
    Pages118-122
    ISBN (Print)07-35-40507-3
    Publication statusPublished - 2008
    EventInternational Conference on Burning Plasma Diagnostics - Varenna, Italy
    Duration: 24 Sep 200728 Sep 2007

    Conference

    ConferenceInternational Conference on Burning Plasma Diagnostics
    CountryItaly
    CityVarenna
    Period24/09/200728/09/2007
    SeriesAip Conference Proceedings
    Number988
    ISSN0094-243X

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