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High resolution Thomson scattering on the COMPASS tokamak - extending edge plasma view and increasing repetition rate

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    SYSNO ASEP0489514
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleHigh resolution Thomson scattering on the COMPASS tokamak - extending edge plasma view and increasing repetition rate
    Author(s) Bílková, Petra (UFP-V) RID
    Böhm, Petr (UFP-V) RID
    Aftanas, Milan (UFP-V) RID
    Šos, Miroslav (UFP-V) ORCID
    Havránek, Aleš (UFP-V) ORCID
    Šesták, David (UFP-V) RID
    Weinzettl, Vladimír (UFP-V) RID, ORCID
    Hron, Martin (UFP-V) RID, ORCID
    Pánek, Radomír (UFP-V) RID
    Article numberC01024
    Source TitleJournal of Instrumentation. - : Institute of Physics Publishing - ISSN 1748-0221
    Roč. 13, č. 1 (2018)
    Number of pages10 s.
    Publication formPrint - P
    ActionInternational Symposium on Laser-Aided Plasma Diagnostics (LAPD2017) /18./
    Event date24.09.2017 - 28.09.2017
    VEvent locationPrague
    CountryCZ - Czech Republic
    Event typeWRD
    Languageeng - English
    CountryGB - United Kingdom
    KeywordsPlasma diagnostics - interferometry ; spectroscopy and imaging ; Trigger concepts and systems (hardware and software)
    Subject RIVBL - Plasma and Gas Discharge Physics
    OECD category2.11 Other engineering and technologies
    R&D ProjectsGA14-35260S GA ČR - Czech Science Foundation (CSF)
    8D15001 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    LM2015045 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    Institutional supportUFP-V - RVO:61389021
    UT WOS000422899200007
    EID SCOPUS85041453963
    DOI10.1088/1748-0221/13/01/C01024
    AnnotationThe Thomson scattering (TS) diagnostic system on the COMPASS tokamak consists of separate collection optics for core and edge plasmas. Till now, the adverse orientation of the viewport available for the edge TS limited the investigated plasma scenarios to those, where H-mode plasma pedestal was possible to be observed. The vacuum vessel port has been recently modified and directed more to the plasma edge. To bridge the time for designing and manufacturing a new lens, the so far used edge TS collection lens was tilted and the fibre bundles rearranged to comply with the new geometry. However, the full potential of the new port is utilized only by the newly designed and manufactured lens. Comparison of performance of the collection lenses before and after the viewport modification is presented. Apart from the edge collection system upgrade, the laser system was extended by two lasers with parameters similar to the original two, thus increasing the repetition rate of the TS system to 120 Hz or allowing to obtain four profiles with tight timing in order to measure fast transient events in the plasma.
    WorkplaceInstitute of Plasma Physics
    ContactVladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975
    Year of Publishing2019
Number of the records: 1  

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