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Fast measurements of the electron temperature in divertor region of the COMPASS tokamak using ball-pen probe

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    SYSNO ASEP0453933
    Document TypeC - Proceedings Paper (int. conf.)
    R&D Document TypeConference Paper
    TitleFast measurements of the electron temperature in divertor region of the COMPASS tokamak using ball-pen probe
    Author(s) Adámek, Jiří (UFP-V) RID, ORCID
    Seidl, Jakub (UFP-V) RID
    Pánek, Radomír (UFP-V) RID
    Komm, Michael (UFP-V) RID, ORCID
    Vondráček, Petr (UFP-V) RID, ORCID
    Stöckel, Jan (UFP-V) RID
    Source TitleEPS 2015:42nd European Physical Society Conference on Plasma Physics, 39E. - Mulhouse : European Physical Society, 2015 - ISBN 2-914771-98-3
    Pagesp4.101-p4.101, p4.101
    Number of pages4 s.
    Publication formOnline - E
    ActionEPS 2015 Conference on Plasma Physics/42./
    Event date22.06.2015-26.06.2015
    VEvent locationLisbon
    CountryPT - Portugal
    Event typeEUR
    Languageeng - English
    CountryPT - Portugal
    Keywordsplasma ; tokamak
    Subject RIVBL - Plasma and Gas Discharge Physics
    R&D ProjectsGA15-10723S GA ČR - Czech Science Foundation (CSF)
    LM2011021 GA MŠk - Ministry of Education, Youth and Sports (MEYS)
    Institutional supportUFP-V - RVO:61389021
    EID SCOPUS84979703315
    AnnotationThe electron temperature in divertor regions of present day devices is typically measured by swept Langmuir probes or triple probe technique. However, the measurement of its evolution during ELM filaments requires high temporal resolution, which has not been achieved by these techniques yet. Alternative option how to determine the electron temperature with high time resolution is to use direct measurements of the plasma and floating potentials. The electron temperature is consequently determined from the difference of both potentials normalized by the proper coefficient for specific gas and magnetic field. The floating potential is routinely measured by Langmuir probe and the plasma potential can be directly measured by ball-pen probe (BPP). Recently, a new array of BPPs and dome-shaped Langmuir probes was installed also in a divertor target of the COMPASS tokamak.
    WorkplaceInstitute of Plasma Physics
    ContactVladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975
    Year of Publishing2016
Number of the records: 1