Počet záznamů: 1  

Effect of the resonant magnetic perturbation on the plasma parameters in COMPASS tokamak's divertor region

  1. 1.
    SYSNO ASEP0508655
    Druh ASEPC - Konferenční příspěvek (mezinárodní konf.)
    Zařazení RIVD - Článek ve sborníku
    NázevEffect of the resonant magnetic perturbation on the plasma parameters in COMPASS tokamak's divertor region
    Tvůrce(i) Dimitrova, Miglena (UFP-V)
    Cahyna, Pavel (UFP-V) RID
    Peterka, Matěj (UFP-V) RID
    Hasan, E. (BG)
    Popov, Tsv.K. (BG)
    Ivanova, P. (BG)
    Vasileva, E. (BG)
    Pánek, Radomír (UFP-V) RID
    Cavalier, Jordan (UFP-V) RID
    Seidl, Jakub (UFP-V) RID
    Markovič, Tomáš (UFP-V) RID
    Havlíček, Josef (UFP-V) RID
    Dejarnac, Renaud (UFP-V) RID
    Weinzettl, Vladimír (UFP-V) RID
    Háček, Pavel (UFP-V) RID
    Tomeš, Matěj (UFP-V)
    Celkový počet autorů16
    Číslo článku012001
    Zdroj.dok.Journal of Physics: Conference Series, FAIRNESS 2016, 742. - Bristol : IOP Publishing, 2016 - ISSN 1742-6588
    Rozsah stranroč. 982, č. 1 (2018)
    Poč.str.6 s.
    Forma vydáníOnline - E
    Akce7th International Workshop and Summer School on Plasma Physics
    Datum konání26.06.2016 - 02.07.2016
    Místo konáníKiten
    ZeměBG - Bulharsko
    Typ akceWRD
    Jazyk dok.eng - angličtina
    Země vyd.GB - Velká Británie
    Klíč. slovatokamak ; COMPASS ; divertor
    Vědní obor RIVBL - Fyzika plazmatu a výboje v plynech
    Obor OECDFluids and plasma physics (including surface physics)
    CEPLM2015045 GA MŠk - Ministerstvo školství, mládeže a tělovýchovy
    8D15001 GA MŠk - Ministerstvo školství, mládeže a tělovýchovy
    GA16-24724S GA AV ČR - Akademie věd
    Institucionální podporaUFP-V - RVO:61389021
    UT WOS000454714800001
    EID SCOPUS85045621844
    DOI10.1088/1742-6596/982/1/012001
    AnotaceThe resonant magnetic perturbation (RMP) has proven to be a useful way to suppress edge-localized modes that under certain conditions can damage the device by the large power fluxes carried from the bulk plasma to the wall. The effect of RMP on the L-mode plasma parameters in the divertor region of the COMPASS tokamak was studied using the array of 39 Langmuir probes embedded into the divertor target. The current-voltage (IV) probe characteristics were processed by the first-derivative probe technique to obtain the plasma potential and the electron energy distribution function (EEDF) which was approximated by a bi-Maxwellian EEDF with a low-energy (4-6 eV) fraction and a high-energy (11-35 eV) one, the both factions having similar electron density. Clear splitting was observed during the RMP pulse in the low-field-side scrape-off-layer profiles of the floating potential U fl and the ion saturation current density J sat - these two quantities were obtained both by direct continuous measurement and by evaluation of the IV characteristics of probes with swept bias. The negative peaks of U fl induced by RMP spatially overlaps with the local minima of J sat (and n e) rather than with its local maxima which is partly caused by the spatial variation of the plasma potential and partly by the changed shape of the EEDF. The effective temperature of the whole EEDF is not correlated with the negative peaks of U fl, and the profile of the parallel power flux density shows secondary maxima due to RMP which mimic those of J sat.
    PracovištěÚstav fyziky plazmatu
    KontaktVladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975
    Rok sběru2020
    Elektronická adresahttps://iopscience.iop.org/article/10.1088/1742-6596/982/1/012001/pdf
Počet záznamů: 1