Počet záznamů: 1
Effect of the resonant magnetic perturbation on the plasma parameters in COMPASS tokamak's divertor region
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SYSNO ASEP 0508655 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Effect of the resonant magnetic perturbation on the plasma parameters in COMPASS tokamak's divertor region Tvůrce(i) Dimitrova, Miglena (UFP-V) ORCID
Cahyna, Pavel (UFP-V) RID
Peterka, Matěj (UFP-V) RID, ORCID
Hasan, E. (BG)
Popov, Tsv.K. (BG)
Ivanova, P. (BG)
Vasileva, E. (BG)
Pánek, Radomír (UFP-V) RID
Cavalier, Jordan (UFP-V) RID, ORCID
Seidl, Jakub (UFP-V) RID
Markovič, Tomáš (UFP-V) RID
Havlíček, Josef (UFP-V) RID, ORCID
Dejarnac, Renaud (UFP-V) RID, ORCID
Weinzettl, Vladimír (UFP-V) RID, ORCID
Háček, Pavel (UFP-V) RID, ORCID
Tomeš, Matěj (UFP-V)Celkový počet autorů 16 Číslo článku 012001 Zdroj.dok. Journal of Physics: Conference Series, FAIRNESS 2016, 742. - Bristol : IOP Publishing, 2016 - ISSN 1742-6588 Rozsah stran roč. 982, č. 1 (2018) Poč.str. 6 s. Forma vydání Online - E Akce 7th International Workshop and Summer School on Plasma Physics Datum konání 26.06.2016 - 02.07.2016 Místo konání Kiten Země BG - Bulharsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova tokamak ; COMPASS ; divertor Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Fluids and plasma physics (including surface physics) CEP LM2015045 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy 8D15001 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA16-24724S GA ČR - Grantová agentura ČR Institucionální podpora UFP-V - RVO:61389021 UT WOS 000454714800001 EID SCOPUS 85045621844 DOI 10.1088/1742-6596/982/1/012001 Anotace The 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. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2020 Elektronická adresa https://iopscience.iop.org/article/10.1088/1742-6596/982/1/012001/pdf
Počet záznamů: 1