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Effect of the Resonant Magnetic Perturbation on the Plasma Parameters in Divertor Region of the COMPASS Tokamak (IWEP2015)
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SYSNO ASEP 0453336 Document Type O - Others R&D Document Type Others Title Effect of the Resonant Magnetic Perturbation on the Plasma Parameters in Divertor Region of the COMPASS Tokamak (IWEP2015) Author(s) Dimitrova, Miglena (UFP-V) ORCID
Cahyna, Pavel (UFP-V) RID
Popov, Tsv.K. (BG)
Hasan, E. (BG)
Vasileva, E. (BG)
Ivanova, P. (BG)
Marinov, S. (BG)
Costea, S. (BG)
Markovič, Tomáš (UFP-V) RID
Peterka, Matěj (UFP-V) RID, ORCID
Stöckel, Jan (UFP-V) RID
Dejarnac, Renaud (UFP-V) RID, ORCID
Imríšek, Martin (UFP-V) RID
Háček, Pavel (UFP-V) RID, ORCID
Havlíček, Josef (UFP-V) RID, ORCID
Pánek, Radomír (UFP-V) RIDYear of issue 2015 Language eng - English Country BG - Bulgaria Keywords Resonant Magnetic Perturbation ; divertor probes ; plasma potential ; electron energy distribution function ; electron temperatura and density ; first-derivative probe technique Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects LM2011021 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFP-V - RVO:61389021 Annotation Předneseno na:11th International Workshop on Electric Probes in Magnetized Plasmas (IWEP),Sozopol, BG, 16-19.09.2015, This work discusses the application of Resonant Magnetic Perturbations (RMPs) in the COMPASS tokamak in Ohmic D-shaped discharges, with toroidal magnetic field BT = 1.15 T, plasma current Ip = 170 kA and line-average electron density ne = 5×1019 m−3. In order to study the effect of RMPs on the plasma parameters in the divertor region with high spatial resolution, the strike-points were swept radially across 39 Langmuir divertor probes during a shot. The current-voltage characteristics data were processed using the novel first-derivative technique. This technique allows one to evaluate the plasma potential and the electron energy distribution function (EEDF), or, subsequently, the electron temperatures and densities. It has been found that in the vicinity of the inner and outer strike points of the divertor, that EEDF is bi-Maxwellian, with a low-energy electron Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2016
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