Plasma potential evaluated by Ball pen and Langmuir probes in the COMPASS tokamak

0430541 - ÚFP 2015 RIV BG eng O - Ostatní výsledky
Dimitrova, Miglena - Popov, Tsv.K. - Kasilov, A. - Adámek, Jiří - Ivanova, P. - Hasan, E. - Vondráček, Petr - Horáček, Jan - Dejarnac, Renaud - Stöckel, Jan - Imríšek, Martin - Pánek, Radomír
Plasma potential evaluated by Ball pen and Langmuir probes in the COMPASS tokamak.
2014
Grant CEP: GA MŠMT(CZ) LM2011021; GA ČR(CZ) GAP205/12/2327
Institucionální podpora: RVO:61389021
Klíčová slova: Langmuir and Ball-pen probes * plasma potential * electron energy distribution functions * electron temperatura and density * first-derivative probe technique * COMPASS tokamak
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech

Předneseno na:6th International Workshop and Summer School on Plasma Physics (IWSSPP2014),Kiten,BG,30.06.-06.07.2014, The radial distribution of the main plasma parameters in the scrape-off-layer (SOL) of the COMPASS tokamak is measured during L and H-mode regimes by using both Langmuir and Ball-pen probes mounted on a horizontal reciprocating manipulator. Radial profiles of the plasma potential and the electron energy distribution functions (EEDF), i.e. electron temperatures and densities, are derived from measured Langmuir probe current-voltage characteristics by applying the first derivative probe technique (FDPT) and compared with the results from classical probe technique. Ball-pen probe measurements provides direct evaluation of the plasma potential with high temporal resolution. The derived results for plasma potential from Langmuir probe and Ball-pen probe are in a quantitative agreement.
Trvalý link: http://hdl.handle.net/11104/0235465