Počet záznamů: 1
ELECTRON ENERGY DISTRIBUTION FUNCTION IN DIVERTOR REGION OF THE COMPASS TOKAMAK DURING NEUTRAL BEAM INJECTION HEATING (IWSSPP2016)
- 1.
SYSNO ASEP 0461459 Druh ASEP O - Ostatní výsledky Zařazení RIV O - Ostatní Název ELECTRON ENERGY DISTRIBUTION FUNCTION IN DIVERTOR REGION OF THE COMPASS TOKAMAK DURING NEUTRAL BEAM INJECTION HEATING (IWSSPP2016) Tvůrce(i) Hasan, E. (BG)
Dimitrova, Miglena (UFP-V) ORCID
Havlíček, Josef (UFP-V) RID, ORCID
Bogár, Klára (UFP-V) ORCID
Stöckel, Jan (UFP-V) RID
Varju, Jozef (UFP-V) ORCID
Weinzettl, Vladimír (UFP-V) RID, ORCID
Popov, Tsv.K. (BG)
Komm, Michael (UFP-V) RID, ORCID
Dejarnac, Renaud (UFP-V) RID, ORCID
Háček, Pavel (UFP-V) RID, ORCID
Pánek, Radomír (UFP-V) RIDRok vydání 2016 Jazyk dok. eng - angličtina Země vyd. BG - Bulharsko Klíč. slova neutral beam injection heating ; plasma potential ; electron energy distribution function ; electron temperatura and density ; first-derivative probe technique Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech CEP LM2015045 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA16-25074S GA ČR - Grantová agentura ČR Institucionální podpora UFP-V - RVO:61389021 Anotace Předneseno na:
7th International Workshop and Summer School on Plasma Physics (IWSSPP 2016), Kiten,26.06.-02.07.2016,
This work presents the results from the swept probe measurements in the divertor region of the COMPASS tokamak in D-shaped, L-mode discharges, with toroidal magnetic field BT = - 1.15 T, plasma current Ip = -180 kA and varying line-average electron densities from 2 to 8x1019 m-3. Using the neutral beam injection (NBI) heating, the electron energy distribution function (EEDF) was studied before and during the application of the beam. The current-voltage characteristics data were processed using the novel first-derivative probe technique (FDPT). This technique allows to evaluate the plasma potential and the EEDF (respectively the electron temperatures and densities).
At low average electron density of 2x1019 m-3 the EEDF is bi-Maxwellian with low-energy electron population with temperatures 4-6 eV and high energy electron group 12-25 eV. With increasing the line-average electron density the electron temperatures decrease. Above 7x1019 m-3 line-average electron density the EEDF is found to be a Maxwellian with temperature 6-8.5 eV.
The dependence of the NBI heating power in divertor region was studied.
Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2017
Počet záznamů: 1