ELECTRON ENERGY DISTRIBUTION FUNCTION IN DIVERTOR REGION OF THE COMPASS TOKAMAK DURING NEUTRAL BEAM INJECTION HEATING (IWSSPP2016)
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Result code in IS VaVaI
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Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
ELECTRON ENERGY DISTRIBUTION FUNCTION IN DIVERTOR REGION OF THE COMPASS TOKAMAK DURING NEUTRAL BEAM INJECTION HEATING (IWSSPP2016)
Original language description
Předneseno na:n7th International Workshop and Summer School on Plasma Physics (IWSSPP 2016), Kiten,26.06.-02.07.2016,nThis 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). nAt 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. nThe dependence of the NBI heating power in divertor region was studied.n
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
BL - Plasma physics and discharge through gases
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů