POLOIDAL PROFILES OF THE PLASMA PARAMETERS IN L AND H MODES IN THE COMPASS TOKAMAKS DIVERTOR REGION (VEIT2017)

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

POLOIDAL PROFILES OF THE PLASMA PARAMETERS IN L AND H MODES IN THE COMPASS TOKAMAKS DIVERTOR REGION (VEIT2017)

Popis výsledku v původním jazyce

Předneseno na: 20th International Summer School Vacuum, Electron and Ion Technologies (VEIT2017), Sozopol, 25-29.09.2017.nThe poloidal profiles of the plasma parameters, i.e., the floating and plasma potentials, ion saturation current density, electron temperatures and densities and the parallel power flux density, were obtained by the 39 Langmuir divertor probes of the COMPASS tokamak in L- and H-modes. The probes were swept to measure the current-voltage probe characteristics. The first-derivative probe technique was used to process the data. The experiment was conducted during the same discharge while the plasma column was moving down to the divertor, so that the threshold for transition from L- to ohmic H-mode was reached. The poloidal profiles of the plasma parameters were different in the two regimes. The parallel power flux density and the electron temperature were studied more precisely in the case of NBI-assisted H-mode, a dependence on the plasma current was found.

Název v anglickém jazyce

POLOIDAL PROFILES OF THE PLASMA PARAMETERS IN L AND H MODES IN THE COMPASS TOKAMAKS DIVERTOR REGION (VEIT2017)

Popis výsledku anglicky

Předneseno na: 20th International Summer School Vacuum, Electron and Ion Technologies (VEIT2017), Sozopol, 25-29.09.2017.nThe poloidal profiles of the plasma parameters, i.e., the floating and plasma potentials, ion saturation current density, electron temperatures and densities and the parallel power flux density, were obtained by the 39 Langmuir divertor probes of the COMPASS tokamak in L- and H-modes. The probes were swept to measure the current-voltage probe characteristics. The first-derivative probe technique was used to process the data. The experiment was conducted during the same discharge while the plasma column was moving down to the divertor, so that the threshold for transition from L- to ohmic H-mode was reached. The poloidal profiles of the plasma parameters were different in the two regimes. The parallel power flux density and the electron temperature were studied more precisely in the case of NBI-assisted H-mode, a dependence on the plasma current was found.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů