Particle-in-cell Simulations of Flush-Mounted Probes

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

Particle-in-cell Simulations of Flush-Mounted Probes

Popis výsledku v původním jazyce

In order to investigate plasma properties in the scrape-off layer, flush-mounted probes are frequently used in divertors or limiters. However, the presence of the magnetic field causes significant effects on the acquired I-V characteristics. This influence can be studied using Particle-in-Cell simulations. In this study, we use a cartesian 2D3V PIC code SPICE2 code to examine the dependencies of I-V characteristics on magnetic field grazing angle and magnitude and to relate them to known plasma parameters. Both flat and rounded probe tip geometry are investigated in the wide range of incident field line angles using the probe geometry based on the dedicated HFS limiter used on COMPASS tokamak. The I-V characteristics are analysed using a standard 3-parameter and 4-parameter procedures and the yielded values of Te and density are compared to input parameters. A semi-empirical rule for the slope of ion current is derived and can be used in analysis of experimental data.

Název v anglickém jazyce

Particle-in-cell Simulations of Flush-Mounted Probes

Popis výsledku anglicky

In order to investigate plasma properties in the scrape-off layer, flush-mounted probes are frequently used in divertors or limiters. However, the presence of the magnetic field causes significant effects on the acquired I-V characteristics. This influence can be studied using Particle-in-Cell simulations. In this study, we use a cartesian 2D3V PIC code SPICE2 code to examine the dependencies of I-V characteristics on magnetic field grazing angle and magnitude and to relate them to known plasma parameters. Both flat and rounded probe tip geometry are investigated in the wide range of incident field line angles using the probe geometry based on the dedicated HFS limiter used on COMPASS tokamak. The I-V characteristics are analysed using a standard 3-parameter and 4-parameter procedures and the yielded values of Te and density are compared to input parameters. A semi-empirical rule for the slope of ion current is derived and can be used in analysis of experimental data.

Druh

D - Stať ve sborníku

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

<a href="/cs/project/GAP205%2F11%2F2341" target="_blank" >GAP205/11/2341: Kontrola okrajových nestabilit plazmatu v tokamacích pomocí vnějších magnetických poruch</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

EPS2014:41st EPS Conference on Plasma Physics

ISBN

2-914771-90-8

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

"P1.041"-"P1.041"

Název nakladatele

European Physical Society

Místo vydání

Mulhouse

Místo konání akce

Berlin

Datum konání akce

23. 6. 2014

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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