A note on the Radial Extent of LH wave ? tokamak SOL interaction

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

A note on the Radial Extent of LH wave ? tokamak SOL interaction

Popis výsledku v původním jazyce

The radial extent of Landau interaction of tokamak edge electrons with the lower hybrid (LH) antenna electric field is analyzed. The electron acceleration associated with the power absorption results in high power-flows along magnetic field lines towardtokamak vessel components causing their possible damage. It is therefore of some practical importance to understand the radial extent of the LH-generated fast electron population. The present-day understanding, based on 2-D PIC simulations in quiescent plasma, indicate a radial interaction zone of the order of a few millimeters adjacent to the grill mouth [1]. However, recent experimental results from retarding field analyzer measurements on Tore Supra (TS) have shown the existence of fast electrons asfar as a few centimeters from the grill mouth [1], which exhibit temporal intermittency at a rate comparable with the detachment rate of relatively hot and dense plasma ?blobs from the main body of the plasma.

Název v anglickém jazyce

A note on the Radial Extent of LH wave ? tokamak SOL interaction

Popis výsledku anglicky

The radial extent of Landau interaction of tokamak edge electrons with the lower hybrid (LH) antenna electric field is analyzed. The electron acceleration associated with the power absorption results in high power-flows along magnetic field lines towardtokamak vessel components causing their possible damage. It is therefore of some practical importance to understand the radial extent of the LH-generated fast electron population. The present-day understanding, based on 2-D PIC simulations in quiescent plasma, indicate a radial interaction zone of the order of a few millimeters adjacent to the grill mouth [1]. However, recent experimental results from retarding field analyzer measurements on Tore Supra (TS) have shown the existence of fast electrons asfar as a few centimeters from the grill mouth [1], which exhibit temporal intermittency at a rate comparable with the detachment rate of relatively hot and dense plasma ?blobs from the main body of the plasma.

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/GA202%2F07%2F0044" target="_blank" >GA202/07/0044: Nelineární jevy poblíž antén v tokamacích</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název statě ve sborníku

Contributed Papers 36th European Physical Society Conference on Plasma Physics

ISBN

2-914771-61-4

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

European Physical Society

Místo vydání

Sofia

Místo konání akce

Sofia

Datum konání akce

29. 6. 2009

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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