Spatially resolved characterization of electrostatic fluctuations in the scrape-off layer of the CASTOR tokamak

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F05%3A00029745" target="_blank" >RIV/61389021:_____/05:00029745 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Spatially resolved characterization of electrostatic fluctuations in the scrape-off layer of the CASTOR tokamak

Original language description

The poloidal distribution of turbulence in the scrape-off layer (SOL) of the CASTOR tokamak is studied by means of a ring of 32 electric probes covering the whole perimeter of the poloidal cross section. Analysis of floating potential fluctuations in a SOL created in the top part of the machine by shifting the plasma downwards reveals a dominant periodic structure that propagates poloidally in the direction of the Er xB drift. Its poloidal mode number is found to be equal to the local safety factor q. Correlation and pulse propagation analyses show that this high m mode is a signature of a single long flute-like structure that is aligned with the magnetic field and snakes around the torus several times before terminating on the limiter.

Czech name

Charakterizace elektrostatické turbulence v okrajové oblasti tokamaku CASTOR s prostorovým rozlišením

Czech description

Charakter turbulence v okrajovém plazmatu tokamaku CASTOR byl studován za pomocí 32 elektrických sond, které zajišťovaly měření po celém obvodu poloidálního průřezu plazmatu. Analýza fluktuací plovoucího potenciálu ukázala vznik periodické struktury, která se šířila poloidálně v souhlasu s driftem ExB a jejíž poloidální mód byl roven lokální hodnotě bezpečnostního faktoru.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

<a href="/en/project/GA202%2F03%2F0786" target="_blank" >GA202/03/0786: 3D structure of the edge turbulence and its control on the Castor tokamak</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2005

Confidentiality

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

Name of the periodical

Plasma Physics and Controlled Fusion

ISSN

0741-3335

e-ISSN

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Volume of the periodical

47

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

269-280

UT code for WoS article

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EID of the result in the Scopus database

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