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

Devynck, P.; Bonhomme, G.; Martines, E.; Stöckel, Jan; Van Oost, G.; Voitsekhovitch, I.; Adámek, Jiří; Azeroual, A.; Doveil, F.; Ďuran, Ivan; Gravier, E.; Gunn, J.; Hron, Martin

Number of the records: 1

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

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SYSNO ASEP	0029745
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Ostatní články
Title	Spatially resolved characterization of electrostatic fluctuations in the scrape-off layer of the CASTOR tokamak
Title	Charakterizace elektrostatické turbulence v okrajové oblasti tokamaku CASTOR s prostorovým rozlišením
Author(s)	Devynck, P. (FR) Bonhomme, G. (FR) Martines, E. (IT) Stöckel, Jan (UFP-V)_RID Van Oost, G. (BE) Voitsekhovitch, I. (FR) Adámek, Jiří (UFP-V)_{RID, ORCID} Azeroual, A. (FR) Doveil, F. (FR) Ďuran, Ivan (UFP-V)_{RID, ORCID} Gravier, E. (FR) Gunn, J. (FR) Hron, Martin (UFP-V)_{RID, ORCID}
Source Title	Plasma Physics and Controlled Fusion. - : Institute of Physics Publishing - ISSN 0741-3335 Roč. 47, č. 2 (2005), s. 269-280
Number of pages	12 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	tokamak ; plasma ; turbulence
Subject RIV	BL - Plasma and Gas Discharge Physics
R&D Projects	GA202/03/0786 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20430508 - UFP-V (2005-2011)
Annotation	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 ×B 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.
Workplace	Institute of Plasma Physics
Contact	Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975
Year of Publishing	2006

Number of the records: 1