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

被引：24

作者：

Devynck, P ^{[1
]}

Bonhomme, G

Martines, E

Stöckel, J

Van Oost, G

Voitsekhovitch, I

Adámek, J

Azeroual, A

Doveil, F

Duran, I

Gravier, E

Gunn, J

Hron, M

机构：

[1] CEA, EURATOM Assoc, DSM, DRFC,Ctr Cadarache, F-13108 St Paul Les Durance, France

[2] Univ Henri Poincare, Vandoeuvre Les Nancy, France

[3] ENEA Fus, EURATOM Assoc, Consorzio RFX, Padua, Italy

[4] EURATOM, IPP CR, Inst Plasma Phys, Prague, Czech Republic

[5] State Univ Ghent, Dept Appl Phys, B-9000 Ghent, Belgium

[6] Univ Aix Marseille 1, Lab PIIM, Equipe Turbulence Plasma, F-13331 Marseille, France

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2005年 / 47卷 / 02期

关键词：

D O I：

10.1088/0741-3335/47/2/005

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

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 E-r x 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.

引用

页码：269 / 280

页数：12

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