Stabilization of tokamak ohmic discharges at the density limit by means of the ergodic divertor

The stabilization of both the ({ital m}=2, {ital n}=1) tearing mode and a detached plasma has been obtained with the use of the ergodic divertor in Tore Supra Ohmically heated discharges at the density limit and for low plasma pressure. This has allowed us, for the first time, to define and to check...

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Bibliographic Details
Published in:Physical review letters 1991-11, Vol.67 (19), p.2662-2665
Main Authors: VALLER, J. C, POUTCHY, L, MOHAMED-BENKADDA, M. S, EDERY, D, JOFFRIN, E, LECOUSTEY, P, PECQUET, A. L, SAMAIN, A, TALVARD, M
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CLOSED PLASMA DEVICES
DATA
DIVERTORS
ELECTRIC DISCHARGES
ELECTRIC HEATING
ERGODIC HYPOTHESIS
Exact sciences and technology
EXPERIMENTAL DATA
HEATING
HYPOTHESIS
INFORMATION
INSTABILITY
JOULE HEATING
NUMERICAL DATA
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
PLASMA DISRUPTION
PLASMA HEATING
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
RESISTANCE HEATING
STABILIZATION
TEARING INSTABILITY
THERMONUCLEAR DEVICES 700107 > Fusion Energy-- Plasma Research-- Instabilities
TOKAMAK DEVICES
Waves, oscillations, and instabilities in plasmas and intense beams
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Summary:The stabilization of both the ({ital m}=2, {ital n}=1) tearing mode and a detached plasma has been obtained with the use of the ergodic divertor in Tore Supra Ohmically heated discharges at the density limit and for low plasma pressure. This has allowed us, for the first time, to define and to check a discharge piloting strategy to prevent density-limit disruptions and to create a stable edge-radiating layer that dissipates 100% of the input power.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.67.2662