The Reversed Field Pinch toward magnetic order: a genuine self-organization

Journal Article · Sat Nov 01 04:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3033714· OSTI ID:21251747

Cappello, S; Bonfiglio, D; Guo, S C; Alfier, A; Lorenzini, R ^[1]; Escande, D F ^[1]

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1. Consorzio RFX, Associazione EURATOM-ENEA sulla fusione, Padova (Italy)

During the last decade, experimental and theoretical results induced a change of paradigm for the Reversed Field Pinch, (RFP). Indeed, experiments in present generation devices back up the new theoretical understanding of this alternative configuration for magnetic confinement: the basic nature of the system can be described as a self-organized helical state corresponding to the nonlinear saturation of a kink-tearing mode. This perspective was somewhat anticipated by older pioneering 3D nonlinear MHD. Very importantly from a theoretical point of view and with respect to confinement properties, the existence of RFP equilibrium with perfectly conserved helical confining magnetic surfaces comes into play. This is at variance with the previous traditional idea of the RFP as a relaxed axis-symmetric state, which, by theoretical arguments, requires the action of turbulence to accomplish and to maintain relaxation. In this presentation we propose a summary and discussion of the achievements in this subject, including results from 3D nonlinear MHD simulations, related transport effects and present open issues. Major relevant experimental facts are also surveyed.

• OSTI ID: 21251747
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1069; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONFIGURATION
EQUILIBRIUM
MAGNETIC CONFINEMENT
MAGNETIC SURFACES
MAGNETOHYDRODYNAMICS
NONLINEAR PROBLEMS
PLASMA
REVERSE-FIELD PINCH
REVERSED-FIELD PINCH DEVICES
SIMULATION
TEARING INSTABILITY
TRANSPORT THEORY
TURBULENCE