Real-time plasma equilibrium reconstruction in a Tokamak

The problem of equilibrium of a plasma in a Tokamak is a free boundary problem described by the Grad-Shafranov equation in axisymmetric configurations. The right hand side of this equation is a non linear source, which represents the toroidal component of the plasma current density. This paper deals...

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Bibliographic Details
Published in:Journal of physics. Conference series 2008-11, Vol.135 (1), p.012019
Main Authors: Blum, J, Boulbe, C, Faugeras, B
Format: Article
Language:English
Subjects:
Algorithms
Free boundaries
Optimization
Physics
Plasma currents
Plasma equilibrium
Real time
Tokamak devices
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Summary:The problem of equilibrium of a plasma in a Tokamak is a free boundary problem described by the Grad-Shafranov equation in axisymmetric configurations. The right hand side of this equation is a non linear source, which represents the toroidal component of the plasma current density. This paper deals with the real time identification of this non linear source from experimental measurements. The proposed method is based on a fixed point algorithm, a finite element resolution, a reduced basis method and a least-square optimization formulation.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/135/1/012019