Real time analysis of tokamak discharge parameters

Real Time Equilibrium Reconstruction for Control of the Discharge in the Diii–d Tokamak

Real-time Equilibrium Reconstruction in a Tokamak

Abstract. This paper deals with the numerical reconstruction of the plasma current density in a Tokamak and of its equilibrium. The problem consists in the identification of a non-linear source in the 2D Grad-Shafranov equation, which governs the axisymmetric equilibrium of a plasma in a Tokamak. The experimental measurements that enable this identification are the magnetics on the vacuum vesse...

Plasma models for real-time control of advanced tokamak scenarios

Abstract. An integrated plasma profile control strategy, ARTAEMIS, is being developed for extrapolating present-day advanced tokamak (AT) scenarios to steady state operation. The approach is based on semiempirical (grey-box) modeling. It was initially explored on JET, for current profile control only (D. Moreau, et al., Nucl. Fus. 48 (2008) 106001). The present paper deals with the generalizati...

Real-Time Control of a Tokamak Plasma Using Neural Networks

This paper presents results from the first use of neural networks for the real-time feedback control of high temperature plasmas in a tokamak fusion experiment. The tokamak is currently the principal experimental device for research into the magnetic confinement approach to controlled fusion. In the tokamak, hydrogen plasmas, at temperatures of up to 100 Million K, are confined by strong magnet...

Real time plasma equilibrium reconstruction in a Tokamak

Abstract. 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 measurem...