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A fast code using nonmagnetic measurements for RFX current and magnetic field profile reconstruction

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5 Author(s)
Desideri, D. ; Euratom-ENEA sulla Fusione, Consorzio RFX, Padova, Italy ; Zabeo, L. ; Bagatin, M. ; Chitarin, G.
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Fast identification techniques of the plasma internal magnetic structure are needed for the real time control of the plasma current distribution in magnetic confinement devices. In this paper, a fast identification code using plasma internal nonmagnetic measurements is proposed and applied to the reversed field pinch experiment. The identification tool is based on a force-free ideal magnetohydrodynamic equilibrium model, using a parametric radial profile for the magnetic field and current density. A set of constraints on the internal magnetic distribution are derived from the Faraday rotation data given by a five-chord polarimeter, assuming the plasma density as given by an interferometric diagnostic. The code execution time is about a few seconds

Published in:

Magnetics, IEEE Transactions on  (Volume:38 ,  Issue: 2 )

Date of Publication:

Mar 2002

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