The Motional Stark Effect Diagnostic (MSE) is the main tool for the determination of the toroidal current density inside a Tokamak fusion plasma. During the analysis of structures in the MSE measurements, a central region in the plasma without current density and without confining poloidal magnetic field was found, a so-called 'current hole'. The study of 'current holes' is an important issue for predicting current profile evolution in next step fusion facilities like ITER, with high current diffusion time in scenarios with strong non-inductive current.
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The Motional Stark Effect Diagnostic (MSE) is the main tool for the determination of the toroidal current density inside a Tokamak fusion plasma. During the analysis of structures in the MSE measurements, a central region in the plasma without current density and without confining poloidal magnetic field was found, a so-called 'current hole'. The study of 'current holes' is an important issue for predicting current profile evolution in next step fusion facilities like ITER, with high current dif...
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