Structure of the controlled halo-current magnetic field in the T-10 tokamak |
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Authors: | N V Ivanov A M Kakurin |
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Institution: | 1.Russian Research Centre Kurchatov Institute,Moscow,Russia |
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Abstract: | In the T-10 tokamak, the magnetic field spatially resonant with a helical MHD perturbation is generated using the controlled
halo current supplied using a contact method in the scrape-off-layer plasma. This paper is concerned with studying the spatial
structure of the halo current and its magnetic field. For this purpose, the magnetic field of the halo current was measured
in one of the cross sections of the torus near the tokamak vacuum vessel wall. The spatial distribution of the magnetic field
as a function of the halo current configuration was calculated in the cylindrical approximation. The terms proportional to
the plasma pressure were disregarded. The configuration of the halo current and the spatial structure of its magnetic field
were determined by comparing the calculated and experimental results. |
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