Negative edge plasma currents in the SINP tokamak |
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Authors: | RAMESH NARAYANAN A N SEKAR IYENGAR |
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Institution: | (1) Department of Electrical Engineering, University of California at Los Angeles, Los Angeles, CA, USA |
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Abstract: | A tokamak plasma discharge having an increase in duration accompanied with enhanced runaway electron flux has been experimentally
studied in this paper. The discharges have been obtained by controlling the applied vertical magnetic field (BvapplB_{\rm{v}}^{\rm{appl}}) to below a critical value. Such discharges have been observed to have ‘negative edge plasma currents’, detected using an
internal Rogowskii coil (IRC). We have tried to correlate the runaway behaviour with the negative edge plasma currents and
have explained that these observations are a result of beam plasma instabilities. |
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