TJ-II: Influence of magnetic configuration on filament dynamics: Difference between revisions

In a previous characterization of the boundary of TJ-II  <ref>T. Kobayashi, U. Losada, B. Liu et al.,  Nuclear Fusion 59, 044006 (2019)</ref><ref>B.Ph. van Milligen, J.H. Nicolau, B. Liu et al., Nucl. Fusion 58 026030 (2018)</ref>, sufficient data for a preliminary evaluation of filaments was gathered <ref> G. Grenfell et al., to be submitted </ref>. Form this first analysis a number of additional requirements were established for a complete characterization of filaments, including:

a) In a first day of operation, ECRH and NBI plasmas in standard configuration would be probed replicating previous discharges by Kobayashi et al. In this ocasion, both probes would be used to characterize filaments across the SOL in their respective positions and to measure <math>n_e</math>, <math>\phi_f</math> and <math>T_e</math> profiles to the innermost posible position. Time permitting, polarization experiments could be attempted as well. ''Simultaneously, the GPI system would be used in a slow setting to provide a broad evaluation of <math>n_e</math> and <math>T_e</math> in the edge region and in a fast setting to characterize filamentary structures in the SOL <ref>E. de la Cal and The TJ-II Team 2016 Nucl. Fusion 56 106031</ref>.''