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

TJ-II: Influence of magnetic configuration on filament dynamics (view source)

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 . Characterize filaments and evaluate filament propagation models, already tested in tokamaks.
 . Describe and understand the effect of topologic features (e.g. islands, different curvature and connection lengths, etc.) to filament characteristics.
-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>, 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) Radially and poloidally separated <math>I_{sat}</math> measurements to carry out correlation-based analysis of filament shape and velocity.
-b) Identical probeheads with similar layouts in both manipulators to provide equivalent filament measurements in regions with different curvatures.
-c) The best possible characterization of <math>n_e</math> and <math>T_e</math> profiles at the edge and SOL regions.
-d) Repeat experiments with a magnetic configuration featuring long connection lengths for several cm. after the LCFS.
 == International or National funding project or entity ==