Filaments in the edge confinement region of TJ-II

The Tj-Ii Team, B.Ph. Van Milligen, J.H. Nicolau, B. Liu, G. Grenfell, U. Losada, B.A. Carreras, L. García, C. Hidalgo

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Abstract

Floating potential measurements from two remote reciprocating probes in the plasma edge region of the TJ-II stellarator are analyzed using the transfer entropy, revealing the spatial dimensions and propagation properties of filamentary structures. The results are corroborated by performing simulations with a resistive MHD model and analyzing data from synthetic diagnostics. The transfer entropy captures the rotation of the filaments and allows the calculating of their rotation velocity. This deduced velocity was compared to the (known) poloidal velocity of the plasma and showed a relatively good agreement.
Original languageEnglish
Article number026030
Pages (from-to)-
JournalNuclear Fusion
Volume58
Issue number2
DOIs
Publication statusPublished - 2018
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Tj-Ii Team, T., Van Milligen, B. P., Nicolau, J. H., Liu, B., Grenfell, G., Losada, U., Carreras, B. A., García, L., & Hidalgo, C. (2018). Filaments in the edge confinement region of TJ-II. Nuclear Fusion, 58(2), -. [026030]. https://doi.org/10.1088/1741-4326/aa9db6