Determination of structure tilting in magnetized plasmas - Time delay estimation in two dimensions

Dávid Guszejnov, Attila Bencze, Sándor Zoletnik, Andreas Krämer-Flecken

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Time delay estimation (TDE) is a well-known technique to investigate poloidal flows in fusion plasmas. The present work is an extension of the earlier works of Bencze and Zoletnik [Phys. Plasmas 12, 052323 (2005)] and Tal [Phys. Plasmas 18, 122304 (2011)]. From the prospective of the comparison of theory and experiment, it seems to be important to estimate the statistical properties of the TDE based on solid mathematical groundings. This paper provides analytic derivation of the variance of the TDE using a two-dimensional model for coherent turbulent structures in the plasma edge and also gives an explicit method for determination of the tilt angle of structures. As a demonstration, this method is then applied to the results of a quasi-2D Beam Emission Spectroscopy measurement performed at the TEXTOR tokamak.

Original languageEnglish
Article number062303
JournalPhysics of Plasmas
Volume20
Issue number6
DOIs
Publication statusPublished - Jun 1 2013

ASJC Scopus subject areas

  • Condensed Matter Physics

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