Determination of structure tilting in magnetized plasmas—Time delay estimation in two dimensions
- Department of Nuclear Techniques, Budapest University of Technology and Economics, Association EURATOM, Műegyetem rkp. 9., H-1111 Budapest (Hungary)
- MTA Wigner RCP, EURATOM Association, PO Box 49, H-1525 Budapest (Hungary)
- Institute of Energy and Climate Research-Plasma Physics, Forschungszentrum Jülich, Association EURATOM-FZJ, D-52425 Jülich (Germany)
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 et al.[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.
- OSTI ID:
- 22228025
- Journal Information:
- Physics of Plasmas, Vol. 20, Issue 6; Other Information: (c) 2013 EURATOM; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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