Electromagnetic turbulent structures: A ubiquitous feature of the edge region of toroidal plasma configurations

M. Spolaore, N. Vianello, I. Furno, D. Carralero, M. Agostini, J.A. Alonso, F. Avino, R. Cavazzana, G. De Masi, A. Fasoli, C. Hidalgo, E. Martines, B. Momo, A. Scaggion, P. Scarin, S. Spagnolo, G. Spizzo, C. Theiler, M. Zuin

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Abstract

Electromagnetic features of turbulent filaments, emerging from a turbulent plasma background, have been studied in four different magnetic configurations: the stellarator TJ-II, the Reversed Field Pinch RFX-mod, a device that can be operated also as a ohmic tokamak, and the Simple Magnetized Torus, TORPEX. By applying an analogous diagnostic concept in all cases, direct measurements of both field-aligned current density and vorticity were performed inside the filament. The inter-machine comparison reveals a clear dependence of the filament vorticity upon the local time-averaged E×B flow shear. Furthermore, a wide range of local beta was explored allowing concluding that this parameter plays a fundamental role in the appearance of filament electromagnetic features.
Original languageEnglish
Article number012310
Pages (from-to)-
JournalPhysics of Plasmas
Volume22
Issue number1
DOIs
Publication statusPublished - 1 Jan 2015
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Spolaore, M., Vianello, N., Furno, I., Carralero, D., Agostini, M., Alonso, J. A., ... Zuin, M. (2015). Electromagnetic turbulent structures: A ubiquitous feature of the edge region of toroidal plasma configurations. Physics of Plasmas, 22(1), -. [012310]. https://doi.org/10.1063/1.4906869