Experimental study and simulation of W7-AS transient MHD modes

G. Pokol, G. Papp, G. Por, S. Zoletnik, A. Weller

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

Transient MHD modes present in pure ECRH W7-AS plasmas have been shown to be in correlation with transient transport events (ELM-like modes). Here the spatial structure of the individual transients is analyzed using short-time Fourier transform and continuous analytical wavelet transform based techniques. Processing of Mirnov coil data partly confirms the properties derived from earlier, simpler analyses. Theoretical explanation of the properties of these modes (spatial structure and rapid damping) is attempted by models based involving drift-Alfvén turbulence or shear Alfvén waves.

Original languageEnglish
Title of host publicationPlasma 2007 - Proceedings Intl. Conf. on Research and Applications of Plasmas
Subtitle of host publication4th German-Polish Conference on Plasma Diagnostics for Fusion and Applications
Pages215-218
Number of pages4
DOIs
Publication statusPublished - Apr 28 2008
EventInternational Conference PLASMA 2007 on Research and Applications of Plasmas: 4th German-Polish Conference on Plasma Diagnostics for Fusion and Applications - 6th French-Polish Seminar on Thermal Plasma in Space and Laboratory - Greifswald, Germany
Duration: Oct 16 2007Oct 19 2007

Publication series

NameAIP Conference Proceedings
Volume993
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherInternational Conference PLASMA 2007 on Research and Applications of Plasmas: 4th German-Polish Conference on Plasma Diagnostics for Fusion and Applications - 6th French-Polish Seminar on Thermal Plasma in Space and Laboratory
CountryGermany
CityGreifswald
Period10/16/0710/19/07

Keywords

  • Fusion
  • Mode number
  • Plasma
  • Stellarator
  • Transient MHD modes
  • W7-AS
  • Wavelet

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Pokol, G., Papp, G., Por, G., Zoletnik, S., & Weller, A. (2008). Experimental study and simulation of W7-AS transient MHD modes. In Plasma 2007 - Proceedings Intl. Conf. on Research and Applications of Plasmas: 4th German-Polish Conference on Plasma Diagnostics for Fusion and Applications (pp. 215-218). (AIP Conference Proceedings; Vol. 993). https://doi.org/10.1063/1.2909112