Title :
Electron Pressure and Transport Analysis During QSH States in RFX-mod
Author :
Fassina, A. ; Alfier, A. ; Agostini, Marco ; Auriemmal, F. ; Brombin, M. ; Franz, P. ; Lorenzini, R. ; Marrelli, Lionello ; Martines, E. ; Spizzo, G. ; Zanca, P.
Author_Institution :
CONSORZIO RFX, Padua, Italy
Abstract :
In this paper, the pressure behavior is characterized for helical states in the Reversed Field eXperiment-mod plasmas; using the helical coordinates as a reference frame to match data coming from different diagnostics, pressure profile variations have been correlated to magnetic topology changes in plasma. The use of helical frame to integrate diagnostics is also exploited as a tool to identify changes in the electronic heat transport, within a single shot or a reduced shots ensemble, confirming via 1-D and 2-D power balance models the improvement in the plasma performances.
Keywords :
plasma magnetohydrodynamics; plasma transport processes; reversed field pinch; 1D power balance model; 2D power balance model; QSH states; RFX-mod; Reversed Field Experiment-mod plasmas; electron pressure; electronic heat transport; helical coordinates; helical states; magnetic topology changes; pressure profile variations; reference frame; transport analysis; Heating; Plasma measurements; Plasma temperature; Temperature distribution; Temperature measurement; Toroidal magnetic fields; Electron temperature; Thomson scattering (TS); energy transport; reversed field pinch (RFP);
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2012.2224871