Title :
Identification of RFX plasma shape from the electromagnetic probe signals
Author :
Bellina, F. ; Campostrini, P.P. ; Chitarin, G. ; Guarnieri, M. ; Stella, A. ; Trevisan, F.
Author_Institution :
ENEA, Padova, Italy
Abstract :
The paper presents the application and the first results of a plasma shape identification code used in the RFX experiment. This code has been specifically developed for machines provided with a stabilizing shell and with magnetic probes placed outside the vacuum vessel. In RFX, as in all the present-generation RFP machines, no steady-state magnetic configuration is reached, being the eddy currents in the vessel and in the stabilizing shell not negligible during the whole pulse duration. The new code, known as PLACID (Plasma Contour Identification) makes use of the information from the electromagnetic probes to estimate, by means of a filament current model, the currents in the vacuum vessel and in the stabilizing shell. In this way the solution to the magnetostatic problem of the determination of the magnetic flux surfaces outside the plasma is provided
Keywords :
fusion reactor design; nuclear engineering computing; plasma probes; reversed field pinch; PLACID; Plasma Contour Identification; RFX plasma shape; eddy currents; electromagnetic probe signals; filament current model; magnetic flux surfaces; magnetostatic problem; plasma shape identification code; present-generation RFP machines; pulse duration; stabilizing shell; vacuum vessel; Coils; Magnetic flux; Magnetostatics; Plasma confinement; Plasma devices; Plasma measurements; Probes; Shape measurement; Signal processing; Toroidal magnetic fields;
Conference_Titel :
Fusion Engineering, 1993., 15th IEEE/NPSS Symposium on
Conference_Location :
Hyannis, MA
Print_ISBN :
0-7803-1412-3
DOI :
10.1109/FUSION.1993.518321