Displacement Corrections in the Analysis of Mirnov Oscillations
نویسنده
چکیده
The in uence of the toroidal geometry, and the plasma column displacement, over the usual tokamak poloidal magnetic eld con guration was investigated for circular plasmas through a series of simulations. The results obtained clearly showed the existence of a change in phase modulation of the Mirnov signals, which are not usually considered when the magnetic signals are Fourier analyzed in the frame of cylindrical approximation, that is, by neglecting any possible toroidal e ect. Furthermore, if the occasional displacements of the plasma column in tokamaks are considered, some di erences on the mode composition are also observed. These discrepancies, however, do not seem to a ect the analysis of the magnetic signals as strongly as in the former case, when toroidal e ects are neglected.
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