Identification of the structure of large-scale MHD perturbations in a tokamak from the Mirnov signals

Paper presents algorithm to process signals of MHD-diagnostics magnetic probes enabling to identify MHD-mode structure in case of plasma toroidal configuration. Algorithm differs from these applied now for tokamaks and is more simple and efficient in contrast to them. The algorithms foils down to plot a space analytical signal applying the Hilbert transformation on the basis of signals from magnetic probes at the selected moment of time. The derived phase and amplitude dependences automatically take account of toroidal distortions and enable to identify number and amplitude of MHD-instability mode. The algorithm was tried for both test signals and real signals of T-10 MHD-diagnostics. The algorithm may be applied when analyzing single-mode MHD- instabilities of a pinch