Analysis of rotating mhd perturbations to identify disruptive phases in TCV tokamak

The presence of rotating MHD instability is often a clue of unhealthy plasma conditions (e.g., large NTM Islands, or impurity accumulation, et cetera), which may justify the early and safe termination of a discharge. However, a similar approach would lead to terminate also discharges that can be recovered. The application of advanced RT processing, like Singular Value Decomposition (SVD), to MHD signals can provide additional information helpful, in principle, to disentangle such ambiguity.