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Resistive Wall Mode Active Rotation in RFX-mod

The fundamental question of how the flow velocity of the background plasma can influence the motion of magneto-hydrodynamics instabilities and, in ultimate analysis, their stability is addressed. The growth of Resistive Wall Mode instabilities in toroidal confinement devices well represents one example of such a problem. In this paper we illustrate a new strategy that allowed, for the first time in a Reversed Field Pinch experiment, a fully controlled rotation of a non-resonant instability by means of a set of active coils and how the new findings compare with numerical modeling.