Overview of the FTU results

New ohmic high-density regimes (1.6 times the Greenwald density at Ip 0.5 MA) with peaked profile and H(97-L) ∼ 1.2 are accessed on FTU with Lithizated wall and compared with boronised and metallic wall operations. The space parameters for the existence of fishbone-like modes destabilized by supra-thermal electrons generated by LHCD is being studied. Precursor events, identified as m/n = 1/1 mode localized around r/a = 0.3, are already found with minimum q about 1 and LH power as low as 0.5 MW i.e., well below the threshold for the strong mode destabilization. Theory predicts the existence of new magnetic-island induced Alfven Eigenmodes (MiAE). The dependence of MiAE continuum accumulation point on mode number and magnetic island size is used to analysis FTU experimental data with the aim of demonstrating a novel magnetic island diagnostic. Disruption avoidance is obtained with ECRH localized at any of the magnetic islands produced by the MHD modes. 0.4 MW of absorbed ECRH power are sufficient to avoid disruptions at 0.5 MA (deposition at q = 2 surface) in agreement with calculations based on Rutherford equation. Metallic dust of micrometer size, characterized by hypervelocity (10 km/s) have been detected by Langmuir probes, the number of recorded events is in agreement with post mortem analysis. New oblique ECE and a refractometer diagnostics have been also tested. (author)