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Numerical simulations of interchange turbulence in the Scrape-Off Layer areperformed in a regime relevant for a specific L-mode MAST (Mega AmpereSpherical Tokamak) discharge. Such a discharge was diagnosed with areciprocating arm equipped with a Gundestrup probe. A detailed comparison ofthe average and statistical properties of the simulated and experimental ionsaturation current is performed. Good agreement is found in the time averagedradial profile, in the probability distribution functions (PDFs) and inqualitative features of the signals such as the shape, duration and separationof burst events. These results confirm the validity of the simple interchangemodel used and help to identify where it can be improved. Finally, thesimulated data are used to assess the importance of the temperaturefluctuations on plasma potential and radial velocity measurements acquired withLangmuir probes. It is shown that the correlation between the actual plasmaquantities and the signal of the synthetic diagnostics is poor, suggesting thataccurate measurements of the temperature fluctuations are needed in order toobtain reliable estimates of the perpendicular fluxes.

Experimental and numerical characterisation of the turbulence in the Scrape-Off Layer of MAST