Dependence of core turbulence on the discharge parameters in T-10 and its correlation with transport

Small scale turbulence was investigated on T-10 with multipin Langmuir probes and correlation reflectometry. In the entire plasma, six types of turbulence were distinguished, four of which were observed in the plasma core. A numerical computer model was developed to investigate the turbulence structure in detail. Three types of turbulence were simulated by the model. The measured turbulent radial particle flux is poloidally highly asymmetric. The absolute value of the flux agrees with the experimental value. The turbulence parameters depend strongly on the influx rate of the working gas. It is observed that a high level of quasi-coherent turbulence corresponds to high confinement regimes while a high level of low frequency turbulence corresponds to low confinement regimes. (author). 19 refs, 10 figs