Anomalous transport in the simple torus

Results from a comparative study of simulations and experiments on plasma p rofiles and anomalous transport in a simple, magnetised plasma torus is pre sented. Under typical operating conditions the cross-field discharge curren t is classical and determines a hollow potential profile. The particle tran sport is always anomalous and mediated by electrostatic flute-mode turbulen ce. There is a universal critical density scale length for onset of the int erchange instability The average density gradient is slightly subcritical, and the power spectra of the potential fluctuations have approximately a li f dependence. These features are characteristic for systems exhibiting self -organized critical behaviour.