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The authors measure the losses of charged particles and heat via the electrons in the toroidal ℓ = 3 Saturn stellarator with large shear (θmax ≲ 0.25). From an analysis of the relationships derived they conclude that the pseudoclassical nature of the energy losses observed is due to the presence of drift modes in the plasma. The particle losses for shear θ < 0.05 are determined by the turbulence of the plasma, whereas at θ > 0.05 the diffusion both in magnitude and functional dependence matches the neoclassical theory.

A multicontact probe placed near the wall has been used to study the distribution of the divertor fluxes over the minor azimuth in stellarator and torsatron regimes of the Saturn machine. It has been found that the plasma flux towards the outer part of the torus is much higher than the flux measured along the direction to the inner part. The plasma fluxes are localized in the vicinity of the apexes of the magnetic surfaces and their azimuthal width near the wall does not exceed 1/18th of the vacuum chamber circumference.

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