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Studies runaway discharges in the small Brazilian Tokamak TBR-1. Reproducible runaway discharges provided by low plasma density; Experiment setup; Use of Rogowski coils to measure the toroidal plasma current and vertical field current; Typical time profiles of plasma parameters in the runaway discharges.

Discusses the results of numerical calculations of Alfven wave absorption for the experimental conditions foreseen for the Tokamak Chauffage Alfven wave heating experiment in Brazil. Effect of toroidal mode coupling on the power deposition of Global Alfven Wave eigenmodes; Power deposition close to the plasma boundary.

Investigates the plasma rotation in toroidal devices with circular cross-sections. Dependence of magnetic axis curvature and torsion on the longitudinal coordinate and magnetic field ripples; Analysis of the ion poloidal velocity in the Pfirsch-Schluter regime.

Describes the magnetic Mirnov coil measurement system for the study of disruption dynamics in tokamaks. Design features of the system; Reduction of the level of asymmetrical electromagnetic noises; Main sources of measurement errors.