Latest results from JET

JET tokamak performance has been progressively raised, culminating in operation at the full design level of 5 MA plasma current in a toroidal field at 3.4 T. the plasma current, position, shape and line-average electron density are controlled by feed-back systems. By glow discharge cleaning in H 2/methane mixtures, the interior of the vessel has been coated with carbon. This reduces the fraction of power radiated