Abstract
A new configuration for the First Wall protection has been studied for the divertor phase. The design consists of a series of discrete poloidal protections, both for the inner wall as well as the outer wall. The effectiveness of this approach has been checked by analysing extreme cases of plasma configurations during vertical disruptions. This paper describes the design of the various poloidally discrete protections, ie the inner wall guard limiters (IWGL), the outer wall poloidal limiters, the protection of the disruption control coils, the protection of the top of the vacuum vessel (dump plates and mushroom tiles) and the outer wall water manifolds. The components have been dimensioned to take into account the halo current flowing between the plasma and the vacuum vessel wall through the components during a vertical disruption.
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