Preliminary Electromagnetic and Structural Analyses of the Conductors and Clamps of the DTT Current Feeders

Abstract

The Divertor Tokamak Test facility (DTT) is being constructed in the Research Centre of ENEA Frascati. This nuclear fusion device is devoted to tackle the power exhaust issue in the view of future fusion power plant. The conceptual design and the performances of the DTT superconducting magnet feeders, with NbTi cables, are evaluated based on coupled electromagnetic and structural analyses. We here present a preliminary structural assessment of the feeder clamps. We have considered the self-field condition and the higher force per unit length on feeder paths as evaluated from a 3D EM simulation. The stress state is evaluated by means of a 2D model with plane stress with thickness formulation. Further, the bolt dimension and class, together with the distance between two clamps, is provided in both self-field and maximum force per unit length conditions.