Abstract
The paper aims to define the structural behavior of the ST40 Inner Vacuum Chamber (IVC2) under the action of electromagnetic loads from a previously analysed plasma disruption scenario, namely an Upward Vertical Displacement Event (UVDE) scenario. This spherical tokamak is owned by Tokamak Energy Ltd, and it is the highest field device of its kind. The considered loads are obtained from a previous electromagnetic analysis [1] and interpolated on the structural model. Indeed, the study represents the second and final part of the IVC2 electromagnetic and structural behavior characterization. The maximum load due to eddy current and the maximum load generated by halo current (occurring in two different time steps) are studied in two separated analyses. These were carried out considering the entire ST40 model with high degree of detail, allowing to accurately approximate its real behavior and to extrapolate the stress and deformation conditions on all the device elements. Specifically, the completeness of the model has guaranteed to study the global and the local stress state generated on the IVC2, on its supports and on all the components that weigh on it.
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