Abstract
The paper presents a numerical study on electrodynamic be-havior of the inter-pancake twin-box joints of the Poloidal Field (PF) coils of the ITER Magnet System. This work was carried out with the THELMA code, developed at the University of Bo-logna. The THELMA model was adapted to describe both the superconducting wires and the resistive saddle of the joint in a set of reference configurations representative of a set of exper-imental tests performed on a joint sample at the SULTAN fa-cility in Villigen, Switzerland. The model was applied to ana-lyze both the DC joint resistance measurements and the AC loss vs frequency curve, in order to obtain a full representation of the joint electromagnetic behavior. The paper reports a comparison between the numerical and experimental results and parametric studies on the impact of the main model pa-rameters on the loss vs frequency curve.
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