Analysis of Electrodynamic Transients in the ITER PF Joints

The paper presents a numerical study on electrodynamic behavior 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 Bologna. The THELMA model was adapted to describe both the s...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2022-06, Vol.32 (4), p.1-5
Main Authors: Breschi, Marco, Cavallucci, Lorenzo, Ribani, Pier Luigi, Gauthier, Florent
Format: Article
Language:English
Subjects:
AC losses
cable in conduit conductor (CICC)
Coils
Computational modeling
Copper
Electromagnetic properties
fusion magnets
ITER magnet system
joints
Legged locomotion
Mathematical models
PF cable
Power cables
Resistance
Superconducting cables
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Summary:The paper presents a numerical study on electrodynamic behavior 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 Bologna. 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 experimental tests performed on a joint sample at the SULTAN facility in Villigen, Switzerland. The model was applied to analyze 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 parameters on the loss vs frequency curve.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2021.3136499