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A Simplified Approach to Simulate Quench Development in a Superconducting Magnet

  • Cross-sectional 2D models often represent a computationally efficient alternative to full 3D models, when simulating complex multi-physical magnet systems. However, especially for the case of self-protected, superconducting magnets, where the stored energy has to be dissipated within the magnet coils, the thermal diffusion and the quench development in all three dimensions become key aspects. In order to further improve the simulation of transients in 2D models, a new modelling method for simplified quench development along the direction of the transport current is introduced. The original 2D model is hereby utilized for modelling the thermal domain, and the electrical resistance of each turn is scaled by the estimated time-dependent fraction of quenched conductor. Furthermore, the turn to turn quench propagation following the electrical connections is implemented. The proposed approach allows a very computationally efficient and easy-to-implement calculation since the model is effectively two-dimensional while providing a good approximation of the coil resistance development with sufficient accuracy. In order to illustrate the proposed quench-propagation modelling approach, simulations are compared to experimental results for the case of a self-protected, superconducting Nb-Ti dipole magnet. In general, a very good agreement between measurements and simulations was achieved.

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Metadaten
Author:Marvin JanitschkeORCiD, Matthias MentinkORCiD, Federica Murgia, Dimitri Pracht, Emmanuele RavaioliORCiD, Arjan P. VerweijORCiD
URN:urn:nbn:de:bsz:960-opus4-35850
DOI:https://doi.org/10.25968/opus-3585
DOI original:https://doi.org/10.1109/tasc.2021.3059980
ISSN:1051-8223
Parent Title (English):IEEE Transactions on Applied Superconductivity
Publisher:Institute of Electrical and Electronics Engineers (IEEE)
Document Type:Article
Language:English
Year of Completion:2021
Publishing Institution:Hochschule Hannover
Release Date:2025/04/07
Tag:Quench propagation; accelerator magnet; quench protection; self-protected; superconducting coil
GND Keyword:Supraleitender MagnetGND; DiffusionswärmeGND; Widerstand <Elektrotechnik>GND; QuenchingGND; ComputersimulationGND
Volume:31
Issue:5
Article Number:4000905
Page Number:5
Institutes:Fakultät II - Maschinenbau und Bioverfahrenstechnik
DDC classes:621.3 Elektrotechnik, Elektronik
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International