Coupling of Magneto-Thermal and Mechanical Superconducting Magnet Models by Means of Mesh-Based Interpolation

Authors:
  • PBPascal Bayrasy
    Pascal Bayrasy
  • KWKlaus Wolf
    Klaus Wolf
  • BABernhard Auchmann
    Bernhard Auchmann
  • TGTina Griesemer
    Tina Griesemer
  • LBLorenzo Bortot
    Lorenzo Bortot
  • MPMarco Prioli
    Marco Prioli
  • ANAlejandro Manuel Fernandez Navarro
    Alejandro Manuel Fernandez Navarro
  • SSSebastian Schöps
    Sebastian Schöps
  • IGIdoia Cortes Garcia
    Idoia Cortes Garcia
  • AVArjan Verweij
    Arjan Verweij
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Abstract
In this paper we present an algorithm for the coupling of magneto-thermal and mechanical finite element models representing superconducting accelerator magnets. The mechanical models are used during the design of the mechanical structure as well as the optimization of the magnetic field quality under nominal conditions. The magneto-thermal models allow for the analysis of transient phenomena occurring during quench initiation, propagation, and protection. Mechanical analysis of quenching magnets is of high importance considering the design of new protection systems and the study of new superconductor types. We use field/circuit coupling to determine temperature and electromagnetic force evolution during the magnet discharge. These quantities are provided as a load to existing mechanical models. The models are discretized with different meshes and, therefore, we employ a mesh-based interpolation method to exchange coupled quantities. The coupling algorithm is illustrated with a simulation of a mechanical response of a standalone high-field dipole magnet protected with CLIQ (Coupling-Loss Induced Quench) technology.

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