A 2-D Finite-Element Model for Electro-Thermal Transients in Accelerator Magnets

Lorenzo Bortot; Bernhard Auchmann; Idoia Cortes Garcia; Alejandro Manuel Fernandez Navarro; Michal Maciejewski; Marco Prioli; Sebastian Schöps; Arjan Verweij

doi:10.1109/tmag.2017.2748390

arXiv · 1710.01187

A 2-D Finite-Element Model for Electro-Thermal Transients in Accelerator Magnets

Lorenzo Bortot·Bernhard Auchmann·Idoia Cortes Garcia·Alejandro Manuel Fernandez Navarro·Michal Maciejewski·Marco Prioli·Sebastian Schöps·Arjan Verweij

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Abstract

Superconducting accelerator magnets require sophisticated monitoring and means of protection due to the large energy stored in the magnetic field. Numerical simulations play a crucial role in understanding transient phenomena occurring within the magnet, and can, therefore, help to prevent disruptive consequences. We present a 2-D FEM model for the simulation of electro-thermal transients occurring in superconducting accelerator magnets. The magnetoquasistatic problem is solved with a modified magnetic vector potential formulation, where the cable eddy currents are resolved in terms of their equivalent magnetization. The heat balance equation is then investigated, and the relevant heat sources are discussed. The model implements a two-port component interface and is resolved, as part of an electrical circuit, in a cooperative simulation scheme with a lumped-parameter network.

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Lorenzo Bortot, Bernhard Auchmann, Idoia Cortes Garcia, Alejandro Manuel Fernandez Navarro, Michal Maciejewski, Marco Prioli, Sebastian Schöps, Arjan Verweij. 2017-12-05. A 2-D Finite-Element Model for Electro-Thermal Transients in Accelerator Magnets. https://doi.org/10.1109/tmag.2017.2748390

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