Coupled Axial and Transverse Currents Method for Finite Element Modelling of Periodic Superconductors

• DOI: 10.48550/arxiv.2404.09775
• Publication Date: 2024-04-15
• Authors: Julien Dular; Fredrik Magnus; Erik Schnaubelt; Arjan Verweij; Mariusz Woźniak
• Keywords: Accelerator Physics (physics.acc-ph); 0103 physical sciences; FOS: Physical sciences; Physics - Accelerator Physics; 01 natural sciences

In this paper, we propose the Coupled Axial and Transverse currents (I) (CATI) method, as an efficient accurate finite element approach for modelling electric magnetic behavior of periodic composite superconducting conductors. The method consists a pair two-dimensional models coupled via circuit equations to account conductor geometrical periodicity. This allows capture three-dimensional effects with leads significant reduction in computational time compared conventional models. After presenting detail, verify it by comparison reference models, focussing on its application twisted multifilamentary strands. particular, show that CATI captures transition from uncoupled filaments, calculation interfilament coupling constant. We then illustrate capabilities generating detailed loss map magnetization curves given strand types range external transverse field excitations, without transport current.