Summary
This technical paper presents finite element modelling of a bismuth-based high-temperature superconductor (Bi-2212) insert coil being developed at Fermilab for next-generation hybrid accelerator magnets. The work addresses the mechanical vulnerability of Bi-2212 Rutherford cables to Lorentz forces whilst maintaining high critical currents in strong magnetic fields, combining two external niobium-tin layers with two internal HTS layers. The FEM analysis characterises the stress state in HTS strands under operational loads, contributing to the U.S. Magnet Development Program's efforts to extend magnet performance beyond conventional superconductor technology limits.
UK applicability
This research is primarily relevant to particle accelerator development and materials science communities rather than to UK agricultural or food systems practice. The findings may have indirect application to UK-based accelerator physics programmes at institutions such as the Science and Technology Facilities Council, but are not applicable to farming, soil health, or nutrition outcomes.
Key measures
Stress-strain response; critical current (IC); Lorentz forces; magnetic field exposure; finite element model (FEM) predictions of HTS stress distribution in coil strands
Outcomes reported
The study reports magnetic and mechanical finite element analysis of a Bi-2212 cosine-theta insert coil designed for hybrid accelerator magnets, estimating stress states in superconducting strands under combined magnetic and mechanical loads.
Topic tags
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