Summary
This paper presents the three-dimensional mechanical engineering design of a 2-metre-long 20 T common-coil dipole magnet prototype, comprising four niobium-3-tin and six bismuth-2212 superconducting coils. The authors address significant challenges in stress management and coil preload application by employing an extended aluminium shell and split yoke assembly to minimise end effects and optimise stress distribution across coil sections. The design achieves an 11% operating margin on the load line at 4.2 K with peak field of 20.4 T at 14,700 A operating current.
UK applicability
This paper describes fundamental physics and engineering research in superconducting magnet design with potential applications in particle accelerator infrastructure; UK applicability depends on whether UK research institutions or laboratories are pursuing similar high-field magnet development programmes.
Key measures
Peak coil field (20.4 T), operating current (14,700 A), operating margin (11%), Lorentz forces (horizontal: 1562 t, vertical: 405 t, axial: 206 t), coil stress distribution
Outcomes reported
The study reports three-dimensional mechanical design and stress analysis of a 20 T common-coil dipole magnet prototype, with calculated Lorentz forces and optimised coil stress management solutions.
Topic tags
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