DESIGN AND ANALYSIS OF HIGH-FIELD QUASI-CONTINUOUS MAGNETS

Pulsed magnets of 60 tesla or more with a flat-top of 100 ms (quasi-co ntinuous) are among the user facilities to be provided hy the NHMFL. T he design of such magnets is constrained by available materials and th ermal recycle time. The design path discussed here tailors materials a nd current densities of independent concentric coils. The progressive design steps are illustrated by a specific example of an eight-coil, 6 0T magnet. In the preliminary design stage closed form calculations of magnetic, structural, thermal, and electrical circuit behavior are us ed to achieve a practical design that meets initial requirements. Desi gn refinement incorporates finite element analyses and test results on materials, fabrication and prototypes. Higher fields are possible wit hout large changes.