C. Trenkel et Cc. Speake, GEOMETRICAL OPTIMIZATION OF SUPERCONDUCTING LEVITATION SYSTEMS BASED ON THE COMPLETE MEISSNER EFFECT, Classical and quantum gravity, 13(11A), 1996, pp. 299-309
We analyse superconducting magnetic levitation systems where both the
suspended body and the field-generating conductors are perfectly diama
gnetic. We develop a method to find a spatial distribution of the wind
ings underneath a planar superconductor which maximizes the achievable
magnetic support field, for a given maximum field at the windings. Th
e basic method consists of tuning the horizontal and vertical held com
ponents according to the corresponding held enhancement factors at the
windings. Using customized windings of varying pitch, it appears that
improvements in lift force by factors of 2 or more are possible.