Fundamental Electromagnetic Configuration for Generating One-Directional Magnetic Field Gradients

In this article, electromagnet layouts are presented, which generate a magnetic field with magnitude gradient that does not vary significantly in horizontal plane but decreases monotonically the vertical height above magnet. Such one-direction is specific requirement for density separation (MDS), novel recycling technology combines ferrofluid to separate mixture of non-magnetic materials based on their mass density. We assembling first superconducting magnet be used application. contrast other technologies use ferrofluid, multiple products can separated single process step. First, idealized current distribution introduced produces such decays only one direction. This ideal approximated practical coil configurations, evaluated Fourier analysis derive an optimal cross-sectional layout flat racetrack coils. The concludes discussion effect winding pack thickness value system and peak inside pack. conclusions study applicable just MDS any application requires changes