Fast Eddy Current Simulation in Thick Split Cylinders of Finite Length Induced by Coils of Arbitrary Geometry

Hector Sanchez-Lopez¹, Michael Poole¹, Limei Liu¹, Stuart Crozier¹

In this paper we presented a new and fast eddy current simulation method. The approach is valid for currents induced in thick and split cylinders of finite length induced by coils of arbitrary geometry. The method divides thick conducting axially split/continues cylinders into thin layers (thinner than the skin depth) and expresses the current density on each as a normalized Fourier series. The coupling between each mode with every other is modeled with an inductive network method calculated in Fourier space. In this way, the eddy currents induced in realistic cryostat surfaces by coils of arbitrary geometry can be simulated.