Modeling of 3D electromagnetic phenomena in TOKAMAK with typically distributed main and additional coils is not an easy business. Evaluated must be not only distribution of the magnetic field. but also forces acting in particular coils. Use of differential methods (such as FDM or FEM) for this purpose may be complicated because of geometrical incommensurability of particular subregion... https://hollandscountryclothinges.shop/product-category/horse-hoods/