Michael Stephen Poole1,
1School of Information Technology and Electrical Engineering, University of Queensland, Brisbane, QLD, Australia; 2Institut de Mathematiques, Universite Paul Sabatier Toulouse 3, Toulouse, France; 3Department of Mathematics, Hong Kong Baptist University, Kowloon Tong, Hong Kong
Gradient and shim coils designed with minimum power or stored energy can possess regions of high current density. The maximum current density is included in the coil design process in this study to produce minimax current coils. These coils exhibit maximally spread wire patterns, reduced peak temperature and maximum efficiency for a given coil surface. An increase in inductance/resistance is observed for coils with considerably reduced maximum current density.