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.