title: Design of a biplanar gradient coil using a genetic algorithm.
abstract: A biplanar z-gradient coil has been designed using a genetic algorithm, and its efficiency for producing a gradient along the axis of a solenoid magnet compared to that of a conventional Maxwell coil set. Coils of 21.8 cm by 20.9 cm area and 10 cm separation give 0.37 m Tm-1 A-1 with standard and maximum deviations of 2.6 and 13.1% of this value over an optimised cuboid region of 12 by 15 by 1.8 cm. The experimentally useable linear volume extends beyond this to 50% of the separation between the planes. Design data are also given for a transverse gradient set.
authors.affiliation: Herchel Smith Laboratory for Medicinal Chemistry, University of Cambridge School of Clinical Medicine, United Kingdom.
authors.forename: B J
authors.initials: BJ
authors.lastname: Fisher
authors.forename: N
authors.initials: N
authors.lastname: Dillon
authors.forename: T A
authors.initials: TA
authors.lastname: Carpenter
authors.forename: L D
authors.initials: LD
authors.lastname: Hall
mesh_terms: D000465:Algorithms; D004526:Efficiency; D004867:Equipment Design; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D008280:Magnetics; D008957:Models, Genetic; D008962:Models, Theoretical; D013499:Surface Properties