Coils with coaxial return paths are used to generate transverse
The present paper describes optimization of MFG coils magnetic field gradients. This paper describes optimization of such with coaxial return paths by the method of simulated annealcoils by the method of simulated annealing, a method known to ing which is known to be able to find the global minimum be able to find the global minimum of a function. The adaptive of a function (8). A family of coils with 8-16 building simulated annealing (ASA) program has been analyzed and apblocks was optimized. plied to optimization of a family of coils with 8-16 building blocks, each carrying equal current. Positions of the blocks along the longi-EXPERIMENTAL tudinal axis of the coils were optimized. A new subclass of coils is proposed; the diameter of return paths of this subclass of coils Adaptive Simulated Annealing is not fixed but may be varied. The new coils provide greater Simulated annealing (SA) is a well known and widely gradient uniformity than those for which only positions of the used method of finding the global minimum of a function blocks are optimized. All optimized coils should find applications (9). It has been applied with great success to problems in in high-precision and high-resolution imaging and spectroscopic many diverse areas, including manufacturing of integrated experiments.