Optimization of large multiple coil systems for pulsed magnets
Résumé
Very high pulsed magnetic fields can be generated more economically using a system of multiple coils, with a high-energy, limited-power pulse generator providing the background field for a smaller inner coil, energized in its turn, but for a much shorter pulse duration, with a very high-power, limited-energy generator. Because of the increased number of parameters in the design of multi-coils, systematic insight into their mutual dependence is helpful in order to converge to an optimized design.
In this paper we will discuss strategies to determine the optimum choice for the design of inner- and outer-coil and how to optimize their design in relation to the type of pulse generator used. In particular, we will consider energy-limited capacitor banks and power-limited supplies. The approach will use scaling arguments and modeling tools as the 'Pulsed Magnet Design Software' (PMDS) package, developed at the Katholieke Universiteit Leuven and Huazhong University of Science and Technology.
Optimization of coil systems is demonstrated with the example of the successful 87 T pulsed dual-coil system in Dresden.