Approaching 100 T with wire wound coils

The European effort to develop nondestructive pulsed magnets for scientific research in fields up to 100 T is now well under way. Within the network of European magnet laboratories, two routes towards 100 T have emerged from an EC-sponsored design study. In this paper, the route using wire-wound coils will be described, this is based on technology available at the participating laboratories. For magnets driven by energy limited power sources (e.g. capacitor banks), coils with internal and external reinforcement will be developed, these are likely to consist of two or three concentric coils. With an energy source of order 10 MJ, the pulse duration will be of order 10 ms. For use with a power limited supply (e.g. generators), the magnet consists of typically up to ten coils that are energised separately to generate pulses with a 100 T/50 ms flat top using a 1 GW source. A series of test coils with gradually increasing peak field will be built and tested in order to optimize design, construction techniques and predictive computations.