AbstractThe development activity of superconducting magnets at KfK began in the late sixties with small solenoids. Early in the seventies magnets for accelerators, solenoids for laboratory research and magnets for ore separation and energy storage including superconducting switches were investigated. In the midst of the seventies, development of midsize and large fusion magnet systems started beginning with a six coil torus TESPE of medium size followed by the EURATOM LCT coil within the Large Coil Task (LCT) under the auspices of the International Energy Agency IEA. A conductor development programme for toroidal field (TF) coils within the frame of the ITER/NET project was performed as well as for a poloidal field (PF) coil. A PF model coil POLO with about 3 m average diameter is in construction. The performance of TOSKA, a facility for the test of large forced flow coils, is now being improved for further tests relevant to large fusion magnets.