A number of superconducting coils wound with multifilamentary Nb3Sn or V3Ga wires has been developed. The large majority of those had an inner diameter of about 50mm and a central magnetic field over 10T, and some of them has already been put on the market. But as far as high field coils with an inner diameter in excess of 100mm are concerned, there exist only a few examples. The former is generally a solenoidal close packed coil manufactured by the wind-and-react method, and the latter is mainly a pancake coil constructed from prereacted conductors.
Superconducting coils wound with multifilamentary compound wires will be developed further towards the aim of achievements of higher fields in large volume. It is therefore important to analyze the state-of-art and clarify the problems.
