Design and fabrication of a 14 T, Nb3Sn superconducting racetrack dipole magnet

Most accelerator magnets for applications in the field range up to 10 T uti lize NbTi superconductor and a cosine theta coil design. For fields above 1 0 T, it is necessary to use Nb3Sn or other strain sensitive superconductors and other coil geometries that are more compatible with these materials. T his paper describes our recent efforts to design a series of racetrack coil magnets that will provide experimental verification of an alternative magn et design philosophy, with the near-term goal of reaching a field level of approximately 14 T. The conductor and fabrication issues relevant to buildi ng high field, racetrack dipoles utilizing Nb3Sn superconductor and a wind and react approach will also be discussed.