Winding Configurations Studies for the EFDA Dipole Test Facility EDIPO

Several different types of windings can be adopted to generate the magnetic field required for the EDIPO (Efda DIPOle) test facility. Apart from the so-calledcos thetas winding configuration, which is most compacted but hardly applicable for large, rectangular apertures, other configurations have been studied within the framework of the EDIPO conceptual design. These configurations, bulkier than the cos thetas winding, offer advantages in the manufacturing as well as in the peak stresses and insulation reliability. The aim of this paper is to review the results of these studies considering alternatives to the cos thetas winding that generate the desired dipole magnetic field by means of planar (1) or tilted head (2) racetrack coils sets. The comparison among the different winding configurations is carried out on the basis of different cost indexes (such as the winding volume, peak field, magnetic energy etc.) as well as for different winding engineering current densities.