Pulsed magnets with curved shape for FAIR

Abstract

The Italian Institute of Nuclear Physics (INFN) is performing a RD 2) Once cured, the coil can be handled in a simple and safe way for the following manufacturing operations (collaring, insertion in the iron yoke, ...). Since the initial design stage, in order to simplify the construction, we chose a single layer coil, mechanically supported mainly by the collars and partially by the iron yoke. This lay-out, fully acceptable from a design point of view, allows focusing the problematic of the construction on the crucial aspects related to the coil curvature and the peculiarity of the cored cable. As result of these basic choices and after a dedicated magnetic design activity, a 5 block lay-out was chosen. The winding is mechanically supported by a 30 mm thick collar of high strength austenitic steel with very low magnetic permeability. The iron lamination is mechanically coupled to the collared coil in a way to give no further coil pre-stress but to limit the collared coil deformation during magnetic energization. HHH-2008 PROCEEDINGS