Analisi elettromagnetica tridimensionale delle teste delle bobine nel dipolo principale di LHC

The spacers placed at coil ends play an important role in the performance of superconducting coils, as their shape and location determine the mechanical stability of the conductors in the coil ends and the local field quality. The dipole end spacers are critical components due to their size and geometry, and they are difficult to be industrially series manufactured. In order to achieve the required production rate of the LHC main dipoles at an affordable price both the design, the production and the control have to be optimized. In this prospective a 3D model was created to reproduce the electromagnetic behavior of the dipole heads. Thanks to this tool it was possible to create a sensitivity map able to describe the effect of a geometric variation in the end spacers on the local field quality. A similar analysis was carried out to point out the geometric parameters critical for the quench performances of the magnet.