DESIGN STUDIES OF A DIPOLE WITH ELLIPTICAL APERTURE FOR THE MUON COLLIDER STORAGE RING

The requirements and operating conditions for superconducting magnets used in a Muon Collider Storage Ring are challenging. About one third of the beam energy is deposited along the magnets by the decay electrons. As a possible solution an elliptical tungsten absorber could intercept the decay electrons and absorb the heat limiting the heat load on superconducting coils to the acceptable level. In this paper we describe the main design issues of dipoles with an elliptical aperture taking into consideration the field and field quality. The discussion is extended presenting a combined function magnet design. The temperature margin and the forces in the coils are presented as well.