Bent superconducting solenoids with superimposed dipole fields

Superconducting solenoid magnets with superimposed dipole field have been proposed for the cooling channel for a future high luminosity muon collider. The magnets are typically bent into a 180° are with a centerline radius of about 0.5 m and an aperture of 0.3 to 0.4 m. They are characterized by having an on-axis solenoidal field of about 4 T with a 1 T superimposed dipole field. A cost-effective design is proposed, in which the dipole field is generated by tilting the winding planes of the solenoid coil. The magnetic and mechanical design of such magnets are presented