A single layer coil superconducting magnet for SSC

The superconducting magnet under consideration for the proposed Superconducting Super Collider (SSC) uses a two layer coil geometry and is optimized for 6.6 T central field. In this paper the authors assess if it is possible to design a dipole having a realistic single layer coil configuration, using a cable having the same size as that used in the present SSC outer layer coil, can achieve a central field of about 6 T. The affirmative answer assumes a superconductor current density approaching the best achieved thus far in production, close-coupled cold iron with at most a very thin collar, a high but not unreasonable current density in copper at quench, and operation below 4.2 K. The authors describe the cable used in this design. They discuss the optimization procedure of the iron shape, particularly in the aperture region to minimize the effects of iron saturation. They outline the design of a realistic single layer coil geometry. Finally they discuss various operating parameters from the quench protection point of view