Magnetic properties of iron yoke laminations for SSC dipole magnets

The authors examine the magnetic properties for the iron used in the SSC (Superconducting Super Collider) yoke laminations so that the accelerator tolerance can be met. The accelerator requirements for field quality specify a tolerance on the variation in the central field. At machine injection the variation in field is attributed to coercivity, H/sub c/. Requirements on the magnitude and the variation of H/sub c/ are presented. At the 6.65-T operating field the variation in the saturation magnetization dominates the magnetic tolerance for the iron.<
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