Final design and construction progress for CEBAF's cold iron quadrupoles

The cold iron, cryostable, superconducting, large aperture magnets will operate over a decade of pole field excitation, from 0.2 T up to 2.1 T. The authors present a description of the modifications and changes to these magnets that have occurred. The use of a three-dimensional magnetostatic program, as a means of quality control for these changes, and a description of the structural modifications to the cryostat are included. The final expected magnetic performance as modeled with the program is listed for the superconducting quadrupoles. As modifications and manufacturing details have manifested, workable solutions have been implemented that preserve both the magnetic and mechanical specifications as well as keep to the delivery schedule. The current status of the project is presented.<
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