Quadrupole magnets for the SSC collider

A 40-mm-bore 211-T/m quadrupole magnet has been designed and tested at Lawrence Berkeley Laboratory. There are 8 coils of 30 strand cable arranged in two layers in a cos 2 theta distribution, supported by 18-mm-thick collars, preassembled into 146-mm-long packs, and rigidly aligned in a cold-iron yoke. The design, construction details, and test results are given for three 1-m models and the first 5-m model. >