At LBL, we have designed, constructed, and tested four short (lm) models and six full-size (5m) models of the Superconducting Super Collider (SSC) main-ring 5 meter focusing quadrupole magnet (21 1 Teskdmeter). The results of this program are herein summarized.

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-··Six 5-m-long prototype quadrupole magnets have been built and cold-tested at Lawrence Berkeley Laboratory for the Superconducting Super Collider. Each of the magnets contained instrumentation to monitor the mechanical performance of the magnets during assembly and cOld-testing. In addition, the instrumentation was used along with physical measurements as aids during magnet assembly. Quantities measured include coil pressures during assembly, cooldown, and magnet ener~ization: axial thermal contraction of the magnets during cooldown; and axial force transmitted to the magnet end-vlates. For the most part, mechanical measurements have proven repeatable and agree well with analysis.

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