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Tests have been performed at Fetmilab on 1.5" magnetic length model SCC collider dipoles using both bipolar and unipolar ramp cycles. Hysteresis en&y loss due to superconductor and iron magnetization and eddy currents is measured and compared 85 a function of various tamp parameters. Additionally, magnetic field measurements have been perfotmed for both unipala and bipolar ramp cycles. Measurements such as these will be used to estimate the heat load during collider injection for the SSC High Energy Booster dipoles.

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The quench behaviors of 10 model dipole magnets for the Superconducting Super Collider have been &n&d. Horisontelly split yoke, vertically split yoke and the latest 50 mm diameter design were compared in the quench cheracteristics. The excitation results showed e good progress of the R&D program. SSC magnets ten now be built with no training to the required Aeld of 0.65 T at 4.3 If.