Design and A. C. Loss Considerations for the 60 mm Dipole Magnet in the High Energy Booster
The baseline design for the SSC High Energy Booster (HEB) has dipole bending magnets with a 50 mm aperture. A recent dynamic aperture study for the High Energy Booster (HEB) suggests that an increased aperture dipole magnet (DM) is desirable. Two cost neutral options for a 60 mm aperture HEBDM design are investigated. Field transfer function, field harmonics, and relative cost impact for these designs are presented. An analysis of the cryogenic heat load due to A. C. Losses generated in the HEB ramp cycle are also reported. Included in this analysis are losses from superconductor hysteresis, yoke hysteresis, strand eddy currents, and cable eddy currents. The A. C. Loss impact of 2.5 μm vs. 6 μim filament conductor will be presented. Superconducting proximity effect is also considered for 2.5 μm filament conductors.
KeywordsDipole Magnet Critical Current Density Filament Conductor Eddy Current Loss Coupling Loss
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