Speaker
Description
We present lattice designs for a rapid cycling synchrotron (RCS) chain for a 10 TeV parton center-of-momentum (pCM) muon collider sited at Fermilab. A conventional RCS relies on only iron dominated, ramped field magnets that track beam momentum. To overcome the limited maximum fields of these ramped magnets, superconducting, fixed field magnets can be interleaved with the ramped field magnets to achieve higher average magnetic fields while retaining the high ramp rates achievable with iron dominated magnets. Local excursions resulting from the hybrid bending scheme are accounted for in aperture requirements and partially mitigated by subdividing hybrid bends. Excursions resulting from the mismatch between intermittently ramped beam momentum (occurring in RF sections) and continuously ramped magnetic field are also included in aperture requirements and RF sections are distributed around the ring to limit there magnitude. High level lattice parameters of each ring have been selected based upon these and other considerations.
Funding Agency
This manuscript has been authored by employees of Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
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