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DOE OSTI · 2349104

Spin-Polarization Simulations for the Future Circular Collider $E^+E^-$ using BMAD

Wu, Y.·Barber, Desmond·Carlier, Felix·Gianfelice-Wendt, Eliana·Pieloni, Tatiana·van Riesen-Haupt, Léon
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Abstract

The high precision measurement of the centre-of-mass energy in the Future Circular Collider e+e- (FCC-ee) at Z and W energies can be realized through resonant spin depolarization utilizing transversely polarized beams. This requires a guaranteed sufficiently-high spin polarization in the presence of lattice imperfections. Investigations of the impact of misalignments on the equilibrium polarization are conducted using analytical and Monte-Carlo spin simulations with Bmad. Potential optimization schemes to ensure high polarization using orbit bumps have been explored.

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Wu, Y., Barber, Desmond, Carlier, Felix, Gianfelice-Wendt, Eliana, Pieloni, Tatiana, van Riesen-Haupt, Léon. 2023-09-26. Spin-Polarization Simulations for the Future Circular Collider $E^+E^-$ using BMAD. https://doi.org/10.18429/jacow-ipac2023-mopl055

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