Speaker
Description
Designed to succeed the High-Luminosity Large Hadron Collider (HL-LHC), the Future electron-positron Circular Collider (FCC-ee) is a proposed next-generation collider focused on lepton collisions for high-energy physics experiments. Achieving ambitious design goals requires excellent control of the orbit and optics. Off-centre beam passage through the sextupoles results in additional focusing and defocusing, together with coupling due to feed-down effects. The sextupole BBA is considered as an alternative to the quadrupole BBA because it reduces both the dipole kicks in the magnet and the optics perturbations from feed-down effects by reducing the beam offset in the sextupole. Various approaches for the individual and parallel sextupole beam-based alignment (BBA) are considered and compared.
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