Speaker
Description
The Linear Collider Facility (LCF) has been identified as a promising candidate for a future linear e+e− collider at CERN. The LCF would operate primarily at a centre-of-mass energy of 380 GeV using superconducting RF technology based on the International Linear Collider (ILC), providing access to both Higgs and top-quark physics, with intermediate stages at 90 and 250 GeV enabling precision studies at the Z pole and of Higgs production, respectively. One key design choice concerns the Final Focus System (FFS), for which both the ILC and Compact Linear Collider (CLIC) FFS are under consideration. The ILC FFS has a length of approximately 700 m and a final drift length L∗ of around 4 m, while the CLIC FFS reduces the system length to approximately 550 m with a longer L∗ of 6 m. While the CLIC FFS is more compact and allows a more favourable geometry at the machine-detector interface, it places more stringent requirements on chromaticity correction and aberration control. In this contribution, we present an updated CLIC-like FFS with improved aberration control, adapted for the LCF at 380 GeV, and compare its performance with the ILC FFS at the proposed LCF energy stages.