Speaker
Description
Since the last FCC Week conference, the layout of the FCC tunnel has been further optimized to provide a more favourable placement in the Geneva Basin.
Compared to the layout used in the Conceptual Design Report, the new tunnel layout now features a slightly smaller circumference of 91 km, but is compatible with four experimental insertions.
In this presentation, we present the latest layout and beam optics for the FCC-ee collider ring, adapted to the new tunnel layout and with four interaction points.
Based on input from studies on collective instabilities, the arc cell layout and IR optics were modified and changes will be summarised in this talk.
The parameters for the new layout, the dynamic aperture, and next steps will be discussed.
