Speakers
Description
The FCC-ee interaction region incorporates the crab-waist collision scheme to achieve unprecedented luminosity. This approach combines nano-beam focusing at the interaction point with a large horizontal crossing angle, which in turn requires a compact and sophisticated machine–detector interface layout.
To assess the feasibility of this advanced design, INFN and CERN have jointly launched an R&D programme to construct a full-scale mockup that includes thin, lightweight, actively cooled beam pipes, a mockup of a compact low-mass vertex detector and a mockup of the luminosity monitor (LumiCal). All beampipe elements are supported via bellows on a composite carbon-fibre cylindrical structure, that also holds the vertex and the LumiCal. This mockup complements the existing 3D CAD models and finite-element simulations, enabling an experimental validation of key components—such as the beam pipes and vertex cooling systems—tested under realistic thermal loads.
The main objective of the mockup is to validate the integration and assembly procedures of all the elements, particularly the routing of the services.
We will discuss the status of the project, the main issues found and the future steps.