Speaker
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 mock-up that includes thin, lightweight, actively cooled beam pipes and a compact, low-mass vertex detector. Both elements are supported via bellows on a composite carbon-fibre cylindrical structure. This mock-up 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 first prototypes of the beam pipes have been fabricated. This paper will present the corresponding cooling-system measurements performed with water and paraffin, together with experimental results on the air-cooling capability of the vertex detector. The current status of the project, the initial measurement results, and future developments will be discussed.
| In which format do you inted to submit your paper? | LaTeX |
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