Mechanical model for the FCC-ee interaction region

Abstract The Future Circular Collider FCC-ee aims at unprecedented luminosities to be obtained with the crab-waist collision scheme. In this paper we describe mechanical model of interaction region layout including its assembly procedure. After a discussion on requirements and constraints, present engineered design vacuum chamber cooling system, bellows, vertex outer tracker detectors their integration in carbon-fibre lightweight support structure that will also luminosity calorimeter.