Mechanical design of the interaction region of the Future Circular Collider e+ e− and support structural optimization

We describe the vacuum chamber of the Future Circular Collider e+ e- interaction region, the conceptual design of the bellows and the lightweight structure called Support Tube. We also present a study on the structural optimization of the support structure. The aim is to optimize the structure to reduce the mass, maintaining the stiffness needed. Finite element analysis is used to develop a detailed numerical model considering complex geometries, material properties, and loading conditions. The study seeks to identify design improvements using optimization algorithms, such as Solid Isotropic Material with Penalization, Generative Design and Lattice approach.