Developments in the experimental interaction regions of the High Energy LHC

The High Energy LHC (HE-LHC) aims to collide 13.5 TeV protons in two high luminosity experiments and two low luminosity experiments. In the following, the recent updates in the two high luminosity experimental interaction regions (EIR) of the HE-LHC will be illustrated. In this update the $\beta^*$ was increased from 0.25 m to 0.45 m to reduce beam-beam effects, while keeping the luminosity goal. On top of the triplet optics designed to achieve this, this paper will present energy deposition driven separation dipole designs, optics solutions for the matching section and dispersion suppressors as well as studies involving the integration into the lattice options. In particular it will outline geometric considerations as well as results from dynamic aperture studies.