LHC Interaction Region Upgrades and the Machine–Experiment Interface

Schemes for increasing the luminosity delivered to the ATLAS and CMS experiments at the LHC, based on the implementation of modified or additional inner triplet quadrupoles and/or dipoles close to the interaction points, are being developed and result in the need to upgrade the interaction regions around Point 1 and Point 5. This paper presents some of the challenges for the experiments and for the LHC Collider resulting from such schemes and provides some suggestions for further studies.