Protons Beyond the LHC Injectors Upgrade Project

The Large Hadron Collider (LHC) Injectors Upgrade (LIU) project is implementing major changes during the second long shutdown (LS2) across the injectors complex. The main aim of the project is to improve the performance of the accelerator chain for the production of LHC beams. Nevertheless, the non-LHC beams are also expected to benefit from the upgrades. This report summarises the current intensity limitations of the different beams, machine, and simulation studies that predict the performance reach after LIU, together with the proposed strategies for the best exploitation of the accelerator complex. In particular, intensity limitations of the proton beams for the ISOLDE Radioactive Ion Beam facility, the neutron Time-of-Flight (n-ToF) facility, and the Advanced WAKEfield Experiment (AWAKE) will be described in detail.