Session 2: post LS1 scenarios without and with Linac4

This document summarizes the talks and discussion that took place in the second session of the RLIUP Review. The main aims were to examine the performance of the injectors and LHC and what could be the integrated luminosity by 2035 if no major upgrade except the connection of LINAC4 and H- injection is implemented and to take into account the lifetime of major accelerator components whose repair or replacement would require long shutdowns. The session comprised four presentations: “Expected performance in the injectors at 25 ns without and with LINAC4” by G. Rumolo; “Integrated performance of the LHC at 25 ns without and with LINAC4” by J. Wenninger; “Required maintenance and consolidation to run like that (injectors and LHC) until 2035?” by K. Foraz; and “What could stop us, when and how long?” by L. Bottura.