Session 4: Beam Performance during Run 2

During Session 4 of the 9$^{th}$ LHC Operations Evian Workshop, the LHC beam performance during Run 2 was presented and discussed. Multiple aspects were considered. The topics addressed during the session were the evolution of the collimation configuration, the beam emittance and intensity preservation and their modeling during the fill, the analysis of special losses in the machine and the impact of the e-cloud on beam performance and heat load. The session concluded with a summary on transverse and longitudinal beam stability observations and a report on the MD studies.