Injectors Beam Performance Evolution during Run 2

This contribution gives an overview of the beam performance of the LHC injector chain during Run 2. In the first part the various beam types used for LHC luminosity production with protons (e.g. 25 ns standard, 25 ns BCMS, 8b4e, 8b4e BCS) are described. The present performance limitations along the injector chain together with the achieved beam parameters at LHC injection (e.g. transverse emittance, intensity, batch spacing) are summarised. Also the special high intensity beams, which were studied within the LIU framework and also extracted to the LHC for Machine Development studies, are mentioned. The second part describes the evolution of the ion beams for the LHC throughout Run 2 and their optimisation for luminosity production.