Session 1: Overview of Run 2

The first session of the 9$^{th}$ LHC Operations Evian Workshop showed an overview of the LHC operation in Run 2. Both the proton and ion runs were summarized, highlighting the machine commissioning steps from the powering tests to the magnets training, the beam commissioning steps from the optics measurements to the optics corrections and their implementation, the intensity ramp up and its impact on the machine settings and beam parameters. The physics production and the milestones achieved were treated in addition from the point of view of the LHC experiments. The injectors complex availability and the variety of beams provided to the LHC in Run 2 were also discussed. Finally a review of the availability and faults figures in the whole complex was presented.