Cryogenics Experience during Run 2 and impact of LS2 on next run

The first part of the presentation will summarize the overall cryogenic performance and availability for Run 2. Main evolutions and effects on the cryogenic system during Run 2 will be presented. The second part will focus on the LS2, in particular the main maintenance and evolutions engaged. We will present their expected effects on the global availability on one hand and their expected influence on the cryogenic limitations with respect to the required cooling power during Run 3 on the other hand. Finally, we re-formulate the expected cooling power limitations taking into account the balance between 1.9 K cooling power used for Inner Triplet and 4.5-20 K non-isothermal cooling power used for Beam Screens.