Study of the CMS RPC Efficiency during Run II Program of the LHC

During RUN II of the LHC, the RPC system is running smoothly and collecting data for physics analysis. The performance of the system is closely monitored and studi-ed. Here the results for the efficiency studies are shown. The RPC system is a very dynamic working system, which has a constantly changing working conditions dur-ing data taking periods. RPC efficiency studies allow for monitoring the system per-formance in a lot of different levels and quickly identifying and fixing any possible operational problems.