QPS performance during the 2016 LHC run

The LHC quench protection system consisting of more than 13000 quench detectors and more than 6000 actuators (quench heater power supplies and energy extraction systems) reached an impact availability of 99.49% during the 2016 proton Run. This is an improvement by 80% compared to the 2015 figures. Changes to the systems in the YETS 2015/16 comprise the introduction of the new radiation tolerant 600A quench detectors in the RR-areas as well as a firmware update of the crate controllers of the nQPS system throughout the LHC tunnel. Preventive maintenance had been performed on all 13kA energy extraction systems as well as on selected 600A energy extraction systems. The 2016 performance is compared system by system to the 2015 figures. Radiation to electronics effects, a big issue in 2015, has not lead to a false trigger of a quench detector in 2016 although two crate controllers might have been affected during the proton-ion run.