2020同步年報

090 ACTIVITY REPORT 2020 95.96% 99.16% 98.66% 95.80% 96.76% 98.35% 99.24% 98.77% 97.67% 99.38% 98.68% 98.29% 80% 85% 90% 95% 100% 0 200 400 600 800 1000 1200 1400 1600 1800 1 2 3 4 1 2 3 4 1 2 3 4 2018 2019 2020 Availability Hours Scheduled User Time Delivered User Time Availability Year/Quarter Fig. 4 : User time and beam availability of TPS since 2018. Fig. 5 : MTBF and beam-trip statistics of TPS since 2017. Fig. 6 : Beam-trip distribution of TPS accelerator in 2020. (28 trip events) 67.4 91.4 110.4 160.2 98.4% 99.2% 98.4% 98.5% 0 50 100 150 200 80% 85% 90% 95% 100% 2017 2018 2019 2020 MTBF (Hour) Availability TPS Year PS, 2, 7% Cryogenic, 0, 0% BD, 2, 7% RF, 4, 14% I&C, 3, 11% Operation, 1, 3% Magnet, 0, 0% Vacuum, 1, 3% Utility, 1, 4% Safety, 1, 4% Linac, 2, 7% Other, 8, 29% Beamline , 3, 11% 28 trip events in 2020 Downtime and Failure Analysis of TPS In 2020, there were 28 beam trips and downtime 68 hours in total. The contributions from each subsystem are illustrated in Figs. 6 and 7 , respec- tively. The sub-systems are all gradu- ally improved in past years to achieve stable operation.