0428同步年報-2021-全

092 ACTIVITY REPORT 2021 67.4 91.4 110.4 160.2 106.4 98.4% 99.2% 98.4% 98.8% 97.9% 0 50 100 150 200 80% 85% 90% 95% 100% 2017 2018 2019 2020 2021 TPSMTBF (Hour) TPS Availability Year PS, 7, 16% Cryogenic, 0,0% BD, 0, 0% RF, 11, 26% I&C, 3, 7% Operation, 1, 3% Magnet, 1, 2% Vacuum, 0, 0% Utility, 1, 2% Safety, 0, 0% Linac, 2, 5% Others, 10, 23% Beamline, 7, 16% Fig. 4 : User time and beam availability of Taiwan Photon Source from 2019 onward. Fig. 5 : Mean time between failures and beam trip statistics of TPS from 2017 onward. Fig. 6 : Beam-trip distribution of TPS accelerator in 2021. (43 trip events in total) Downtime and Failure Analysis of the TPS In 2021, a total of 43 beam trips and 99 hours of downtime were recorded. The contributions of each subsystem with respect to beam trips and downtime are illustrated in Figs. 6 and 7 , respectively. The subsystems all gradually improved over the years to attain stable operations.