Masuda, T. JACoW Publishing Geneva, Switzerland 978-3-95450-200-4 10.18429/JACoW-PCaPAC2018-THCA4 English 131-135 THCA4 timing FPGA network software experiment Contribution to a conference proceedings 2019 2019-01 https://doi.org/10.18429/JACoW-PCaPAC2018-THCA4 http://jacow.org/pcapac2018/papers/thca4.pdf Time-resolved measurements in synchrotron radiation experiments require an RF clock of a storage ring accelerator and a fundamental revolution frequency (zero address) signal. For the usage of these signals around the experimental station, long RF cables from the accelerator timing station, divider modules and delay modules must be deployed. These installations need a lot of cost and require a lot of efforts to adjust the timing by experts. To lower these costs and efforts, the revolution frequency, which is ~209 kHz at the SPring-8 storage ring, and tag information distribution system has been studied based on a high precision time synchronization technology over a network. In this study, the White Rabbit* (WR) technology is adopted. The proof of concept system has been built, which consists of a master PC, a slave PC and two WR switches. The master PC detects the zero-address signal and distributes the time stamps with tag information to the slave PC. Then the slave PC generates the ~209 kHz signals synchronized with the target bunch by adding the offset time by software. The measured one-σ jitter of the output signals from the slave PC has been achieved less than 100 ps.