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Figure 9
Example of RMS in the repetition period of helicity switching of the horizontal orbit fluctuations observed by BPM23-2 (red dots), (a) without and (b) with the continuous adaptive feedforward control (AFC). Without the AFC, the RMS fluctuation increased monotonically at about 80 nm day−1 for this time period (red line). Blue lines show the pole gap of ID23.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 6| November 2021| Pages 1758-1768
https://doi.org/10.1107/S160057752101047X
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