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Figure 6
Power spectral density (top panels) and cumulative r.m.s. noise (lower panels) in the horizontal and vertical directions with the turbopump switched on and off. Data have been collected using 3D accelerometers with a bandwidth of 1–800 Hz. From the measured acceleration, the displacement power spectral density and cumulative r.m.s. noise have been calculated. Data have been collected with the turbopump on and off. Despite some increase noised that is observable at high frequencies (above 100 Hz), the associated displacement is relatively small as shown by the cumulative r.m.s. noise. We conclude that the effect of using the turbopump is negligible in our configuration.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 6| November 2025| Pages 1390-1395
https://doi.org/10.1107/S1600577525007945
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