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Figure 5
The dynamic radius of curvature of Mirror 1, as measured by a Fizeau interferometer, as a function of time after applying a voltage change of 500 or 1000 V to all piezo electrodes. High-accuracy mode has a voltage slew rate <10 V s−1, and deliberately applies damped sinusoidal voltage oscillations after the main impulse. Fast mode has a voltage slew rate of 50 V s−1. Oscillations and drift rates in the radius of curvature provide important information about how the mirror responds to voltage, and how the holder and electrical connectors constrain it.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 26| Part 1| January 2019| Pages 36-44
https://doi.org/10.1107/S1600577518015953
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