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Reports until 18:23, Thursday 20 February 2014
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robert.schofield@LIGO.ORG - posted 18:23, Thursday 20 February 2014 (10226)
PRMI and green x-arm lock coherence with PEM sensors

Figure 1 shows coherence between green arm lock and vibrations at EX and the LVEA. There is even some suggestion that the PSL table vibration might affect the signal. Figure 2 shows the coherence between PRMI and LVEA and PSL sensors. The peaks between 15 and 25 Hz are likely due to cleanrooms. The big PSL coherence is with the PSL periscope motion.

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