gabriele.vajente@LIGO.ORG - posted 15:39, Monday 15 October 2018 - last comment - 20:15, Monday 15 October 2018(44569)
Coherence with intensity noise at 10%
Coherence between DARM and the ISS second loop error signals is at a 0.1 level.
So not big enough to be worried right now, but not far enough to forget about it.
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What is the status of the ISS servo? Second loop engaged? Bandwidth? Beam position optimized on the second loop PDs?
The beam is reasonably centered on the second loop PDs.
The second loop is currently not engaged, but it's been tested in the past and should be functional.