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Reports until 10:44, Saturday 07 July 2012
H2 SUS
jeffrey.kissel@LIGO.ORG - posted 10:44, Saturday 07 July 2012 - last comment - 16:00, Saturday 07 July 2012(3352)
Starting measurements of H2 SUS ETMY (July 7th)
Just a heads up, I'll be starting some measurements using ETMY nowish (2pm ET, July 7th 2012) which should last for 2 to 3 hours. I will post when I finish, and then results and analysis will be to come. I'll be launching DTT measurements from cdsws1.

For those who are interested (though I think I emailed everyone who might be):
Matt Evans and I, before I left last friday (June 29) had thought we'd stumbled on something interesting regarding cross-coupling vs. excess cavity motion while measuring the open loop gain transfer functions of the damping loops. See LHO aLOG 3312. Specifically the 4th page of the L and P sets of plots showing that, with the damping loops open, the cross-coupling from L to P is *huge*, where it's not huge in P to L. But, as I mention in the log, the right thing to do is to measure the open loop gain with the loops closed (i.e. IN1/IN2), and take a look at the results. These are the measurements I'll be taking now.
Comments related to this report
jeffrey.kissel@LIGO.ORG - 16:00, Saturday 07 July 2012 (3355)
These measurements are finished (as of 3pm PT).
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