arnaud.pele@LIGO.ORG - posted 15:33, Thursday 14 February 2013 - last comment - 16:41, Tuesday 19 February 2013(5498)
PR3 Phase 2b Power Spectra
Attached phase 2b power spectra for PR3. The two first pdfs show a comparison of the power spectra between L1-PR3 (June 2012),X1-PR3 (June 2012) and H1-PR3 (Feb 2013) respectively damping off and damping on. The three others show the effect of damping for the top, middle and lower masses of PR3 New power spectra will be taken tomorrow since Betsy has to change some of the OSEMs.
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Comments related to this report
New power spectra have been taken after Betsy changed the "unfortunates brackets"
The attached plots show comparison between H1 PR3 (Feb 15th 2013 after changing the brackets) H1 PR3(Feb 14th 2013 before changing the brackets) X1 PR3 (June 2012) and L1 PR3 (June 2012)
**Looking at M2 and M3 Pitch from ALL_Spectra_Doff, some peaks appear to be shifted from the other curves. (~1Hz --> ~1.2Hz and ~3Hz --> ~3.2Hz)
Will run power spectra overnight and will compare it tomorrow
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