jeffrey.kissel@LIGO.ORG - posted 14:27, Thursday 04 January 2018 - last comment - 15:07, Thursday 04 January 2018(39993)
HAM4 / HAM5 / BSC2 SR and BS SUS Are Free of Rubbing at ~1e-6 Torr
J. Kissel
I've taken standard rubbing-check, top-mass to top-mass transfer functions for all suspensions in HAM4, HAM5, and BSC2 now that we're down to about 1e-6 Torr (which is sufficient a vacuum that the suspension positions won't change further from buoyancy). Good news: All suspensions are free of rubbing after pumpdown, including SRM, SR2, SR3 and BS
Data files are listed below. Detailed results will be processed and posted in due time.
/ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/SR?/SAGM1/Data/2018-01-04*.xml
/ligo/svncommon/SusSVN/sus/trunk/HLTS/H1/SR3/SAGM1/Data/2018-01-04*.xml
/ligo/svncommon/SusSVN/sus/trunk/BSFM/H1/BS/SAGM1/Data/2018-01-04*.xml
As a teaser / proof, I attach screenshots of each M1 Pitch to M1 Pitch transfer functions for the Triples.
Images attached to this report
Comments related to this report
J. Kissel Detailed transfer function analysis of SR3. Everything looks fabulous -- no complaints!
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J. Kissel Detailed analysis of the beam splitter's transfer functions also show no problems. Free and clear!
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