jeffrey.bartlett@LIGO.ORG - posted 15:14, Monday 31 March 2014 - last comment - 15:00, Tuesday 15 April 2014(11092)
H1-SR3 Phase2b Transfer Functions
Andres R. & Jeff B. We made several centering adjustments to the BOSEMs and reset all to 50% light. The latest set of transfer functions show the undamped coupling issues in the 03/25/14 data have been reduced or eliminated. The plots for the last set of TFs are attached below. The plots for the power spectra taken on 03/25/14 are also included.
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Because the spectra looked suspicious in the low frequency band, I retook some data from yesterday with SR3 on the test bench (M3 osems were disconnected), and compared it with the last measurements. In fact, the feature is not present anymore (green after vs blue before).
Other than this, spectra and transfer functions look acceptable for installation.
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