Reports until 17:34, Tuesday 16 July 2024
X1 SUS
oli.patane@LIGO.ORG - posted 17:34, Tuesday 16 July 2024 (79181)
07/12 BBSS M1 Transfer Functions Comparison to Model and Previous Measurements

Ibrahim, Oli, Betsy, Jeff

On July 12, Ibrahim retook the transfer functions for M1 of the BBSS (79083) after adjusting some of the alignment issues that we saw in the July 10th transfer functions (79032). I've compared this latest data set to our dynamical model for the BBSS, attached and at $(sussvn)/BBSS/X1/BS/SAGM1/Results/2024-07-12_1400_tfs/. I've also compared this dataset to both our first measurements back in January (first build of BBSS), as well as our July 10th measurements(rebuild w/ change in wire loop length). Those plots are also attached and can be found in $(sussvn)/BBSS/Common/Results/allbbss_2024/Jan05vJuly10vJuly12_X1SUSBS_M1/.

They are clean and agree very well with the model and our first build measurements. Pitch has a small shift in one of its peaks as well as a new peak right up next to it, but we know this is attributed to the change in wire length that was made during the rebuild. We will work with the dynamical model to make sure that this change in wire length gives us these same peaks in pitch. Everything is committed to svn.

Non-image files attached to this report