joshua.freed@LIGO.ORG - posted 14:09, Thursday 27 February 2025 (83090)
ETMY BOSEM Noise Injections
J. Freed
ETMY shows strong coupling of BOSEM noise between 9-14Hz by about a factor of 20 below DARM from most sensors.
Today I did damping loop injections on all 6 BOSEMs on the ETMY M0. This is a continuation of the work done previously for ITMX, ITMY, PR2, PR3, PRM, SR2, SR3, SRM, and ETMX. As with PRM, gains of 300 and 600 were collected for SR3 (300 is labled as ln or L). Calibration lines were off. Data was colected in two parts, as such, f1,f2,f3 had a different background than lf,rt,sd bosems.
The plots, code, and flagged frequencies are located at /ligo/home/joshua.freed/bosem/ETMY/scripts. While the diaggui files are at /ligo/home/joshua.freed/bosem/ETMY/data and data2. I used Sheila code located under /ligo/home/joshua.freed/bosem/ETMY/scripts/osem_budgeting.py to produce the sum of all contributions as well as the individual plots.
main.png Shows the current noise plot for most of the suspensions done excluding ITMX, ITMY, and PR2.
ETMY1.png Shows the estimated contributions to DARM from the F1, F2, F3 bosems only using the 600 gain data
ETMY1.png Shows the estimated contributions to DARM from the LF, RT, SD bosems only using the 600 gain data. They show super strong coupling around the bounce mode but need to check the correlation between the incresed bounce mode and my measurments. This is why I collect the 300 gain data.
reference number in diaggui files for ETMY in data 1
Background time: (ref0 DARM, ref1 F1_out, ref2 F2_out, ref3 F3_out, ref4 LF_out, ref5 RT_out, ref6 SD_out)
F1L time: (ref7 DARM, ref8 F1_out)
F1 time: (ref9 DARM, ref10 F1_out)
F2L time: (ref11 DARM, ref12 F2_out)
F2 time: (ref13 DARM, ref14 F2_out)
F3L time: (ref15 DARM, ref16 F3_out)
F3 time: (ref17 DARM, ref18 F3_out)
F1L time: (ref7 DARM, ref8 F1_out)
F1 time: (ref9 DARM, ref10 F1_out)
F2L time: (ref11 DARM, ref12 F2_out)
F2 time: (ref13 DARM, ref14 F2_out)
F3L time: (ref15 DARM, ref16 F3_out)
F3 time: (ref17 DARM, ref18 F3_out)
reference number in diaggui files for ETMY in data 2
Background time: (ref0 DARM, ref1 F1_out, ref2 F2_out, ref3 F3_out, ref4 LF_out, ref5 RT_out, ref6 SD_out)
LFL time: (ref7 DARM, ref8 F1_out)
LF time: (ref9 DARM, ref10 F1_out)
RTL time: (ref11 DARM, ref12 F2_out)
RT time: (ref13 DARM, ref14 F2_out)
SDL time: (ref15 DARM, ref16 F3_out)
SD time: (ref17 DARM, ref18 F3_out)
LFL time: (ref7 DARM, ref8 F1_out)
LF time: (ref9 DARM, ref10 F1_out)
RTL time: (ref11 DARM, ref12 F2_out)
RT time: (ref13 DARM, ref14 F2_out)
SDL time: (ref15 DARM, ref16 F3_out)
SD time: (ref17 DARM, ref18 F3_out)
Images attached to this report
