joshua.freed@LIGO.ORG - posted 16:58, Thursday 20 June 2024 (78561)
ITMY damping contributions to DARM
J. Freed, J. Kissel
Today we did damping loop injections on all 6 BOSEMs on the ITMY. This is a continuation of the work we did previously for ITMX.
Due to a saving error, the background measurments were taken about an hour and a half after the data was collected. Leading to the results being more difficult to interpret. We also only put the gain at 600 this time when before it was at 750.
The plots, code, and flagged frequencies are located at /ligo/home/joshua.freed/20240620/Scrpts. While the diaggui files are at /ligo/home/joshua.freed/20240620/Data
itmy_f1_20240620.png Shows and example of the F1 sensor. There seams to be some coupling in the 10-16 Hz range as with ITMX but unique coupling for ITMY in the 17-19Hz range and in the 32-35Hz range.
itmy_f1_back_20240620.png Shows and example of the F1 sensor with the background being manually set back in time by 225 sec before the F1 measurment. Where it shows a more easily interpretable result with coupling only in the 32-35Hz range.
Images attached to this report
