J. Kissel for everyone who's asking:
We've gathered a bit of "quiet time" when no one was touching the IFO, just after a broadband PCAL injection to test the state of the calibration.
Start:
2022-Nov-19 00:35:30 UTC
2022-Nov-18 16:35:30 PST
1352853348
End:
2022-Nov-19 00:45:30 UTC
2022-Nov-18 16:45:30 PST
1352853948
There's far too many folks here for me to summarize the current state of the IFO beyond what I know, but this is supposed to be a time period that we can compare to time prior to the Sep/Oct 2022 vent.
- Well thermalized, having been locked for hours
- 50.2 W into the IMC, 47.6 W into PRM
- DARM drive is all ETMX
- The PUM drivers are in State 1
- No Squeezing
- Still the same "fudges" to the calibration from LHO:64316
BUT, now
- No HAM5/6 Septum window
- Some "test" configuration of the EX electrical grounding situation
The broadband PCAL injection (again with no updates to the calibration) taken just prior to this quite time lives here:
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O3/H1/Measurements/FullIFOSensingTFs/2022-11-19_H1_PCALY2DARMTF_BB.xml