louis.dartez@LIGO.ORG - posted 15:39, Monday 10 April 2023 - last comment - 16:08, Monday 10 April 2023(68554)
new srcl offset
L. Dartez, J. Kissel, J. Driggers, K. Kuns
With the IFO now at ~78W and Jenne's retuning of the LSC input matrix, I adjusted the SRCL offset to see if we could flatten out the sensing function. I changed the SRCL offset (H1:LSC-SRCL1_OFFSET) to -165 counts (filterbank screenshot is attached). The attached 2023-04-10_H1_sensingfunction_vs_srcloffset.pdf shows the sensing function with a SRCL offset of -165 counts vs +100 counts, which is what it was this morning.
This data was processed using the latest pydarm parameter model set (pydarm_H1.ini@83764fcb).
Relevant logs:
- Last SRCL offset sweep (LHO 67613)
- Jenne retuned the LSC input matrix (LHO 68547)
- Craig measured a heavily anti-spring sensing function (LHO 68539)
- Jeff and Hsiang-Yu update the H1 pyDARM parameter model set (LHO 68514)
- Jeff updates the H1 pyDARM parameter model set again (LHO 68542)
Images attached to this report
Non-image files attached to this report
Comments related to this report
L. Dartez, E. Capote
The SRCL offset of -165 counts was added to the lsc_params.py Guardian script.
The measurement files taken during this morning's SCRL offset exploration session are listed below. All files are located in /ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O3/H1/Measurements/FullIFOSensingTFs.
SRCL offset 100 cts:
OLG: 2023-04-10_1904UTC_H1_DARM_OLGTF_LF_SS_5to70Hz_8min.xml
pcal2darm ss: 2023-04-10_1921UTC_H1_PCAL2DARMTF_LF_SS_5to70Hz_9min.xml
SRCL offset -175 cts:
reduced frequency points
reduced cycles
OLG: 2023-04-10_1939UTC_H1_DARM_OLGTF_LF_SS_5to70Hz_8min.xml
P2D: 2023-04-10_1944UTC_H1_PCAL2DARMTF_LF_SS_5to70Hz_9min.xml
SRCL offset -160 cts:
reduced frequency points
OLG: 2023-04-10_1950UTC_H1_DARM_OLGTF_LF_SS_5to70Hz_8min.xml
P2D: 2023-04-10_1954UTC_H1_PCAL2DARMTF_LF_SS_5to70Hz_9min.xml
SRCL offset -150 cts:
OLG: 2023-04-10_1959UTC_H1_DARM_OLGTF_LF_SS_5to70Hz_8min.xml
P2D: 2023-04-10_2001UTC_H1_PCAL2DARMTF_LF_SS_5to70Hz_9min.xml
SRCL offset -170 cts:
OLG: 2023-04-10_2004UTC_H1_DARM_OLGTF_LF_SS_5to70Hz_8min.xml
P2D: 2023-04-10_2006UTC_H1_PCAL2DARMTF_LF_SS_5to70Hz_9min.xml
SRCL offset -165 cts:
OLG: 2023-04-10_2010UTC_H1_DARM_OLGTF_LF_SS_5to70Hz_8min.xml
P2D: 2023-04-10_2012UTC_H1_PCAL2DARMTF_LF_SS_5to70Hz_9min.xml
SRCL offset -165 cts:
high fidelity measurement.
OLG: 2023-04-10_2015UTC_H1_DARM_OLGTF_LF_SS_5to70Hz_8min.xml
P2D: 2023-04-10_2025UTC_H1_PCAL2DARMTF_LF_SS_5to70Hz_9min.xml
SRCL offset -200 cts:
OLG: 2023-04-10_2039UTC_H1_DARM_OLGTF_LF_SS_5to70Hz_8min.xml
P2D: 2023-04-10_2042UTC_H1_PCAL2DARMTF_LF_SS_5to70Hz_9min.xml
For posterity, here's a screenshot of the Calibration monitor, which includes today's TCS settings. This is useful because TCS settings (CO2 power) are expected to be changed soon.
Images attached to this comment
posting a trend of POP_A_RF45, which was monitored to avoid saturation.
Images attached to this comment
