Summary: Took SQZ/ASQZ/NoSQZ data. Recommissioned SQZ_ANG_ADJUST guardian but leaving it off. Script prepared to change ZM4/ZM5 PSAMs while IFO is locked, this depends on SQZ IFO ASC and the SQZ_ANG_ADJUST working correctly.
Nominal since yesterday is 205deg SQZ angle, PSAMS 120/120 76444.
I checked the SQZ BLRMs didn't have any unexpected peaks in and then scanned the ADF demod phase as we did in 74691. From 108 to 150 in 2deg / 180second steps. See attached plot. SQZ_ANG_ADJUST servos the SQZ angle by keeping H1:SQZ-ADF_OMC_TRANS_SQZ_ANG at 0. Accepted new optimum H1:SQZ-ADF_OMC_TRANS_PHASE = 128 in sdf. Nominal in NLN for SQZ_ANG_ADJUST is still DOWN though it probably it now should be fine to keep on, we should change this next week.
While trying to take ASQZ data, OPO unlocked. Took No SQZ time 4:45UTC to 4:55UTC, we are getting 4.8 dB of SQZ at 2kHz.No SQZ didn't look as good as 6/28/2023 ref. Relocked with different FC_WFS value, plot attached I needed to readjust sqz angle from 215 back to 205. After that we got better SQZ and ASQZ.. what changed? Different OPO temp or alignment or PZT at different range? I'm not sure. Think this means the SQZ_ANG_ADJUST setting is now wrong so adjusted to ADF_OMC_TRANS_PHASE = 140.
- No SQZ time 4:45UTC to 4:55UTC
- ASQZ time (ASC off) at 05:13UTC to 05:23UTC (with angle -102)
- SQZ time (ASC off) at 05:29 UTC to 05:40UTC (with angle 204.9) nearly 5dB of SQZ
- DTT plot attached
Have a script saved in userapps/../sqz/h1/scripts/PSAMs_double_raster.py that adjusts:
The test will stop and go back to nominal phase and ZMs if the IFO looses lock. After the test the ZM PSAMs will slowly (5mins so ASC/ADF servos can keep up) be taken back to 120/120.
Instructions for operator is there is time tomorrow:
- IFO's should be locked for at least 3 hours
- Take SQZ_ANG_ADJUST guardian to ADJUST_SQZ_ANGLE_ADF
- Check that this doesn't pull the Squeezing away from nominal.
- SQZ BLRMs and DARM should stay the same or get better / lower (ndscope for BLRMs in sitemap > SQZ > SQZ Overview > SQZ Scopes > SQZ_BLRMS).
- If it makes BRLMs/DARM terrible, could try adjusting H1:SQZ-ADF_OMC_TRANS_PHASE or give up and don't run the script (take SQZ_ANG_ADJUST guardian to DOWN and put H1:SQZ-CLF_REFL_RF6_PHASE_PHASEDEG back to it's original value).
- Start the script in a terminal using command:
- python /opt/rtcds/userapps/release/sqz/h1/scripts/PSAMs_double_raster.py -s 'now'
- Don't close this terminal or log out (could use a tmux session to avoid accidentally closing it)
