TITLE: 12/06 Owl Shift: 0600-1530 UTC (2200-0730 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY:
LOG:
H1 called me to help with SDF issues.
SUS ETMX and ITMX SDFs
These seemed like they were changed randomly in the night but also seemed like that may have unlocked the IFO if reverted so I accepted them.
But now that i'm looking back at Francisco's Alog I think some may have been intentional.
More than 1 IFO H1 call tonight:
H1 Called me earlier in the night and I slept though the calls because I did not realise my phone was not properly set up for this owl shift before I went to sleep.
Sheila, Camilla
Looking into last night's issues, there were two sets of sdfs that stopped us going into observing:
- L2L gain: this was changed in lscparams but ISC_LOCK was not loaded so the sdf was accepted as the new value but the guardians set us back to the old value when we relocked.
- Francisco has added notes to the 81630 code to remember to edit lscparams, reload ISC_LOCK and accept in sdf.
- TRAMPS: The new SCAN_ALIGNEMENT code 81597 had hard coded TRMAPs of 3 when nominal is 2. Only X arm ran scan alignment so the sdf diffs were only in TSMX and ETMX.
- Sheila checked the code doesn't depend on them and edited ALS_ARM.py to set these SCAN_ALIGNEMENT TRAMPS to 2s.
If we loose lock today we need to: load ISC_LOCK and ALS_XARM and ISC_LOCK and accept 198.6 as the H1:SUS-ETMX_L3_DRIVEALIGN_L2L_GAIN and the TRAMPs as 2s. If we don't loose lock by the end of the day we should drop out of observing, change the L2L and TRAMPS, reload guardians and accept sdf.
https://services1.ligo-la.caltech.edu/FRS/show_bug.cgi?id=32847
FRS Ticket Logging the 3hrs 30 mins out of OBSERVING