Summary: Ran Charge measurements for ETMx & ETMy from 7:23-8:30amPDT a little early this morning for morning commissioning work. There was a big EQ which occurred during this measurement.
Morning Activity:
- 13:52 Christina & Karen started LVEA work
- 14:14 ISI config to SC_OFF_NOBRSXY for Maintenance
- 14:23 Charge Measurements started/attempted...actually took 5-min to start due to ISC_LOCK Guardian*
- Original alignment slider values noted below**
- 14:37 Bartlett out to work on PSL plumbing inspection
- 14:43 noticed EQ on seismic DMTs(...turns out to be a 5.2 & 5.6 EQs near Gold Beach, OR)
- 15:30 Measurement complete & restoring. ETMs had been in an MISALIGNED guardian state...will leave ALIGNED.
* ISC_LOCK would not go to DOWN (said there was no path from READY to DOWN, & would go for PREP_FOR_LOCKING). Took to MANUAL & then selected DOWN; stayed in MANUAL for measurements.
Checking Data/Files:
I had trouble running the matlab files to analyze the data last week. So, for today I'm only checking to see that the data was posted. Similar to last week, we have 5-sets of measurement folders which contain the usual 5-data files per quadrant. Sending an email to Georgia & JeffK to let them know I ran the measurement & data ready for analysis.
Restoration Notes:
- ETMx had some SDF diffs, but they were already there & weren't me, so I will leave them as is.
- ETMy SDF diffs I made were restored (there were some others on the list; will leave them as is).
- Did not see any BIO diffs to change/restore for this measurement.
**ETM ALIGNED Slider values (before centering Oplevs)
ETMx:
- Pit: 124.7
- Yaw: -132.3
ETMy:
- Pit: 128.7
- Yaw: -122.3
I think I have worked around some of the problems in the old ESD_analysis script by commenting out some lines which didn't make sense; comments labelled GM to ease finding them again. I am planning to completely revamp it and include my 4-parameter script in the usual charge measurements.
Posting the results of the op-lev effective bias measurement for ETMX (believable) and ETMY (broken LR quadrant not included, UR quadrant dubious as for some reason this stream of data is much shorter than the others).
These measurements show ETMX has a fairly consistent negative V_eff across all 4 quadrants of <30V magnitude. ETMY is harder to interpret, with fewer data points, but it does look like the LL quadrant has a higher V_eff than UL.