ryan.crouch@LIGO.ORG - posted 07:35, Thursday 21 November 2024 - last comment - 09:41, Thursday 21 November 2024(81394)
OPS Thursday DAY shift start
TITLE: 11/21 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Microseism
OUTGOING OPERATOR: Oli
CURRENT ENVIRONMENT:
SEI_ENV state: USEISM
Wind: 3mph Gusts, 1mph 3min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.57 μm/s
QUICK SUMMARY:
- The PMC and FSS are locked as I arrive
- Running the PSL_weekly script I see the PMC stayed locked all night 14.5 hours whereas the FSS has only been locked for 40 minutes
- 2ndary microseism continutes to decrease, its just getting under the 90th percentile
- Low wind
- More NPRO/PSL work to be done today, potentially a laser swap
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Comments related to this report
As expected the FSS could not stay locked by itself. This overnight test was with O3 NRPO + the different power supply.
With only the laser+PMC+FSS, the PSL FSS unlocked >8 times overnight. Each time the bigger +/- 0.1 V PMC mixer glitches were observed. SQZ TTFSS fiber mixer also sees the PMC mixer glitches.
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