Reports until 07:52, Wednesday 28 June 2023
H1 General (DetChar, ISC)
camilla.compton@LIGO.ORG - posted 07:52, Wednesday 28 June 2023 (70910)
OPS Owl Shift Summary

TITLE: 06/28 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 143Mpc
SHIFT SUMMARY: Quiet night, locked at NLN for 17h50.
LOG:                                                                                                                                                                       

Start Time System Name Location Lazer_Haz Task Time End
07:11 TCS       Out of Observing due to CO2X Laser Unlock 70906 07:13
08:39   Fire Panel CUR N Buzzing from Fire Panel alarm @ 8:39 UTC Tagging DetChar 08:39
14:36 VAC Janos EY n Turn off pump for dewar still out

Plot attached of jitter nose at 120Hz and the noise at 4.5kHz changing thoughout the lock (CAL-DELTAL_EXTERNAL plotted). High freq noise is muchlower as soon as we lock (black dahsed line) and then quickly gets worse before slowly the 4500Hz noise starts decreasing. Also seen via SQZ BLRMs bands around 135Hz (orange) and 4.6kHz (purple), see attached plot, and in DARM BLRMS band 100-450Hz plot. Tagging ISC.

Images attached to this report