Shifter: Adrian Helmling-Cornell

Fellows: Ethan, Vlad

Some highlights for the first week-long DQ shift of O3b:

• Total observing time: 83.21% of the week
• Initial air compressor isolation not very effective
  • Large 36 Hz peaks in daily strain
• Problems with the squeezer's coherent locking field (CLF) settings led to long stretches of decreased range, accompanied by a large rise in low-SNR, high frequency glitches
  • Resolved this weekend
  • Caused glitching in ETMX ESD voltage chassis sometimes, but not always
    • May follow up by looking at glitching in PEM EX rack thta we have been seeing for a few months now
• Later half of the week featured lots of higher-SNR glitching in 15-40 Hz range

Full report here