gerardo.moreno@LIGO.ORG - posted 04:17, Saturday 03 February 2024 - last comment - 13:39, Saturday 03 February 2024(75718)
HAM7 Purge Air Increased
Before heading home yesterday, I checked the open chambers, and noted that the C3 covers were not billowing out as per the usual "weekend setting", HAM6 looked good. I spoke to Keita K., Vicky X. and Betsy W. about the lack of purge air. I was given the green light to increase the purge air in HAM7.
Tagging SQZ. If the SQZ dither lock is very sensitive next week, could try turning down the purge air if needed.
Noting this here because during HAM7 alignment checks this week 75686, the sqz beam sometimes unlocked when touching things on table. So, the higher purge air is probably fine for HAM6 sqz beam alignments, but might be less stable for HAM7 sqz beam alignment checks.