ibrahim.abouelfettouh@LIGO.ORG - posted 10:43, Thursday 12 September 2024 - last comment - 10:49, Thursday 12 September 2024(80059)
Lockloss 17:37 UTC
Lockloss during SQZ comissioning during a suspect ZM4 move.
1410197873 Maybe squeezing can cause a lockloss.... we lost lost lock 400ms after a 80urad ZM4 pitch move (ramp time 0.1s), sorry plot attached. Maybe this caused extra scatter in the IFO signal. We were seeing a scatter peak in DARM around 100Hz from PSAMS settings near where we were.