cheryl.vorvick@LIGO.ORG - posted 16:27, Friday 11 November 2016 - last comment - 18:44, Friday 11 November 2016(31423)
Ops Day Summary:
State of H1: locking well, OAF issues
Activities:
- all locking attempts made it to NLN
- all NLN attempts included waiting in Noise Tunings for at least 15 minutes
- OAF has died multiple time
- One lock was saved when OAF came back and I was able to damp PI mode (no modes were ringing up when OAF died)
- I suggested we might save more locks if the PI mode damping was down as short a time as possible
- Jim reorganized the OAF restart script to kill the PI process last, and restart the PI process first, to minimize the down time
- I've taken H1 out of lock twice today to accomodate invasive OAF work
- one lock loss was during the earthquake at approx. 22:00UTC
Currently:
- fire department is at MX to look at their fire pannel - it didn't respond to the daily query
- Fil and Jim are here and trying another change on OAF
- OAF is currently down
Cheryl's idea was very clever; we now have ~1 min PI damping downtime which is no problem and have made it through several restarts without PI being a problem.