Maintenance Summary:
Operating H1 on this Maintenance Morning remotely (used Reservation System to display activities on H1 I was aware of, logged into TeamSpeak in a room ("LHO COMM/OPS") with LHO staff, and had phone/text contact with reduced staff on-site, mainly Richard & Gerardo).
Overall for H1, it was a light day with our current LIGO Lab Operational Situation. Kept H1 locked as long as we could. When it did drop a main activity was reviewing/updating the SDF for all relevant subsystems. There was commissioning work for HAM SEI Feed Forward. And Maintenance was pretty much over just after noon (with commissioning work (Jenne) and activity on the site [relayed by Richard M via text] only lasting a few minutes beyond noon). Locking was straightforward with only really two attempts needed to get back to NLN. Below is the specific log of activities as I recorded them.
LOG:
- 14:52-14:59 PEM Injection
- 15:00 Maintenance
- Gerardo VAC work all over each End Station
- 15:19-15:38 EX visit. (BRS kept "ON")
- 15:48-16:06 EY visit. (BRS kept "ON")
- 16:00 "TEST T369506" acknowledged
- 16:05 Shaking HAMs for SEI Feedforward work (Jenne)
- 16:13 Talked/check up with Richard M who is in Control Room. He acknowledged the "TEST" on Verbal. Gerardo just arrived back from EY.
- 16:28 Lockloss
- Jenne had excitations which I heard say was probably due to lockloss.
- Richard said we had (2) LN trucks on site at the time (parked)
- 16:29-17:20 Holding ISC LOCK in READY state, for SDF snapshots work (Sheila, Jenne, Jeff, Jim, Rahul, etc...)
- 16:39 Received "GRB-Long", but out of lock. Also confirmed with LLO.
- 17:20 Begin locking to DRMI.
- Green arms were both off in yaw & needed several rounds of INCREASE FLASHES
- 17:37 lockloss
- 17:53 @OFFLOAD DRMI ASC & handed back to jenne for her HAM sesimc feedforward work.
- 19:06 HAM seismic feedforward work comlete (Jenne) & moved on to NLN.
- 19:09 Lockloss at RESONANCE
- 19:46 NLN & 19:48 OBSERVING!