LVEA: Laser Hazard
IFO: UnLocked
Observation Bit: Commissioning
All Times in UTC
15:00 Take over from Ed
15:00 IFO Unlocked for maintenance
15:00 Hugh – Going to HAM2 to install STS A seismometer
15:00 Praxair N2 delivery to CP1
15:12 Christina & Karen – Cleaning in the LVEA
15:17 Gerardo & Kyle – Moving vacuum equipment between end stations
15:20 HFD – On site to work on alarms
15:22 Keita – Going to End-X to power cycle QPD
15:24 Joe – Escorting Sprague in LVEA
15:30 Jodi – Going to Y arm, X arm, & LVEA tagging vacuum equipment
15:33 Filiberto – Going to End-X to look into UIM problem
15:47 Joe & Sprague – Out of LVEA – Going to End-X and End-Y
15:50 Carlos – Going to End-X and End-Y to work on phones
15:54 Elli – Going to Hartman table at HAM4
15:56 Richard – Going into CER to work on PRM problem
16:01 Sudarshan – Going into LVEA to check on various PEM equipment
16:12 Nutsinee – TCS Temp Sensor swap
16:16 Elli – Out of LVEA
16:25 Filiberto – Finished at End-X
16:54 Joe & Sprague – Back from End Stations
16:55 Joe & Sprague – Going to the carpenter shop
16:59 Christina & Karen – Cleaning at End-X
17:00 Joe & Sprague – Back from carpenter shop
17:03 Sprague – Checking traps on the X-Arm
17:05 Jodi – Finished at End Stations, going into the LVEA
17:19 Christina & Karen – Finished at End-X – Going to End-Y
17:29 Kiwamu – Going to PSL rack to measure ALS-Diff stuff
17:44 Keita – Finished at End-X
18:03 Keita – Starting model restarts
18:03 Christina & Karen Finished at End-Y
18:08 Sheila – Taking down the mode cleaner
18:24 Travis – Going into LVEA to get cables
18:26 Dave – Doing DAQ restart
18:29 Elli – Going into the LVEA to assist Nutsinee
18:32 Travis – Out of LVEA
18:38 Filiberto & Andres – Terminating cables near the PSL rack
18:41 Carlos – Back from the End Stations
18:42 Dave – Going into CER and both end stations to update drawings
18:55 Elli – Out of the LVEA
18:58 Nutsinee – Out of the LVEA
19:00 Kyle & Gerardo – Driving truck & trailer from End-Y past CS going to End-X
19:03 Jeff K. – Going into LVEA to check on cable work near PSL rack
19:05 Sprague – Back from both arms
19:10 Jeff K. – Out of LVEA
19:10 Filiberto & Andres – Out of LVEA – in CER terminating cables
19:20 Add 250ml water to PSL crystal chiller
19:35 Kyle & Gerardo – Finished moving vacuum equipment
20:22 HFD – Maintenance work at Mid-Y and End-Y
20:41 Joe & Chris – Removing birds nest from ladder
20:50 Richard – Going to the roof
21:06 Richard – Off the roof
21:12 Richard – Going into MSR
21:14 Joe & Chris – Back from Mid-X
22:16 IFO locked at NOMINAL_LOW_NOISE
Shift Summary & Observations:
Start maintenance at 15:00. Working through the task list.
No apparent issues with maintenance tasks
Finished maintenance around 18:00, Leo and Kiwamu taking measurements until around 19:50
Started to lock the IFO at 19:55. Green locking OK. The alignment on AS-Air did not look so good. Run an initial alignment and start locking the IFO. Had to dress up the power by tweaking PRM (mostly in yaw). Commissioners were making fine adjustments, and the IFO locked at NOMINAL_LOW_NOISE with a 50Mpc range. After the initial alignment and a few adjustments by the commissioners, the IFO locked without much difficulty.
NOTE: The PSL crystal chiller was alarming with a low water level. Add 250ml of water to top off reservoir. According to the log on the chiller, water was last added on 08/05/15. The PSL chiller water levels need to be checked once per week.
Commissioners are working on calibration.