Reports until 00:09, Thursday 10 September 2015
H1 General
jeffrey.bartlett@LIGO.ORG - posted 00:09, Thursday 10 September 2015 (21355)
Evening Ops Shift Summary
LVEA: Laser Hazard
IFO: UnLocked
Intent Bit: Commissioning  

All Times in UTC (PT)

23:30 (16:30) Take over from TJ
23:30 (16:30) Relocking the IFO
23:52 (16:52) Locked at NOMINAL_LOW_NOISE, 22.7W, 68Mpc
00:02 (17:02) Lockloss – commissioning activities
00:36 (17:36) Locked at NOMINAL_LOW_NOISE, 22.7W, 68Mpc
00:38 (17:38) Lockloss – commissioning activities 
01:09 (18:09) Locked at NOMINAL_LOW_NOISE, 23W, 68Mpc
01:10 (18:10) Lockloss – commissioning activities
01:31 (18:31) Locked at NOMINAL_LOW_NOISE, 22.9W, 63Mpc
01:47 (18:47) Set intent bit to Observing, 22.9W, 69Mpc
02:25 (19:25) Set intent bit to Commissioning – Evan working on noise characterization  
03:05 (20:05) Range bump (over 80Mpc) due to calibration work
05:13 (22:13) Lockloss – Commissioning activities
05:30 (22:30) Adjust ISS diffracted power from -2.02v to -2.00v – diffracted power now at 8.4%
 

 Shift Summary & Observations:

- Attend all hands meeting until 23:20 (16:20)
- Evan working on noise characterization 
- Over 80Mcp range bump due to calibration work – NOT REAL
- At the 05:13 Lockloss, the OMC watchdog tripped 4 seconds after the Lockloss
- The first part of the shift was given to the commissioners while LLO was down. After LLO came back up and was in Observing mode, LHO switched to Observing mode as well. We had a 4-hour lock stretch in the middle of the shift with good range, moderate wind, no significant seismic activity. After losing lock, commissioning work continued until the last hour of the shift. Balance of the shift was spent relocking and doing fine tuning commissioning.