Ops Shift Log: 03/26/2019, Owl Shift 07:00 – 15:00 (00:00 - 08:00) Time - UTC (PT)

State of H1: Unlocked

Intent Bit: Preventive Maintenance

Support: N/A

Incoming Operator: Niko

Shift Summary: Back to NLN. Craig & Georgia doing frequency noise injections. After finishing injections, and clearing a couple of SDF diffs, went back into Observing.

 

Earthquake lockloss – One maybe two back to back 5.6 in El Salvador. Took SEI_CONFIG to EARTH_QUAKE state as the microseism was pushing above 0.9um/s. Microseism was rising very quickly, and peeked at a little over 1.0um/s. The IFO broke lock just after selecting the state. Microseism is dropping just as quickly as it rose. Trying to relock.

 

When microseism was back under 0.08um/s, switched back to WENDY state.

 

Relocked at NLN, 35.2w, 104.4Mpc range, and back into Observing Mode. Lockloss - ASC saturation.

Reset Ring Heaters Filter input back to ITM-X to 0.5w and ITM-Y to 1.4w.

 

Relocked the IFO at NLN and went to Observing. Was in Observing for less than 30 seconds when lock broke due to LSC Servo Board Split Voltage is High. This was a problem earlier in the shift. Put the IFO into down ahead of the maintenance window.

 

Activity Log: Time - UTC (PT)

07:00 (00:00) Take over from Patrick

08:05 (01:05) Back to NLN

08:20 (01:20) Commissioners running frequency noise injections

08:30 (01:30) Commissioners finished with injections

08:34 (01:34) Back to Observing

12:32 (05:32) Lockloss – Earthquake

13:40 (06:40) Locked at NLN

13:42 (06:42) Back to Observing

13:47 (06:47) Lockloss – Ring heater Filter Input

14:19 (07:19) Relocked at NLN

14:24 (07:24) Back into Observe

14:24 (07:24) Lockloss – LSC Servo Board Split Voltage is High

14:25 (07:25) Put IFO into Down state ahead of maintenance window

14:51 (07:51) Karen – Going to End-Y

14:59 (07:59) Carols – Taking down DMT and FMC EPICS

15:00 (08:00) Turn over to Niko