Ops Shift Log: 03/17/2020, Day Shift 15:00 – 23:00 (08:00 - 16:00) Time - UTC (PT)

State of H1: Locking

Intent Bit: Locking

Support: Jenne

Incoming Operator: Ed

Shift Summary: After turning back on the End-X EDS driver, the IFO relocked post maintenance with little trouble. Lost lock shortly after getting into Observe. Lockloss probable cause was rung up Violin Modes. Have has a couple of lock losses during relocking due to rung up Violin modes. Rahul has been working on damping out the ITMX modes. Holding at PREP_ASC_FOR_FULL_IFO while the ITMX modes are dropping.  

 

Activity Log: Time - UTC (PT)

14:25 (07:25) Lock loss

14:40 (07:40) Hugh & Chris – Going to End-Y for well & wind fence work

14:44 (07:44) Well sample company on site

14:50 (07:50) Tyler – Into the LVEA to start work at HAM8

14:57 (07:57) Kyle – Going to End-Y then End-X

15:00 (08:00) Take over from Corey

15:06 (08:06) Gerardo – Going into LVEA for GV3 decommissioning work

15:24 (08:24) Desert Green on site for weed control

15:26 (08:26) Port-a-Potti on site to service toilets

15:37 (08:37) Keita – Going to End-Y for HWS work – Transition the Laser Hazard

15:45 (08:45) Jim & Dave – Model restart – All HEPI and HAMs

15:55 (08:55) Richard – Transition LVEA to laser safe

16:13 (09:13) Norco on site with N2 for CP5

17:00 (10:00) Gerardo – Going into the LVEA to check View Port covers

17:08 (10:08) Gerardo – Out of the LVEA

17:15 (10:15) Gerardo – Going to Mid-Y to check on RGA

17:30 (10:30) Gerardo – Back from Mid-Y

17:33 (10:33) Jenne – Commissioning/locking work

17:52 (10:52) Chris – Tumbleweed clearing along Y-Arm – Big Green

18:16 (11:16) Gerardo – Going into the LVEA to look for a 12” conflate

18:23 (11:23) Keita – Done at End-Y – Doing sweep and transition back to Laser Safe

19:42 (12:42) Filiberto – Going to End-X to reset ESD driver

                      Driver turned off when VAC tripped

19:50 (12:50) Filiberto – Back from End-X

20:58 (13:58) Relocked at NLN

21:00 (14:00 Clear SDF DIFFs and back to Observing

21:18 (14:18) Lockloss – DCPD saturations just before lock loss

23:00 (15:00) Turn over to ED