thomas.shaffer@LIGO.ORG - posted 16:00, Tuesday 02 July 2019 (50338)
Ops Day Shift Summary
TITLE: 07/02 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Jim
SHIFT SUMMARY: After the lock loss during commissioning, it has been a struggle to keep the green arms locked. I figured out that ALSX WFS DOF1 P seemed to be the culprit. If I let guardian lock green normally, clear the history of DOF1 P, engage DOF1 P after the other DOFs had settled a bit, then I was able to keep it locked and move on. I lost lock just after DRMI and ran into the same thing, but it was solved the same way. The wind has picked up a bit, so this doesn't help. Just lost lock again at DHARD_WFS. Handing off to JIm he can decide how to proceed.
LOG:
- 1459 Karen to EY
- 1501 Vanessa to LVEA
- 1502 Gerardo, Adrian, Matt to LVEA to remove vibrometer at viewport
- 1517 Sundae (sp?) to optics lab
- 1527 Dick, and fellows to LVEA to prep for balum work.
- 1527 Chris to LVEA with pest crew.
- 1530 Ken to LVEA to install emergency lights
- 1533 Hugh to EX to start HEPI accumulator maintenance
- 1535 Fil to EX then EY for chassis verification
- 1538 Chris out, heading up the Y arm, then X
- 1540 Ed to LVEA to transition to safe
- 1548 Marc to LVEA to start balun work
- 1550 Vanessa to EX
- 1559 Rahul starting charge on EY
- 1558 Dripta to optics lab
- 1613 Lawrence and Ethan out of LVEA, Dick, surf, and Marc still in.
- 1625 Hugh back
- 1630 Jason to tweak ref cav alingment.
- 1630 Adrian, Matt to LVEA to clean up
- 1637 Adrian, Matt out
- 1642 Chris back, starting tumbleweed clearing near overpass
- 1645 Dripta out
- 1645 Jason done
- 1704 Dave restarting ISCEX models
- 1711 Fil to EY to pull chassis
- 1712 Chris done with tumbleweeds
- 1714 EY charge done
- 1724 Chris to LVEA for famis checks
- 1730 Ed to EX to power cycle chassis
- 1733 Bubba and contractors to LVEA to look at safety railing install near HAM5/6
- 1737 Pest crew done
- 1742 Chris out
- 1804 Hugh to LVEA
- 1811 Bubba out
- 1811 Ed back
- 1824 DAQ reboot
- 1825 Ken out
- 1840 Gerardo and Kyle back from MX
- 1844 Ken to MX
- 1849 Optics crew out
- 1850 Fil, RIchard to EY to reinstall chassis
- 1852 Hugh to EX, Corey to LVEA to sweep
- 1855 Dick, Marc, and Matt out.
- 1855 Alignment started
- 1912 Hugh leaving EX
- 1921 Fil, Richard back
- 1922 Corey out, LVEA swept
- 2007 Roll up door on OSB
- 2011 Rick, Niko to optics lab
- 2024 Ken to MY
- 2038 Observatory mode set to commissioning after reachin DC Readout
- 2040 Ken done
- 2054 Kyle MY then to MX
- 2131 Lock loss from DC Readout. While commissioning work on PIs was ongoing, the ASC was beginning to become unstable. It would not hold.