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Reports until 15:43, Tuesday 22 December 2015
H1 General (OpsInfo)
cheryl.vorvick@LIGO.ORG - posted 15:43, Tuesday 22 December 2015 - last comment - 16:10, Tuesday 22 December 2015(24393)
Ops Day Shift: H1 relocked and in Observe

State of H1: Low Noise, A2L measurements finished, now in Observe

JeffK and I talked to LLO, and they are working on a measurement, and expect to be back in Observe soon.

Help with Mantenance and Relocking: Kiwamu, JimW, Ed, JeffK, Jenne

Relocking Details/Issues:

  1. MICH DARK did not lock.  It WAS well aligned, but would not catch.  MICH DARK is needed for end of O1 calibraitons, so some effort to lock and or diagnose the issue was made, and not successful.
  2. H1 broke lock at ENGAGE_ASC twice, and JimW offered that sitting in each part, part 1, part 2, and part 3, and waiting for ASC signals to settle each time, has helped get H1 through those steps.  This issue and the necessary work around are new in the last two weeks.
  3. H1 then stalled at engaging the ISS 2nd Loop, which had to be engaged manually.

Currently: H1 in Observe at 23:24:36UTC, and as of this alog, range is 80Mpc.

Comments related to this report
cheryl.vorvick@LIGO.ORG - 16:05, Tuesday 22 December 2015 (24395)

Ops Day Summary: 16:00-23:59UTC, 08:00-16:00PT

State of H1: Observe for 44 minutes, range is 80Mpc

Current state of the site:

  • useism is around 0.5um/s
  • winds are 0-10mph across the site
cheryl.vorvick@LIGO.ORG - 16:10, Tuesday 22 December 2015 (24396)

I just notinced that CP3 LT200 is again 0!

It seemed to be working again earlier today, but seems to have failed again, or something.

There's an earlier algo/alogs from VAC with more info.

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