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Reports until 20:49, Tuesday 11 February 2020
H1 General
cheryl.vorvick@LIGO.ORG - posted 20:49, Tuesday 11 February 2020 - last comment - 21:56, Tuesday 11 February 2020(55057)
mid-shift update

H1 has been in Observe.  The range has been droping and recovering.  The wind has certainly had an effect on the range, however, subjectively it looks like something else is in there.  Both Robert and I independently had this observation.  I've been checking SQZ, and looking at some of the channels that grow in amplitude and show and increase in DC levels when SQZ is effecting the range, and the channels are not showing that change.  I did notice that a couple days ago when Patrick unlocked and relocked SQZ, to correct it's effect on range, the PZT1 dropped from around 80 to around 20.  The PZT is currently around 80, so maybe there's something there?  Winds have been mostly above 10mph, with some spikes up to 40mph.

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cheryl.vorvick@LIGO.ORG - 21:56, Tuesday 11 February 2020 (55059)

... and after I wrote this update, SQZ started to ring up (?), now relocked, range back at 120Mpc.

  • 05:35:43 - H1 out of Observe, SQZ relocked
  • 05:37:37 - H1 back in Observe
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