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Reports until 19:41, Sunday 26 May 2019
H1 General
corey.gray@LIGO.ORG - posted 19:41, Sunday 26 May 2019 - last comment - 00:01, Monday 27 May 2019(49464)
Back to NLN & OBSERVING @2:32UTC

After the last lockloss a few things occurred:

  1. IM2 & 3 were adjusted to post-EQ values (Cheryl)
  2. Green Shutters were closed on both ISC tables at end stations (not sure if this was normal or not, but it stumped me until Georgia pointed it out).  Then ran an alignment with new (restored) IM-values.
  3. For locking did have a few locklosses at LOCKING_ALS & this might be due to the FSS?  Georgia said we might have to change the FSS COMM gain gain again if there are more problems at this state.  At any rate, did make it through this and made it all the way to NLN.  At OFFLOAD_DRMI_ASC, did hang out here for a while.  Tweaked up POP18 via mainly SRM & this took POP18 to its preferred ~60counts.  This also quieted down the POP18 & PR_GAIN signals.

SDF Diffs at NLN:

  1. PSL FSS common gain---> significant digit issue:  ACCEPTED
  2. IM2 & IM3 pitch offsets:  ACCEPTED
  3. TMSX pit & yaw offsets:  ACCEPTED

Out of OBSERVING from 23:37 - 2:32utc.

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corey.gray@LIGO.ORG - 00:01, Monday 27 May 2019 (49468)

Attached is about a 2-week trend of the Transmission PD for the Ref Cav.

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