Reports until 10:24, Thursday 16 July 2026
H1 SUS (ISC)
oli.patane@LIGO.ORG - posted 10:24, Thursday 16 July 2026 (91065)
Outage recovery: SUS sliders restored to before the outage + DAMP_IN pointing discrepancies

RyanC, Oli

We've gone through all the suspensions and restored the alignment sliders to what they were yesterday (around 2026/07/16 04:11:58 UTC) before the power outage. All slider values have been SDF'd and all is good slider/sdf-wise by 1468256527 (Jul 16 2026 17:01:49 UTC).

A quick look at pointing shows that even though the sliders are all restored, many suspensions have different pointing. Here's a quick look at the difference between most of the suspension pointing before vs after the power outage after restoring OPTICALIGN OFFSETs. Both of these sets have the same offset slider values. Note that at this time the ISIs and HEPIs are all still down.

Once the SEI system is back up I'll be starting to adjust suspension pointing for those that don't match where they were yesterday by adjusting the slider values to get DAMP_IN (driftmon) back.

 

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