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Reports until 09:28, Wednesday 17 September 2025
H1 SEI
thomas.shaffer@LIGO.ORG - posted 09:28, Wednesday 17 September 2025 (86985)
Corrupted frame on BRSY caused high velocity overnight

Yesterday it initally looked like the BRSY was run up by activity at EY, but by the end of the day there was still no damping going on and DIAG_MAIN as well as SEI_CONF had notifications about BRSY. I spoke with Jim and he walked me through the same procedure that he and I did back in July (alog86074) when this happened last. The difference between last time and this time is that the checks I put in worked and we caught this much sooner. I also now have the correct way to remote into the brs machine.

After logging in and recapturing frames two times, the BRS is damping nicely.

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