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Reports until 11:53, Thursday 30 October 2025
H1 SUS (SEI)
jeffrey.kissel@LIGO.ORG - posted 11:53, Thursday 30 October 2025 (87858)
First Look at L Estimator Performance: PR3 LP Estimators ON vs. OFF (Y ON at both times)
J. Kissel

Comparison of local performance metrics for H1 SUS PR3 after turning on the LP estimators this morning.
2025-10-30 13:00 UTC -- only Y estimator ON
2025-10-30 17:00 UTC -- all LPY estimators ON.

Both times are when IFO is in nominal low noise with no commissioning happening.

In short -- L is far more limited by residual suspension point motion that P or Y, so the reduction in off resonance drive is not *as* awesome as in P or Y. But there is reduction in off-resonance drive, and damping on resonance is about the same.
Nice!

More plots to come...
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Displaying report 1-1 of 1.