Reports until 20:55, Monday 28 August 2023
H1 SQZ
naoki.aritomi@LIGO.ORG - posted 20:55, Monday 28 August 2023 (72500)
Remeasure SQZ ASC sensing matrix

Naoki, Vicky

After alog72496, we turned on the SQZ ASC, but the ANG P/Y ran away for the first 10 minutes as already reported in alog71217. We remeasured the SQZ ASC sensing matrix and decided the input matrix as shown in the first and second attached figures (first: old, second: new). However, the behavior of ANG P/Y with new input matrix is similar to before (third attached figure). The ANG P/Y ran away and SQZ BLRMS got worse for the first 10 minutes and started to converge after that.

Images attached to this report