Reports until 16:37, Tuesday 08 July 2025
H1 SUS
oli.patane@LIGO.ORG - posted 16:37, Tuesday 08 July 2025 (85641)
(some) ITMX M0/R0 OLTFs taken to check for inconsistancies after satamp swap

Troubleshooting the 1 Hz lockloss we had earlier from OMC_WHITENING, there was some thought that it could be related to the ITMs' damping loops after the satamp swaps today. While we were sitting in DOWN recovering from an earthquake, we took the opportunity to take some OLTFs to compare to the measurements we took before the swaps.

These measurements all look pretty similar to before the satamp swap, so we don't think there's anything with the satamps that would be causing this.

ITMX M0
- In HEALTH_CHECK
- Took measurements for L, R, P, Y (note that the new loop suppression for Y is higher by 2 bc the 'before' measurement was taken with the damping gain at -0.5 while this 'after' measurement was taken with the gain at -1)
- Found in /ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ITMX/SAGM0/Data/2025-07-08_2230_H1SUSITMX_M0_WhiteNoise_{L,R,P,Y}_0p02to50Hz_OpenLoopGainTF.xml r12413

ITMX R0
- In HEALTH_CHECK
- Took measurements for Y
- Found in /ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ITMX/SAGR0/Data/2025-07-08_2250_H1SUSITMX_R0_WhiteNoise_Y_0p02to50Hz_OpenLoopGainTF.xml r12414

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