Dave notes that this lockloss occurred towards the end of CP1 fill 71376 and sometimes there is a bang noise with the fill as the pipes change pressure.
I see nothing in the PEM channels that would cause a lockloss. Attached is some nearby microphone and accelerometer plots. You can see H1:PEM-CS_ACC_BEAMTUBE_YMAN_X_MON get noisier during this time. Looks like there used to be a H1:PEM-CS_MIC_YMAN_SPOOL_MON that isn't there anymore? Tagging PEM
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camilla.compton@LIGO.ORG - 12:50, Sunday 16 July 2023 (71383)
Back to NLN and Observing at 19:48UTC after waiting 1h40m(!!!) in OMC_WHITENING for violins to damp, Mainly ETMX 4 and 7 that are taking a long time to damp, tagging SUS.
Dave notes that this lockloss occurred towards the end of CP1 fill 71376 and sometimes there is a bang noise with the fill as the pipes change pressure.
I see nothing in the PEM channels that would cause a lockloss. Attached is some nearby microphone and accelerometer plots. You can see H1:PEM-CS_ACC_BEAMTUBE_YMAN_X_MON get noisier during this time. Looks like there used to be a H1:PEM-CS_MIC_YMAN_SPOOL_MON that isn't there anymore? Tagging PEM
Back to NLN and Observing at 19:48UTC after waiting 1h40m(!!!) in OMC_WHITENING for violins to damp, Mainly ETMX 4 and 7 that are taking a long time to damp, tagging SUS.