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Reports until 14:32, Sunday 08 January 2017
H1 General (SEI)
cheryl.vorvick@LIGO.ORG - posted 14:32, Sunday 08 January 2017 - last comment - 13:56, Thursday 12 January 2017(33089)
H1 ISI CPS Noise Spectra Check - Weekly

Ran the diaggui template for the HAM and BSC ISI CPSs (CPS'...).

No overall issue with one sensor being elevated.

I found one thing that is maybe a known and understood feature, but I didn't find it in the alog with my searching (maybe the wrong search words?).

I notice that there is noise in HAM2, HAM3, HAM4, and HAM6 around 41.3Hz, and the elevated noise level goes from 41Hz to about 41.6Hz.

This noise is not present in the 1 Dec 2016 plots, there seems to be hint of it in the 14 Dec 2016 plots, and it's clearly visible in the 1 Jan 2017 plots.

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cheryl.vorvick@LIGO.ORG - 14:36, Sunday 08 January 2017 (33091)
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richard.mittleman@LIGO.ORG - 07:25, Monday 09 January 2017 (33100)
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good catch cheryl, when you see fun cps signals, can you check the inertial sensor signals (HEPI and ISI) also, to make sure that it is motion and if so of what?

thanks

hugh.radkins@LIGO.ORG - 13:56, Thursday 12 January 2017 (33182)
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Looks too that ITMX has some broadband elevated noise on Stage1 V1 and Stage2 H1.  We may need to cycle board power/seating if it persists.

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