Reports until 10:01, Thursday 25 February 2016
H1 SEI
jim.warner@LIGO.ORG - posted 10:01, Thursday 25 February 2016 - last comment - 10:34, Thursday 25 February 2016(25713)
Bad CPS at ETMY

Looks like there is a failing CPS at ETMY. I noticed on the Detchar sumary page, ETMY was not performing as well as the other BSCs above 1 hz, and has been for a little while (since about Feb 2nd). When I started looking at spectra, I saw that the Y CPS blend in was high at high frequency, digging down to individual sensors, it looks like ST2 H3 is to blame. LLO had a similar failure last year sometime. We should be able to stick a new card in and still run okay, or maybe we just need to check some connections. Probably not a big deal for now, but we should address this soon. Attached plots shows the CPS for St2 (first plot) and St1(second). Green on the first plot is the bad sensor. The St1 sensors look okay, though H2 (blue, second plot) looks a little high as well.

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hugh.radkins@LIGO.ORG - 10:34, Thursday 25 February 2016 (25715)

FRS 4424