hugh.radkins@LIGO.ORG - posted 10:12, Wednesday 08 June 2016 - last comment - 08:32, Thursday 09 June 2016(27648)
H1 ITMX ISI Stage1 V1 CPS Still Noisy
As I reported in 27622, the elevated noise is still present in the Stage1 V1 CPS of the ITMX. We should try a power cycle of the chassis at earliest opportunity. I don't have access to DetChar at the moment to see if this noise is impacting the ISI performance.
It is very likely that a noisy vertical sensor will create excess noise in the horizontal direction, particularly if the 45mhz blends are being used
I'm going to guess that a power cycle isn't going to help, I would consider swapping the electronics
But Rich, If you look at the history in the plots and words, you see that this type of noise has come and gone. The noise on this channel wasn't there before the power outage cycle and the others that were present have gone away.