sheila.dwyer@LIGO.ORG - posted 17:45, Tuesday 30 June 2015 - last comment - 10:41, Wednesday 01 July 2015(19401)
MC2 M3 LL zero crossing glitches
I sent a small excitation into MC2 M3 LL last night (29/06/2015 22:37 UTC) and again today after the autocalibration was done (7/1/2015 00:35 UTC).
The attached screenshot shows the voltmon channel, both before and after. There isn't a clear difference, it seems like there could be a discontinuity at the zero crossing in both cases, but it is not obvious from the time series if things are better or not after the autocalibration.
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Hi Sheila, looks like your autocal did reduce the glitches somewhat between those two times. In the attached file I used the NOISEMON channels in the frames. But you could also watch the FASTIMON channels during injections from on site (thanks TJ).
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