sheila.dwyer@LIGO.ORG - posted 12:55, Friday 30 January 2015 - last comment - 16:21, Friday 30 January 2015(16371)
something is wrong with ITMY L1 osem signal, more investigation into last nights lock losses
There is a problem with the signal from the ITMY OSEM, it was verry noisy durring the lock losses last night and it is still noisy now, this seems to be always this way.
The attached screen shots show the signals up the chain on each quad.
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It looks like the ITMy L1 stage UR sensor is the exact culprit.
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