Interferometer_sensitivity_studies (General)Marque - 11:57 Tuesday 30 June 2009 (23410)
Print this reportbumps at 88HzSince the first relock after last summer shutdown, there are 2 big bumps in the sensitivity around 88Hz (see plot1). I checked that they were not present in May 2008.
These bumps are very stable in amplitude and moving a bit in frequency in the last 6 months (see plot2).
There exists no coherence between these bumps and any channel apart from B1_ACq where they are visible also.