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Interferometer_sensitivity_studies (General)
fiori, swinkels - 16:13 Friday 27 August 2010 (27553) Print this report
magnetic noise projection, based on long coherence
Plots show a projection of magnetic noise using the same technique described in Magnetic projection of all buildings, which is based on computing the coherence with magnetometers (max of thee components) and projecting the sqrt(coherence)*hrec. Here coherence has been averaged over one 24h-lock lock with 6-to-7Mpc horizon between August 19 and 20th.
With respect to VSR2 (Magnetic projection of all buildings) seems we have less magnetic noise contributing to the sensitivity. This is particularly evident for the bumps around 50Hz and 150Hz.
One magnetic line at 43.6 Hz (and its 1st harmonic at 87.3 Hz) is coming from WE, maybe originating from another electronics fan.
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