Figure 10
For these measurements the SLS power is essentially turned off (except linac and sublimation pumps, controls sensors and computers). Top panel: mechanical noise, along the vertical axis measured with a seismic sensor placed on the bending magnet. Middle and bottom panels: vertical and horizontal normalized optical noise power density, respectively, measured with a 4Q sensor near a focal point, using a laser beam aligned through the main optical axis of the beamline.  [article HTML]