This afternoon, with the help of the Nikhef group, we performed some noise injections on the External Injection Bench, with same parameters than the one made back in August (entry 46659). The aim is to see if there is a different coupling of the scattered light into PRCL after the intervention on the EIB (47129).

A line at 0.5 Hz has been injected on each degree of freedom for a duration of 120 s. The effect on PRCL is stronger when injecting on x and z (plot 1 and 2).

At a first glance the coupling doesn't seem to be different from 46720 (plots 3 and 4), but a deeper analysis will follow.