Figure 7
(a) Set of ten independent undulator pink-beam measurements recorded successively; the jitter amplitude on the side of the undulator shape reaches 8.4%. (b) Same set of data after application of the phase correction procedure; the dispersion is now 2.4%, i.e. a reduction by a factor of 3.5. Note that the position and shape of the atomic sharp lines coming from the beamline gas filter are not affected. |