Figure 4
Black curve: photon flux for the entire energy range, measured at sample on the SMS branch with an exit slit of 20 µm, 1221 lines mm−1 grating, cff = 2.25 and angular beamline acceptance of 124 µrad (h) × 62 µrad (h). Red curve: ray-tracing calculation with the same parameters. Several jumps in the curve are due to the harmonic switching. Blue curve: measurement with the same parameters with the new 400 lines mm−1 grating. |