Figure 2
Photon flux measured on the beamline at different dates during the first year of operation. The red spectrum (continuous line) was measured in December 2008 just before the cleaning procedure was applied to the first mirrors. The dramatic transmission reduction observed around 1 keV disappeared after cleaning as shown by the continuous black line. The blue, magenta and black empty dots transmission curves were measured after 17, 23 and 25 days operation, respectively. |