Figure 4
(a) Energy shift between the undulator and monochromator energies for some Turboscans without PID controller (thick lines) and with PID controller (thin lines and short-dashed line) (energy velocity about 0.5 eV s−1). (b) Flux loss for the corresponding scans without (thick lines) and with (thin lines and short-dashed line) PID. (c) Undulator flux peak profile when the energy of the undulator is tuned at 850 eV as a function of the energy shift between the undulator and the monochromator. |