Figure 2
The schematic diagram shows the working principle of the SXFEL online spectrometer. (a) The grating VLSG1 operates at a photon energy of 100 eV, where the detector plane is set at an angle of 73.3° with respect to the first-order diffraction beam. (b) The grating VLSG2 operates at a photon energy of 500 eV, where the detector plane is at an angle of 24.6° with respect to the first-order beam. |