FEL beam parameters

Electron energy Photon energy range
[GeV] [keV]
8.5 0.24–1.08
11.5 0.45–1.98
14.0 0.66–2.94
16.5 0.92–4.08
17.5 1.03–4.59

From “Photon beam properties at the European XFEL Saturation Tables (December 2018 revision)” by E.A. Schneidmiller and M.V. Yurkov.