FELs of Europe · Ming-Xie Model
FEL GAIN CALCULATOR
Saturation Power & Gain Length Estimator · Real-time
Input Parameters
MeV
keV
A
mm·mrad
mm
m
m
nm
Polarisation
Primary Results
Saturation Power
GW
Gain Length
3-D (Ming-Xie)
m
1-D (ideal)
m
Derived Quantities
Undulator K₀
Undulator a_w
Pierce parameter ρ%
Xie 3-D correction
Transverse beam size σ_xµm
e⁻ beam powerGW
Ming-Xie Degradation Params
Diffraction X_d
Emittance X_ε
Energy spread X_γ
Values near 0 → negligible degradation. Bar fills at value = 2.