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[ Identification  Description  Input parameters  Output parameters  Links ] The
Model of an undulator source

Name  Unit  Description  Default 

verbose  if nonzero, output extra information.  0  
E0  keV  Center of emitted energy spectrum (overrides lambda0).  0 
dE  keV  Halfwidth of emitted energy spectrum.  0 
phase  Initial phase of radiation.  0  
randomphase  If !=0 phase will be random (I.e. the emitted radiation is completely incoherent).  1  
Ee  GeV  Storage ring electron energy [typically a few GeV).  2.4 
dEe  Relative electron energy beam spread (sigma/Ee).  0  
Ie  A  Ring current.  0.4 
tbunch  s  Bunch length. 0 means continous source.  0 
t0  s  Delay of the first bunch from t=0.  0 
B  T  Peak magnet field strength. Overrides K.  0 
K  Dimensionless undulator parameter.  0  
gap  m  Undulator gap. If > gap_min the actual magnetic field strength is < B. Currently ignored.  1e3 
Nper  Number of magnetic periods in the undulator.  1  
lu  m  Magnetic period length of the undulator.  16e3 
sigey  m  Electron ring beam size in vertical plane (rms).  0 
sigex  m  Electron ring beam size in horizontal plane (rms).  0 
sigepx  rad  Electron ring beam horizontal divergence (rms).  0 
sigepy  rad  Electron ring beam vertical divergence (rms).  0 
focus_xw  m  Width of target window.  0 
focus_yh  0  
dist  m  Distance from source plane to target window along the optical axis.  1 
gauss_t  0  
quick_integ  if nonzero, use faster (but less accurate) integration scheme.  0  
E1st  keV  Energy of the fundmental (1st) undulator harmonic.  0 
Name  Unit  Description  Default 

prms  
alpha  
MELE 
Undulator.comp
.
[ Identification  Description  Input parameters  Output parameters  Links ]
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