format of the file : beam1.dat and beam2.dat

data formatted in ASCII :

1. The energy of the Macroparticle in GeV
2. x position at the intersection plane (microns)
3. y position at the intersection plane (microns)
4. z position within the bunch in micron
5. the angle x' i.e. the relativistic beta_x = vx/c (microradians)
6. the angle y' i.e. the relativistic beta_y = vy/c (microradians)

From the version 1.0.0 on, the 3 components of the polarization vector have been added, but uniquely in the case where the keyword bmt_precession=1 is switched on :

7. degre of polarization in the x transverse direction
8. degre of polarization in the y transverse direction
9. degre of polarization in the longitudinal direction (along the trajectory)