benchmarked against laser-Compton scattering
experiments performed at HIcS of Duke University and
PLEIADES from LLNL, was used to predict the properties of the
SLEGS c-beam. Then the simulated c-beam parameters including
the spectral, transversal profiles and angular distributions were
delivered to the particle gun of the Geant4. Accordingly, the simulation
of the c-ray beam irradiating the 135Cs target, taking into
account the standard electromagnetic physics list, particle transportation
and the potential photonuclear reactions were performed
by the Geant4 toolkit