/random/setSeeds 19577794 424238336
#setting number of cores
/run/numberOfThreads 2

/run/initialize

#settings
/control/verbose 0
/run/verbose 0
/tracking/verbose 0

#beam
/gps/particle gamma

#coordinate distribution (radial Gauss)
/gps/pos/centre 0. 0. -1. cm
/gps/pos/type Beam
/gps/pos/sigma_x 1 mm
/gps/pos/sigma_y 1 mm

#angular distribution (radial Gauss)
/gps/ang/type beam2d
/gps/ang/rot1 1  0  0
/gps/ang/rot2 0 -1  0
/gps/ang/sigma_x 1.E-3 rad
/gps/ang/sigma_y 1.E-3 rad

#energy distribution (constant)
/gps/ene/mono 100 GeV

#statistics
/run/printProgress 10
/run/beamOn 1000