########## Particles ##########
/run/numberOfThreads 63
/run/initialize
/gps/particle ion
/gps/ion 55 137 0 0
###############################
/gps/energy 0.0 eV
/gps/pos/type Volume
/gps/pos/shape Cylinder
/gps/pos/centre .0 .0 40 mm 
/gps/pos/radius 2 mm
/gps/pos/halfz 0.4 mm
 /gps/ang/type iso
########## Number of particles ##########
/run/printProgress 1000
/run/beamOn 10000000