/gps/particle geantino
/gps/pos/type Volume
/gps/pos/shape Cylinder
/gps/pos/centre 2. 2. 2. cm
/gps/pos/radius 2.5 cm
/gps/pos/halfz 4. cm
/gps/ang/type iso
/gps/ene/type Pow
/gps/ene/min 0.01 MeV
/gps/ene/max 100 MeV
/gps/ene/alpha -2.5


# commands below are independent of gps
#
/analysis/filetype root
/analysis/filename test35a.root
/analysis/maxeng 100 MeV
/analysis/mineng 0.01 MeV
/analysis/maxpos 8 cm 
/analysis/minpos -8 cm
/event/printModulo 10000
#/control/execute display.mac
/run/beamOn 100000

/analysis/filename test35b.root
/gps/ene/biasAlpha -1.
/run/beamOn 100000