/control/verbose 0
/tracking/verbose 0
/event/verbose 0
/run/initialize
/gps/particle gamma
/gps/verbose 2
/gps/type Plane
/gps/shape Rectangle
/gps/centre 0. 2. 1. cm
/gps/halfx 1. cm
/gps/halfy 3. cm
/gps/angtype iso
/gps/energytype Pow
/gps/emin 2. MeV
/gps/emax 10. MeV
/gps/alpha 2.
/run/beamOn 10000