GPS Command Example 5:

/gps/particle geantino
/gps/pos/type Plane
/gps/pos/shape Ellipse
/gps/pos/centre 3. 1. 0. cm
/gps/pos/halfx 1. cm
/gps/pos/halfy 2. cm
/gps/ang/type iso
/gps/ene/type Brem
/gps/ene/min 2. MeV
/gps/ene/max 10. MeV
/gps/ene/temp 2e12

Resulted Distribution Plots: