I frequently use the focused source (
/gps/ang/type focused) with a
focus point and an appropriate surface from which particles originate.
Is there a smart way to have a designated area being irradiated from said focuspoint?
up to now, I manually calculate the needed geometry, and place it “behind” the focuspoint… I would fancy a way of “reversing” the beam direction, and start from the focuspoint.
what I have:
/gps/particle gamma /gps/pos/type Plane /gps/pos/shape Rectangle /gps/pos/halfx 6.53 mm /gps/pos/halfy 7.53 mm /gps/pos/centre -4100 0 0 mm /gps/ang/type focused /gps/ang/focuspoint -4000 0 0 mm /gps/pos/rot1 0 1 0 /gps/pos/rot2 0 0 1
what I fancy:
/gps/particle gamma /gps/ang/type focusedInverse /gps/ang/focuspoint -4000 0 0 mm /gps/target <physical Volume> or /gps/target <Plane (with appropriate halfx/y and pos)>