Hello everyone

i am using Gate to simulate an electron Beam toward a water cube , and i want to have information about deposition of energy in the cube . so i used the option Dose Actor.

but i can not understand my root plot.

i attached the actor to my target volume but i can not understand why i have energy values on position far from my volume.

here in my world , target volume position beam directory and my actor :

# World

/gate/world/geometry/setXLength 2 m

/gate/world/geometry/setYLength 2 m

/gate/world/geometry/setZLength 2 m

/gate/world/setMaterial Air

# Water Box

/gate/world/daughters/name waterbox

/gate/world/daughters/insert box

/gate/waterbox/geometry/setXLength 40 cm

/gate/waterbox/geometry/setYLength 40 cm

/gate/waterbox/geometry/setZLength 40 cm

/gate/waterbox/placement/setTranslation 50 0 0 cm

/gate/waterbox/setMaterial Water

# BEAMS

/gate/source/mybeam/gps/particle e-

/gate/source/mybeam/gps/pos/type Beam

/gate/source/mybeam/gps/direction 1 0 0

#Actor

/gate/actor/addActor DoseActor depthdose

/gate/actor/depthdose/save ../output/electron-depth.root

/gate/actor/depthdose/attachTo waterbox

/gate/actor/depthdose/stepHitType random

#/gate/actor/depthdose/setPosition 0 0 0 cm

/gate/actor/depthdose/setResolution 1000 1 1

and here is my root reslult:

thank you in advance ^^

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