:start run control:
ncase = 1e5 # The number of histories to simulate
:stop run control:

:start geometry definition:

    ## big air box
    :start geometry:
        name     = air_box
        library  = egs_box
        box size = 200  200 400
        :start media input:
            media = AIR700ICRU
        :stop media input:
    :stop geometry:

    ############################################################################v
    ### conveyor
    ############################################################################

    ### conveyor channel
    :start geometry:
        name     = conveyor
        library  = egs_ndgeometry
        type     = EGS_XYZGeometry
        x-planes = -35.15 -34.95 34.95 35.15
        y-planes = -64 -63.7 63.7 64
        z-planes = -40 0.25 0.75 2 29.7 40
        :start media input:
            media = STEEL700ICRU AIR700ICRU
            set medium = 4 1
            set medium = 22 1
            set medium = 28 1
            set medium = 31 1
            set medium = 34 1
        :stop media input:
    :stop geometry:

    ### hole in top
    :start geometry:
        name     = hole
        library  = egs_ndgeometry
        type     = EGS_XYZGeometry
        x-planes = -32.2 32.2
        y-planes = -22.7 22.7
        z-planes = 29 39
        :start media input:
            media = AIR700ICRU
        :stop media input:
    :stop geometry:

    ### conveyor with hole
    :start geometry:
        name    = hole_in_conveyor
        library = egs_genvelope
        base geometry = conveyor
        inscribed geometries = hole
    :stop geometry:

    ### conveyor in air
    :start geometry:
        name    = converyor_box_in_air
        library = egs_genvelope
        base geometry = air_box
        inscribed geometries = hole_in_conveyor
    :stop geometry:


    ############################################################################
    ### radiation box
    ############################################################################

    ### radiation box
    :start geometry:
        name     = radiation_box
        library  = egs_ndgeometry
        type     = EGS_XYZGeometry
        x-planes = -32.5 -32.2 32.2 32.5
        y-planes = -23 -22.7 22.7 23
        z-planes = 0 85.2 85.5
        :start media input:
            media = STEEL700ICRU AIR700ICRU
            set medium = 4 1
        :stop media input:
    :stop geometry:

    ### radiation box in air
    :start geometry:
        name    = radiation_box_in_air
        library = egs_genvelope
        base geometry = air_box
        inscribed geometries = radiation_box
    :stop geometry:


    ############################################################################
    ### shield
    ############################################################################

    ### shield
    :start geometry:
        name     = shield
        library  = egs_ndgeometry
        type     = EGS_XYZGeometry
        x-planes = -35.15 35.15
        y-planes = -15 15
        z-planes = -1 10
        :start media input:
            media = PB700ICRU
        :stop media input:
    :stop geometry:

    ### shield in air
    :start geometry:
        name    = shield_in_air
        library = egs_genvelope
        base geometry = air_box
        inscribed geometries = shield
    :stop geometry:


    ############################################################################
    ### machine
    ############################################################################

    ### machine planes
    :start geometry:
        name      = machine_planes
        library   = egs_planes
        type      = EGS_Zplanes
        positions = -100 0 30 100
    :stop geometry:

    ### machine
    :start geometry:
        name    = machine
        library = egs_cdgeometry
        base geometry = machine_planes
        set geometry = 0 shield_in_air
        set geometry = 1 converyor_box_in_air
        set geometry = 2 radiation_box_in_air
    :stop geometry:

    # ### simulation geometry
    simulation geometry = machine

:stop geometry definition:

################################
### SOURCE
################################
:start source definition: # Only 1 source definition block allowed
    ### Pencil beam
    :start source:
        name = pencil_beam # This name can be anything you like
        library = egs_parallel_beam
        charge = 0
        direction = 0 0 -1
        :start spectrum:
            type = monoenergetic
            energy = 10
        :stop spectrum:
        :start shape:
            type = box
            box size = 3 3 1
        :stop shape:
    :stop source:
    ### Use the source by this name for the simulation
    simulation source = pencil_beam
:stop source definition:

:start scoring options:
    calculation type = dose
    :start calculation geometry:
        geometry name = machine
        cavity regions = 1
        cavity mass = 100000
    :stop calculation geometry:
:stop scoring options: