Generic ComponentsΒΆ
You can create a Geometry Component for any of the standard solids defined in the geometry section of the Geant4 Application Developers Guide.
The ShapeTestWithAllParameters.txt example demonstrates how to build each of the solids.
Below we list the parameters for each Geant4 solid. Further details about the parameters, along with helpful diagrams, can be found in the Geant4 Application Developers Guide. For most solids, sizes are specified in Half Lengths, denoted with an HL, such as HLX. For a few solids, sizes are specified in full Lengths, denoted with just L, such as LX.
Note
The TsBox, TsCylinder and TsSphere should be used instead of G4Box, G4Tubs and G4Sphere respectively. See Dividable Components.
Some examples of components that can be built just from Generic Components:
- Scatterer
- Collimator
- Mirror
- Water Tank
- Rando Phantom (as constructive solid geometry rather than DICOM import)
- Pin Diode Chamber
- Flat Panel Imaging Device
- Standard Ion Chamber
- Segmented Ion Chamber
- Faraday Cup
We have built some complex things just from combinations of the Generic Components (such as the STAR radiosurgery beamline at MGH).
| Type | Parameters | Type | Default value |
|---|---|---|---|
| G4CutTubs | RMin
RMax
HL
SPhi
DPhi
LowNorm
HighNorm
|
d
d
d
d
d
uv (3)
uv (3)
|
0 cm
0 deg
360 deg
|
| G4Cons | RMin1
RMax1
RMin2
RMax2
HL
SPhi
DPhi
|
d
d
d
d
d
d
d
|
0 cm
0 cm
0 deg
360 deg
|
| G4Para | HLX
HLY
HLZ
Alpha
Theta
Phi
|
d
d
d
d
d
d
|
|
| G4Trd | HLX1
HLX2
HLY1
HLY2
HLZ
|
d
d
d
d
d
|
|
| G4RTrap | LZ
LY
LX
LTX
|
d
d
d
d
|
|
| G4GTrap | HLZ
Theta
Phi
HLY1
HLX1
HLX2
Alp1
HLY2
HLX3
HLX4
Alp2
|
d
d
d
d
d
d
d
d
d
d
d
|
|
| G4Orb | R
|
d
|
|
| G4Torus | RMin
RMax
RTor
SPhi
DPhi
|
d
d
d
d
d
|
0 cm
0 deg
360 deg
|
| G4HPolycone | PhiStart
PhiTotal
Z
RInner
ROuter
|
d
d
dv (N)
dv (N)
dv (N)
|
|
| G4SPolycone | PhiStart
PhiTotal
R
Z
|
d
d
dv (N)
dv (N)
|
0 deg
360 deg
|
| G4HPolyhedra | PhiSTart
PhiTotal
NSides
Z
RInner
ROuter
|
d
d
i
dv (N)
dv (N)
dv (N)
|
0 deg
360 deg
|
| G4SPolyhedra | PhiSTart
PhiTotal
NSides
R
Z
|
d
d
i
dv (N)
dv (N)
|
0 deg
360 deg
|
| G4EllipticalTube | HLX
HLY
HLZ
|
d
d
d
|
|
| G4Ellipsoid | HLX
HLY
HLZ
ZBottom
ZTop
|
d
d
d
d
d
|
-HLZ cm
+HLZ cm
|
| G4EllipticalCone | HLX
HLY
ZMax
ZTop
|
d
d
d
d
|
ZMax cm
|
| G4Paraboloid | HLZ
R1
R2
|
d
d
d
|
|
| G4Hype | IR
OR
IS
OS
HLZ
|
d
d
d
d
d
|
0 cm
0 deg
|
| G4Tet | Anchor
P2
P3
P4
|
dv (3)
dv (3)
dv (3)
dv (3)
|
|
| G4Extruded | Polygons
HLZ
Off1
Scale1
Off2
Scale2
|
dv (2N)
d
dv (2)
uv (2)
dv (2)
uv (2)
|
|
| G4TwistedBox | Twist
HLX
HLY
HLZ
|
d
d
d
d
|
|
| G4RTwistedTrap | Twist
HLX1
HLX2
HLY
HLZ
|
d
d
d
d
d
|
|
| G4GTwistedTrap | Twist
HLZ
Theta
Phi
HLY1
HLX1
HLX2
HLY2
HLX3
HLX4
Alpha
|
d
d
d
d
d
d
d
d
d
d
d
|
|
| G4TwistedTrd | HLX1
HLX2
HLY1
HLY2
HLZ
Twist
|
d
d
d
d
d
d
|
|
| G4GenericTrap | HLZ
Vertices
|
d
dv (2N)
|
|
| G4TwistedTubs | Twist
EndInnerRad
EndOuterRad
HLZ
Phi
|
d
d
d
d
d
|