1. GEANT4: Inner Poly Shield
Prepared by Ron Ferril
For Harry Nelson

2. Steps to Defining an Object
Define a Material
Define a Shape
Define a Logical Volume
Shape
Material
Define a Physical Volume
Placement

3. Material //Poly density = 0.935*g/cm3; G4Material* poly=
new G4Material(name="Poly", // A label "Poly"
density, // Density of material
ncomponents=2); // Number of elements
poly->AddElement(H,natoms=2); // First element H
poly->AddElement(C,natoms=1); // Second element C

4. Shape G4Tubs* solidpolyinnerside= new G4Tubs( "polyin1", // Label
33.655*cm,41.275*cm,35.56*cm, // Inner, outer,
// half height
0.*deg,360.*deg); // Arc: start, end

5. Logical Volume G4LogicalVolume* logicpolyiside= new G4LogicalVolume(
solidpolyinnerside, // The shape
poly, // The material
"lpolyiside"); // A label

6. Physical Volume G4PVPlacement* physpolyiside= new G4PVPlacement(
0, // No rotation.
G4ThreeVector(), // Centered in the world.
"innerpolyside", // A label.
logicpolyiside, // The logical volume.
physiWorld, // Inside the world volume.
false, // No boolean operations.
0); // No field for volume.

7. Additional Tools Rotations Boolean Solids Assembly Volumes
Union Solids
Subtraction Solids
Assembly Volumes