The air target and the vacuum guide are obtained using Rectangular Parallelepiped bodies with an edge Parallel to the propagation axis Z (RPP). The stainless steel flange is represented by an Infinite Circular Cylinder parallel to the axis Z (ZCC) cut by two planes perpendicular to this axis (XYP).
The matrices of TLDs are obtained using Rectangular Parallelepiped bodies with an edge Parallel to the axis Z (RPP). Such type of RPP is also used in order to define a vacuum region around the geometry and the black hole.