Conical Section

A conical section can be constructed using C++ or some simple text:

:volu cons CONS
 8  // inner r in mm @ - half z
 20 // outer r in mm @ - half z
 5  // inner r in mm @ half z
 10 // outer r in mm @ half z
 20 // half z in mm
 0  // phi0 in degree
 270// dphi in degree
 G4_Cu // material

The full source code is in detector.tg, which can be visualized using the macro file mingle.mac or gears.mac, assuming an universal Geant4 application, such as MinGLE or GEARS, is available:

git clone https://github.com/jintonic/geant4
cd geant4/detector/CSG/cons
# generate animated picture, cons.gif
G4VIS_DEFAULT_DRIVER=TSG_FILE gears gears.mac