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None Boundaries and G4BREPSolidPolyhedra 

Keywords: boundary condition inner volumes
Forum: Geometry
Date: 17 Jul, 2005
From: Denis Rosset <>

Hello, I'm using G4BREPSolidPolyhedra to model a hollowed prism with an hexagonal base (nSides=6, rMin,rMax>0). Several of these solids (with the same shape, and different radiuses) must be embedded inside each other. Unfortunately, I cannot use mother-daughter relationships because of a complex hole in the middle of the detector. I'm using a big World volume where I'm embedding all the objects. Unfortunately, the boundaries of several solids (all children of World) are touching themselves. Does this count as a geometry violation ? The ugly solution is to use a small gap between each solid. Is there another way ? The example TestEm03 seems to have several rings in this configuration and there aren't any problems.

Is there a way out of there ?


Denis Rosset

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1 None: Re: Boundaries and G4BREPSolidPolyhedra   (Radovan Chytracek - 18 Jul, 2005)
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