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Forum: Geometry
Re: Question multiUnion option in GDML (Elias Roussos)
Date: 27 Jul, 2014
From: Gabriele Cosmo <Gabriele Cosmo>

Hi Elias,

Multi-union structures are not yet supported in Geant4.
They will be supported starting from release 10.1.
You can in any case use normal Boolean unions.

Cheers, Gabriele

On Sun, 27 Jul 2014 10:06:25 GMT, Elias Roussos wrote:
> Hi,
> I am trying to build a geometry using, amongst others, the multiUnion
> option from the latest version of GDML (3.1.0), but I get an error
> (G4GDMLReadSolids::SolidsRead() Unknown tag in solid: multiUnion).
> I downloaded the latest GDML schema and point to them in the start of
> the gdml file, but the error is still coming up. Does this mean I need
> to make a new installation of GEANT4? I think the multiUnion option was
> introduced later than the GEANT4 version I have installed (4.9.6p2). Is
> there a way to update this installation, just to get the new GDML
> libraries (if that is the problem)?
> Otherwise, can I make boolean operations in earlier versions of GDML
> between a solid and a boolean solid?
> Thanks,
> Elias

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1 Idea: Re: multiUnion option in GDML   (han - 31 Jul, 2014)
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