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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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