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Forum: Geometry
Re: None tessellated in gdml (andrea lucaroni)
Date: 13 Jan, 2016
From: Gabriele Cosmo <Gabriele Cosmo>

Hi Andrea,

you may want to try GRAS with the latest Geant4 release, 10.2, as
previously the computation of the geometrical volume for a
tessellated solid was not done with a precise formula.

Hope it helps,

Cheers, Gabriele

------------
On Wed, 23 Dec 2015 13:01:16 GMT, andrea lucaroni wrote:
> Dear all
> 
> i have a geometry in gdml format.
> I created this geometry with Instep, the code is loaded correctly, but it
> seems that the volumes are empty, when i run with gras, i'm reporting under
> the line of analysis of geometry by gras.
> 
> [GRASGeometryUtil::ListLogicalVolumes]: 471 volumes in the store
>    Volume <CSP_1_vol>   Material: Al   Mass: [kg] 1.62854e-12   ([kg]
> 1.62854e-12  including sub-tree)
>    Volume <CSP_2_vol>   Material: Si   Mass: [kg] 8.45983e-13   ([kg]
> 8.45983e-13  including sub-tree)
>    Volume <CSP_3_vol>   Material: Al   Mass: [kg] 1.16744e-14   ([kg]
> 1.16744e-14  including sub-tree)
>    Volume <CSP_4_vol>   Material: Al   Mass: [kg] 1.1665e-14   ([kg]
> 1.1665e-14  including sub-tree)
>    Volume <CSP_5_vol>   Material: Al   Mass: [kg] 5.7097e-14   ([kg]
> 5.7097e-14  including sub-tree)
>    Volume <CSP_6_vol>   Material: Si   Mass: [kg] 5.25532e-13   ([kg]
> 5.25532e-13  including sub-tree)
>    Volume <CSP_7_vol>   Material: Al   Mass: [kg] 4.4183e-14   ([kg]
> 4.4183e-14  including sub-tree)
> 
> for example:
> mass of CSP_2_vol must be about 4e-3 kg not   8.45983e-13 kg
> 
> Are there commands from put in the gdml file to consider the solid volumes ?
> 
> thanks
> best regardes
> Andrea

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