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Forum: Geometry
Re: Question Minimum Size of a Volume (Matt Worden)
Date: 27 May, 2011
From: Gabriele Cosmo <Gabriele Cosmo>

If you get the error message from the solid, that means you're defining a
solid with dimensions smaller than the allowed geometrical tolerance, which,
by default is set to the order of 1E-9*mm (unless you explicitly set it in your

Cheers, Gabriele

On Fri, 27 May 2011 07:11:06 GMT, Matt Worden wrote:
> I was wondering, what is the minimum size of a volume that Geant can
> handle?
> I ask because a particle detector I have been designing in Geant4 has a
> radius of .1mm.
> Now I am trying to model a simple cube of the same half length and I am
> getting a core dump with a message saying that the dimensions are too
> small.
> I am confused since I have been using a geometry of this size for a long
> time now with no problem.
> And insight?
> Thanks for your time

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