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Idea Re: GPS confine and GDML 

Forum: Geometry
Re: Question GPS confine and GDML (bilal)
Re: None Re: GPS confine and GDML (Witek Pokorski)
Date: 07 Mar, 2013
From: Michael H. Kelsey <Michael H. Kelsey>

On Thu, 07 Mar 2013 14:43:01 GMT, Witek Pokorski wrote:
> How to you attach your sources to the volumes? Do you do it by name of
> the volume? Could it be that the names of the volumes are different when
> you build the geometry from GDML or from C++?

Hi, Witek. The volume binding (confinement) in GeneralParticleSource is done by name. Generally the user configures it at the macro level.

One of the problems with GDML (at least, the problem with _exporting_ GDML for distribution from a native GEANT4 geometry) is that the volume names aren't necessarily constant. Specifically, when you export GDML, the volume names generated start with the user's assigned names, but also have the hexadecimal pointer address appended!

If this user wrote their GPS macros without those (run dependent) pointers as part of the name strings, then their macro won't work. IMHO, the exported GDML ought to match the original GEANT4.

  -- Mike

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1 None: Re: GPS confine and GDML   (Witek Pokorski - 07 Mar, 2013)
2 None: Re: GPS confine and GDML   (bilal - 07 Mar, 2013)
1 None: Re: GPS confine and GDML   (Mike Kelsey - 07 Mar, 2013)
(_ Ok: Re: GPS confine and GDML   (bilal - 07 Mar, 2013)
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