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Forum: Geometry
Re: None Question on warnings from examples/extended/persistency/P03/ (Peter Mardahl)
Re: Feedback Re: Question on warnings from examples/extended/persistency/P03/ (Pedro Arce)
Date: 01 Jun, 2010
From: Peter Mardahl <Peter Mardahl>

Thank you for answering.

I have not modified geant4.9.3.p01 except in ONE respect.  I verified
this by checksumming the files in the example dir and comparing it with
the original files.  

My change is:
> cp g4geom_assembly.txt g4geom.txt

This is so I could run the textGeom executable on the assembly geometry
example.

When I did this, I got the following warnings from textGeom, toward the
top of quite a lot of output from geant4:


*** G4Exception : Two world volumes found, second will be taken
      issued by : G4tgrVolumeMgr::GetTopVolume()
Both volumes are at the top of a hierarchy: world & vol1
*** This is just a warning message.

*** G4Exception : Two world volumes found, second will be taken
      issued by : G4tgrVolumeMgr::GetTopVolume()
Both volumes are at the top of a hierarchy: vol1 & vol2
*** This is just a warning message.

*** G4Exception : Two world volumes found, second will be taken
      issued by : G4tgrVolumeMgr::GetTopVolume()
Both volumes are at the top of a hierarchy: vol2 & vol3
*** This is just a warning message.

*** G4Exception : Two world volumes found, second will be taken
      issued by : G4tgrVolumeMgr::GetTopVolume()
Both volumes are at the top of a hierarchy: vol3 & world
*** This is just a warning message.


Despite these warnings, the geometry does seem to have been inserted in
GEANT4.  Are these truly of concern, and if so, how do I fix the example
g4geom_assembly.txt so that this problem does not occur?

Thanks,

--PeterM

-----Original Message-----
From: Pedro Arce [mailto:pedro.arce@cern.ch] 
Sent: Saturday, May 29, 2010 3:27 PM
To: geometry-g4hn@slac.stanford.edu
Subject: Re: Question on warnings from
examples/extended/persistency/P03/


*** Discussion title: Geometry

Hi Peter,

You should worry, because it means the volumes vol1,2,3 are not placed
in the world. But I have run the example on geant4.9.3.p01 and I do not
find that problem. Could you please recheck that you are using the
original code?

Pedro

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1 Feedback: Re: RE: Question on warnings from examples/extended/persistency/P03/   (Pedro Arce - 04 Jun, 2010)
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