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Forum: Geometry
Re: None Beginner Question : overlap of mother (David Sarria)
Re: None Re: Beginner Question : overlap of mother (John Apostolakis)
Date: 22 Aug, 2016
From: David Sarria <David Sarria>

Dear John,

Thanks for your comprehensive anwser. If I understood well, I can't be sure that the tracking in my geometry is done correctly.

However, when I launch geantinos (or photon or electrons), I don't get any overlap/tracking message error. Does it mean it is ok ?

As I wrote above, I have two types of overlaps. To make it clear I attached two pictures to this message.

Is there a way to tell GEANT4 that these vacum volumes is just "dummy", only used to make 4 copies of the same volumes it contains (and to have a clear code); and just not consider it as a physical volume ?

Also what I tried to do is to make the solid volume of the "dummy" vacuum box to be a precise enveloppe of what it contains. To do so, I need to make the Union solid of several boxes. And I get an error message after trying to make a union of two union solids (each of them being the union of 2 boxes). The error does not come out during compilation time or when the geometry is built, but when I try to visualize the detector. Is it normal ? I mean, is it normal that union solids can't go futher than the union of 3 boxes ?

Thanks in advance.

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/08/22/06.21-8839-overlap1.png
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/08/22/06.21-55434-overlap2.png

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1 None: Re: Beginner Question : overlap of mother   (David Sarria - 22 Aug, 2016)
(_ None: Re: Beginner Question : overlap of mother   (John Apostolakis - 24 Aug, 2016)
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