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Question coordinate/unit of points in G4Navigator::ComputeStep() etc. 

Keywords: coordinates units overlapping volumes
Forum: Geometry
Date: 25 Apr, 2006
From: Kazuyoshi Furutaka <Kazuyoshi Furutaka>

Hi all,

In my application I got warnings suggesting geometry problems:
  WARNING - G4Navigator::ComputeStep()
            Track stuck, not moving for 10 steps
            in volume -<volume name>- at point (x,y,z).
            Potential geometry or navigation problem !
            Trying pushing it of 9e-10 mm ...

So I built the application with surface-check of G4PVPlacement
set true.  Then I got warnings like the following:
  WARNING - G4PVPlacement::CheckOverlap()
            Overlap is detected for volume <volume name>
            with its mother volume <mother name>
            at point (xx,yy,zz)

What are the units for these coordinate values?
(baasic unit, mm?)
In which coordinate system these values are given?

Thanks in advance.


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1 Feedback: Re: coordinate/unit of points in G4Navigator::ComputeStep() etc.   (Vladimir Grichine - 27 Apr, 2006)
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