|Message: Re: DNAPhysics: Ionisation coordinates out of box||Not Logged In (login)|
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On Mon, 13 Aug 2012 15:00:06 GMT, satya wrote:
> Hello Geant4 users, > > I have a query with regard to ionisation coordinates that are displayed > out of box when I executed DNAPhysics example in a 1cm ^(3) of box with > water. I ran a 1 MeV Proton beam and observed that some coordinates are > negative for example: X = -1.01e-06 mm = -1.01e-07 cm which I do not > understand because it is out of our box dimensions.
The geometry for a box has the origin of coordinates at the center. You supply _half-length_ dimensions for X, Y, and Z, and the coordinates run from -(half-length) to +(half-length) on each axis.
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