|Message: RE: Multiple Geometry Updates Necessary?||Not Logged In (login)|
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Given you started with TestEm5, I presume you delete all volumes before you re-build the new geometry. Your symptom sounds like your detector construction has either 1) not deleting / instantiating all the volumes properly or 2) some volumes overlaps on each other. If you are using just G4PVPlacement, try the optional geometry checking flag. (and do not forget to set it back to false when you finish) Makoto > -----Original Message----- > From: Daniel Mittelberger [mailto:firstname.lastname@example.org] > Sent: Wednesday, May 30, 2007 11:24 AM > To: publichypernews > Subject: Re: Multiple Geometry Updates Necessary? > > *** Discussion title: Geometry > Email replies to PublicHyperNews@slac.stanford.edu must include: > In-Reply-To: <"/geometry/733/1/1"@geant4-hn.slac.stanford.edu> > Subject: ...change this to be about your reply. > > I do not believe the second run starts with the same seed, but the > difference between runs is greater that just small variations. In some > runs, energy is deposited in the detector as it should be, > but in others > all of the events deposit zero energy. Visualizing the system using > OGLIX, it looks like the detector after being updated has a strange > geometry. Rather than being a cylinder, it looks like several circles > and lines that do not form any recognizable shape. Then > updating again, > it looks like it should, as a cylinder. >
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