Problem 914 - G4Exception: StuckTrack issued by G4Navigator with ellipsoids
Summary: G4Exception: StuckTrack issued by G4Navigator with ellipsoids
Status: RESOLVED WORKSFORME
Alias: None
Product: Geant4
Classification: Unclassified
Component: geometry (show other problems)
Version: other
Hardware: PC Linux
: P1 normal
Assignee: Vladimir.Grichine
URL:
Depends on:
Blocks:
 
Reported: 2006-11-29 11:38 CET by Susanna.Guatelli
Modified: 2006-12-01 09:14 CET (History)
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Description Susanna.Guatelli 2006-11-29 11:38:43 CET 
The error is with geant4-08-02-cand02.
Experimental set-up: electrons are incident on an ellipsoid
defined as G4Ellipsoid(G4String name, ax, by, cz, zcut1, zcut2), filled with
water. The ellipsoid is set in a world volume (filled with air).
The physics is active for e-, e+, photons.

Events are aborted with the following message:
-----------------------------
**G4Exception: StuckTrack
  issued by G4Navigator::ComputeStep()
StuckTrack: potential geometry or navigation problem
*** Event must be aborted
-----------

/afs/cern.ch/user/g/guatelli/public/ellipsoid/N01.tgz contains a simple G4
application that shows the problem. run_e-_geant4.8.2.cand02.out is an example
of output file (with the list of aborts).
500K primary particles have been generated.
Comment 1 Vladimir.Grichine 2006-12-01 08:58:59 CET 
In application /afs/cern.ch/user/g/guatelli/public/ellipsoid/N01.tgz
there is bug in primary generator resulting
to generation of particles out of world. After fixing that
the application works without any messages.