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None GeomNav0003 Exception: What does this mean? 

Forum: Geometry
Date: 14 Apr, 2015
From: Doris <Doris>

Hello,

     We encountered a following exception during the execution of our Geant4 simulation. We have encountered this only once, so it's not a big deal. Still I wonder what is the meaning of the GeomNav0003 exception.

     Regards,
     Doris

ERROR - G4MultiLevelLocator::EstimateIntersectionPoint()
        Start and end-point of requested Step:
       Current Position  and  Direction 
Step#       s        X(mm)      Y(mm)      Z(mm)    N_x     N_y     N_z   Delta|N|   StepLen  StartSafety   PhsStep 
Start         0  408.85448  1165.2434   4086.791  -0.101  0.1054 -0.9893       0         0         9.26 Init/NotKnown 
   0    1000000 -100586.25  106540.85 -985203.85  -0.101  0.1054 -0.9893       0     1e+06         9.26 Init/NotKnown 
        Start and end-point of current Sub-Step:
10001  1472.9446   399.9774  1174.4992  2653.2428 0.03641  0.3027 -0.9524       0         0         9.26 Init/NotKnown 
10002    1000000 -100586.25  106540.85 -985203.85  -0.101  0.1054 -0.9893 -0.00139  9.99e+05         9.26 Init/NotKnown 
-------- EEEE ------- G4Exception-START -------- EEEE -------
*** G4Exception : GeomNav0003
      issued by : G4MultiLevelLocator::EstimateIntersectionPoint()
Too many substeps!
         Convergence is requiring too many substeps: 10002
          Abandoning effort to intersect. 
          Found intersection = 0
          Intersection exists = 1
        Undertaken only length: 1472.94 out of 1e+06 required.
        Remaining length = 998527
*** Fatal Exception *** core dump ***
-------- EEEE -------- G4Exception-END --------- EEEE -------

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1 None: Re: GeomNav0003 Exception: What does this mean?   (Tatiana Nikitina - 17 Apr, 2015)
(_ None: Re: GeomNav0003 Exception: What does this mean?   (John Apostolakis - 18 Apr, 2015)
(_ None: Re: GeomNav0003 Exception: What does this mean?   (Doris - 28 Apr, 2015)
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