|Message: G4 fail to find normal vector (only when a field is added).||Not Logged In (login)|
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Hello every one,
When I add a field throught ConstructSDandField() I get the following warning message each time a particle (neutron) is reflected on a volume (if I remove the field, the message disappear).
-------- WWWW ------- G4Exception-START -------- WWWW ------- *** G4Exception : GeomNav0003 issued by : G4Navigator::GetGlobalExitNormal() WARNING> Expected normal-global-frame to be valid, i.e. a unit vector! - but |normal| = 0 - and |normal|^2 = 0 which differs from 1.0 by -1 n = (0,0,0) ============================================================ State of Navigator: The current state of G4Navigator is: ValidExitNormal= 0 ExitNormal = (0,0,0) Exiting = 0 Entering = 0 BlockedPhysicalVolume= None BlockedReplicaNo = -1 LastStepWasZero = 0
Current Localpoint = (1240.1431,-648.65287,-2653.5438) PreviousSftOrigin = (1240.143,-648.65276,-2653.5437) PreviousSafety = 0.00013825384 Current History: Level=: Phys Name=[World] Type=[N] Level=: Phys Name=[sphere_physical] Type=[N]
============================================================ Value obtained from stored global-normal is not a unit vector.
*** This is just a warning message. *** -------- WWWW -------- G4Exception-END --------- WWWW -------
(Here the geometry is just a sphere)
I have no idea where it comes from and if there is serious consequences on the reflection ?
Thanks in advance. Best Regards.
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