Message: Re: What is that? "Warning ... PCone not able to return normal .." Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

News Re: What is that? "Warning ... PCone not able to return normal .." 

Keywords: PCcone warnings
Forum: Particles
Re: None What is that? "Warning ... PCone not able to return normal .." (Dvorak)
Date: 03 Apr, 2003
From: Igor Machulin <machulin@in2p3.fr>

       Dear collegues.
       I had checked manually the reflection of photon
from PCone surfaces (by drawing the photon trajectory).
It looks to be correct.

The warning origins from G4BREPSolidPCone.cc part of the geant4 code:
The function "G4ThreeVector G4BREPSolidPCone::SurfaceNormal(const G4ThreeVector& Pt) const" in the process of reflection of 1 photon
is called twice. At first time it correctly reflects the photon (and
after that it propagates in correct direction).
         At second time the function can't give the normal to the 
surface and gives the warning.(I don't know for what reason it is called twice).
          This is not a big error, but this false warning gives too
much information on terminal (each time, when the photon reflects).

Maybe this bug corresponds to GEOMETRY, but may be also to PROCESS part. I had not find what module calls the Surface normal function for second time.

Igor Machulin.

Inline Depth:
 1 1
 All All
Outline Depth:
 1 1
 2 2
 All All
Add message: (add)

1 Feedback: Re: What is that? "Warning ... PCone not able to return normal .."   (Peter Gumplinger - 03 Apr, 2003)
 Add Message Add Message
to: "Re: What is that? "Warning ... PCone not able to return normal ..""

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews


[ Geant 4 Home | Geant 4 HyperNews | Search | Request New Forum | Feedback ]