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Forum: Processes Involving Optical Photons
Re: Question StepTooSmall (Davit Mayilyan)
Re: Feedback Re: StepTooSmall (Gumplinger Peter)
Date: 23 Aug, 2011
From: Davit Mayilyan <Davit Mayilyan>

On Mon, 22 Aug 2011 17:33:29 GMT, Gumplinger Peter wrote:
> *** StepTooSmall *** is actually - in most cases - not an error message.
> The step:
> 
> aTrack.GetStepLength()<=kCarTolerance/2
> 
> is the reallocation step when a optical photon reflects off a surface.
> There is always one such step upon reflection.
> 
> Now, your post seems to indicate that your output is nothing but such
> messages and always for the same pair of volumes:
> 
> thePrePV: Clad2 thePostPV: WLSFiber
> 
> Do you get other print messages as well? In normal tracking this line
> should be followed by other step and G4OpBoundaryProcess messages. Do
> you have also:
> 
> /tracking/verbose 1
> 
> set?
> 

My /tracking/verbose is set to 0

I think I've found the solution. The problem was in Claddings' inner radius. I set it 0, as it is in the wls example, but I can't still see the transportation of photons along the fiber.I don't really know is it working, or not, because in some cases there is 1 photon that reflects from one surface to the other and goes along the fiber.

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1 Feedback: Re: StepTooSmall   (Gumplinger Peter - 23 Aug, 2011)
(_ Ok: Re: StepTooSmall   (Davit Mayilyan - 26 Aug, 2011)
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