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Forum: Processes Involving Optical Photons
Re: None Scintillation photons leaking through refelctive surface (Geertje)
Re: Feedback Re: Scintillation photons leaking through refelctive surface (Gumplinger Peter)
Date: 30 Apr, 2014
From: Geertje <Geertje>

On Wed, 30 Apr 2014 20:42:20 GMT, Gumplinger Peter wrote:

Dear Peter, thanks for the quik reply!!!

> and also:
> 
> opSFoilScintillator->SetMaterialPropertiesTable(mptFoil);
> 
> Don't attach mptFoil to the bulk material matFoil. This may not be your
> problem but the code does not foresee "REFLECTIVITY" to be associated
> with a bulk medium. You may also want to change:

Thanks for the tip, I didn' know that.

> G4OpticalSurface* opSFoilScintillator = new
> G4OpticalSurface("Dielectric-Metal", glisur, polished,dielectric_metal)
Okay, so I changed that for now

> OK, so you also have the G4Cerenkov process. Does the worldVolume have a
> material with an index of refraction. If so, the outside electron will
> generate Cerenkov photons...

No RINDEX is set for the world material nor the foil, so there shouldn't be any - but I checked for Cerenkov photons in SteppingVerbose berfore, as I tought the same, but didn't find any. I also ran boundary->DumpInfo() and boundary->SetVerboseLevel(4) before but the optical photon just seems to miraculously appear in the foil_physic.

> /tracking/verbose 1 /optics_engine/selectOpProcess OpBoundary
> /optics_engine/setOpProcessVerbose 1

I attached the output of this setting, maybe there is sth I'm overseeing.

> For good measure also set:
> 
> /optics_engine/selectOpProcess Cerenkov /optics_engine/setOpProcessUse
> false

Somehow, this doesn't work, I'm not sure why. It says: illegal application state -- command refused. I tried: False and 0, but it didn't work either

Thanks a lot,

Geertje

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2014/04/30/14.15-55941-opticsDebug.txt

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1 Feedback: Re: Scintillation photons leaking through refelctive surface   (Gumplinger Peter - 30 Apr, 2014)
(_ Ok: Re: Scintillation photons leaking through refelctive surface   (Geertje - 01 May, 2014)
(_ Feedback: Re: Scintillation photons leaking through refelctive surface   (Gumplinger Peter - 01 May, 2014)
(_ Question: Re: Scintillation photons leaking through refelctive surface   (Geertje - 01 May, 2014)
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