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Forum: Processes Involving Optical Photons
Re: Question G4Exception : mat205 (George Dedes)
Re: Feedback Re: G4Exception : mat205 (Gumplinger Peter)
Date: 17 Jun, 2014
From: George Dedes <George Dedes>

Hi Peter and Michael,

going through my student's code (I attach part of the DetectorConstruction plus the output of the DumpTable()), there are a few questions.

First of all, to answer Peter's comment, there are 91 entries in the arrays and no 0 energy entry. Nevertheless we DO HAVE some 0 entries in the SCINT and ABSL array. Is this the problem? Is there also a hardcoded E limit, beyond which the code doesn't work? We use a 2.06661*eV lowest energy.

It seems actually that the problem comes from the absorption length array. A more general question is the following. We get the array elements from some experimental data (I can send you the paer if you re interested). They have data for both what they call "absorption length" and "attenuation length". So my question is which of the two physical meaning is related to the G4 absorption length?

George

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2014/06/17/07.03-66660-Sample.cpp
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2014/06/17/07.03-22352-log.txtOn Mon, 16 Jun 2014 21:16:46 GMT, Gumplinger Peter wrote:

> What is your code with which you specify RINDEX (e.g.
> AddProperty("RINDEX",...)? Does it have entries with photon energy ==
> 0.? How many entries does it have - must be at least 2!
> 

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1 Feedback: Re: G4Exception : mat205   (Gumplinger Peter - 23 Jun, 2014)
1 Sad: Re: G4Exception : mat205   (George Dedes - 27 Jun, 2014)
(_ None: Re: G4Exception : mat205   (Michael H. Kelsey - 27 Jun, 2014)
2 More: Re: G4Exception : mat205   (Gumplinger Peter - 24 Jun, 2014)
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