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Forum: Processes Involving Optical Photons
Re: None Wrong optical photon parameters interpolation (Porosev Viacheslav)
Date: 03 Apr, 2018
From: Davide Nicotra <Davide Nicotra>

Hi, same problem here. See attachment.

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/04/03/01.53-19917-spettroscintillazione.jpgOn Tue, 06 Sep 2016 11:49:01 GMT, 

Porosev Viacheslav wrote:

> Hello all! I try to simulate scintillation counter and I have used the
> data files to describe different scintillator properties. For example, I
> used a data file with a digitized emission spectrum to set
> "FASTCOMPONENT" property. Result of simulation is strange... Please, see
> attachment. The input data shown in red and Geant4 produced spectrum is
> in black. Instead of linear interpolation, Geant4 makes very strange
> interpolation between data points. I have found similar reports in the
> forum but I didn&#65533;t find any solution of the problem&#65533;. Could anybody
> recommend anything how to solve the issue????? P.S. One more question&#65533;.
> If I should enter all scintillator parameters at the same energy grid?
> For example with step 0.1eV: 1eV, 1.1eV,1.2eV&#65533;. 10eV... etc. Or it is
> possible to use different energy grids for different parameters? For
> example &#65533;FASTCOMPONENT&#65533; is defined at energy step 0.1eV, &#65533;RINDEX&#65533; with
> step 1eV and &#65533;ABSLENGTH&#65533; with step 2eV&#65533;.
> 
>    Attachment:
>       http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/09/06/04.48-49704-LYSO_spectrum.jpg
> 

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