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Idea Re: non uniform timing distribution 

Forum: Processes Involving Optical Photons
Re: Question non uniform timing distribution
Date: 16 Aug, 2013
From: Gumplinger Peter <Gumplinger Peter>

Hi Baptiste,

Please, be advised that the group velocity in the medium is calculated in G4 internally from:

v_group = c/(rindex+d(rindex)/d(log(E_phot)))

G4 presently does not first interpolate and smooth your input (rindex vs E_phot). It is thus very important for good and physical timing results without these fluctuations that you provide (from a smooth functional dependence) a large number of points for your rindex vs E_phot array.

Hope this helps and sorry for my delayed response (due to absence), Peter

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