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Forum: Fields: Magnetic and Otherwise
Re: None Help setting up an Electric Field (Adam)
Re: Feedback Re: Help setting up an Electric Field (Gumplinger Peter)
Re: None Re: Help setting up an Electric Field (Adam)
Re: None Re: Help setting up an Electric Field (John Apostolakis)
Re: None Re: Help setting up an Electric Field (Adam)
Date: 11 Jul, 2007
From: Gumplinger Peter <Gumplinger Peter>

Hi Adam,

Now, this is interesting .... my guess is ......

This may be a feature (you could call it a 'bug') of G4. You see that in G4 every track, once on the G4 tracking stack, will be tracked down to the end of its range; i.e. as far as it can go. Now, if the track (charge) remains inside an electric field, it will never come to rest as it is always accelerated.

What you need is some "user limits"; please see:

http://geant4.in2p3.fr/2007/prog/MakotoAsai/Kernel2.pdf

and examples where you find this used:

fMinEkine/G4UserSpecialCuts

Peter

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