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Forum: Event and Track Management
Re: Question Weight of a track
Date: 01 Jun, 2005
From: Vladimir IVANTCHENKO <vnivanch@mail.cern.ch>

On Tue, 31 May 2005 campagne@lal.in2p3.fr wrote:

> *** Discussion title: Event and Track Management
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/eventtrackmanage/332"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> Dear developpers,
> 
> I am looking to hadronic processes (proton -> Beryllium target), and I
> was looking to secondary production. As there is large discrepency of
> G4/QGSP with respect to FLUKA and analytic description, I was looking to
> the G4Track header file and found this piece of code:
> 
>   // track weight
>   // These are methods for manipulating a weight for this track.
>    G4double GetWeight() const;
>    void     SetWeight(G4double aValue);
> 
> Does it mean that each (or some) track is affected by a multiplicity
>  weight which may be the source of the discrepency found (note that MARS
> FLUKA are using weight method to produce the particles...)?
> 
> Regards Jean-Eric Campagne
> 

Hello,

By default weight=1, it is differ from 1 only if biasing is used.

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