Message: Re: Low E production threshold stuck at 990 eV Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

Question Re: Low E production threshold stuck at 990 eV 

Forum: Physics List
Re: Question Low E production threshold stuck at 990 eV
Re: None Re: Low E production threshold stuck at 990 eV (Vladimir IVANTCHENKO )
Date: 29 Sep, 2004
From: Daniel Barna <Daniel Barna>

Hello

I am a bit confused now. In the docs I have read that a new feature of G4 is the unique treatment of cuts as _range cuts_, which are converted to energy in each material.

As suggested in this article, however, it is not enough to define range cuts for different particles, one also has to set an energy cut, additinally. As Leif pointed out, by changing the range cut for a particle one can not go below 0.99keV energy threshold, and this can only be done by changing the _energy_ cut in ProductionCutsTable (by VI).

My question is: which value is than used as the real production threshold? The one calculated from the range-cut, or the energy-cut defined in the ProductionCutsTable? Could someone point me to right point in the G4 documentation about this topic?

Thanks, Daniel

> > I've Moved from Geant4.5.2.p02 to Geant4.6.1 and have a problem with cuts.
> > I used,
> > 
> >   G4double cut = 100.0*eV;
> >   G4Gamma   ::SetEnergyRange(cut,100*GeV);
> >   G4Electron::SetEnergyRange(cut,100*GeV);
> >   G4Positron::SetEnergyRange(cut,100*GeV);
> > 
>
> In 6.0 and later one should use:
>  
> G4ProductionCutsTable::GetProductionCutsTable()->SetEnergyRange(cut,100*GeV);
>
> VI

Inline Depth:
 1 1
 All All
Outline Depth:
 1 1
 2 2
 All All
Add message: (add)

1 None: Re: Low E production threshold stuck at 990 eV   (Vladimir IVANTCHENKO - 30 Sep, 2004)
 Add Message Add Message
to: "Re: Low E production threshold stuck at 990 eV"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews


[ Geant 4 Home | Geant 4 HyperNews | Search | Request New Forum | Feedback ]