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Forum: Physics List
Re: Question Low E production threshold stuck at 990 eV
Date: 17 May, 2004
From: Vladimir IVANTCHENKO <vnivanch@mail.cern.ch>

On Mon, 17 May 2004 leif.adelow@xcounter.se wrote:

> *** Discussion title: Physics List
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/phys-list/65"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> Dear all,
> 
> 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

> with 
> 
>   pmanager->AddDiscreteProcess(new G4LowEnergyRayleigh);
>   pmanager->AddDiscreteProcess(new G4LowEnergyCompton);
>   pmanager->AddDiscreteProcess(new G4LowEnergyGammaConversion);
>   pmanager->AddDiscreteProcess(new G4LowEnergyPhotoElectric);
>   .
>   .
>   loweIon  = new G4LowEnergyIonisation;
>   loweBrem = new G4LowEnergyBremsstrahlung;
>   MuSc = new G4MultipleScattering;             
>   loweIon->ActivateAuger(true);
>   loweIon->ActivateFluorescence(true);
>   pmanager->AddProcess(loweIon,-1,2,2);
>   pmanager->AddProcess(loweBrem,-1,-1,3); 
>   pmanager->AddProcess(MuSc,-1,1,1);
> 
> to understand the resulting e- distribution in a gaseous detector,
> i.e. including re-absorption of flourescence etc.
> 
> Using Geant4.6.1, not having 
> static void G4Gamma::SetEnergyRange(cut,100*GeV), how do I apply
> SetCutValue(cut,"gamma") to get below the 990 eV production threshold?
> All my range cuts gets converted to energies at or above 990 eV!
> 
> I would really appreciate some help.
> 
> Best Regards
> Leif
> 
> 

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1 Ok: Re: Low E production threshold stuck at 990 eV   (Leif Adeloew - 17 May, 2004)
3 Question: Re: Low E production threshold stuck at 990 eV   (Daniel Barna - 29 Sep, 2004)
1 None: Re: Low E production threshold stuck at 990 eV   (Vladimir IVANTCHENKO - 30 Sep, 2004)
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