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Forum: Physics List
Re: None turned off or not (Kin Yip)
Date: 15 Aug, 2007
From: Vladimir IVANTCHENKO <vnivanch@mail.cern.ch>

On Tue, 14 Aug 2007, Kin Yip wrote:

> *** Discussion title: Physics List
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/phys-list/396"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> Hi,
> 
> /process/list shows ONLY the activated physics lists, right ?
> 
> In a GEANT4 macro file of mine, I've done :
> 
> /process/inactivate muIoni /process/inactivate muBrems
> /process/inactivate muPairProd /process/inactivate muNuclear
> /process/list
> 
> While running GEANT4, I see in my log file :
> 
> /process/inactivate muIoni /run/physicsModified /process/inactivate
> muBrems /run/physicsModified /process/inactivate muPairProd
> /run/physicsModified /process/inactivate muNuclear /run/physicsModified
> /process/list
> 
>       Transportation,G4FastSimulationManagerProcess,              Decay,   RadioactiveDecay
>                  msc,          hLowEIoni,              eIoni,              eBrem
>              annihil,      LowEnergyIoni,          LowEnBrem,      LowEnRayleigh
>       LowEnPhotoElec,       LowEnCompton,    LowEnConversion,             muIoni
>              muBrems,         muPairProd,muMinusCaptureAtRest,    PhotonInelastic
>       ElectroNuclear,    PositronNuclear,          muNuclear,           LElastic
> ...............
> ..............
> 
> If I assume that /process/list shows ONLY the activated lists, does this
> mean that my attempt to turn off muBrems, muPairProd and muNuclear has
> failed ?
> 
> Are there any other switches that I would need to turn off physics
> processes ? If so, what are they ? Could you please help ?
> 
> Kin
> 

When process is deactivated it is not removed from the list of processes. 
It can be activated back.

Please, note, that deactivation of any G4 process may provide wrong 
results of simulation, do not use deactivation for any serious work, 
except simple test.

VI

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