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Forum: Fast Simulation, Transportation & Others
Re: Note Problem with very small stepsize caused by transportation process? (Henning Gast)
Date: 10 Jan, 2007
From: Vladimir IVANTCHENKO <vnivanch@mail.cern.ch>

On Wed, 10 Jan 2007, Henning Gast wrote:

> *** Discussion title: Fast Simulation, Transportation & Others
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/fastsim/22"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> Hi,
> 
> I am simulating a cosmic-ray detector in G4.8.2 and have encountered the
> following problem:
> 
> In some (1/1000) events, there is a very tiny step size in one of my
> "TrdLayer" volumes, leading to the event being practically stuck, for
> example: (description continues below)

Hello,

Can I ask you to try following:

/process/eLoss/MscStepLimit 0.2 false

This command switches off step limitation from multiple scattering. Doing 
this test we can distinguish msc and transportation in field problems.

VI

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1 None: Re: Problem with very small stepsize caused by transportation process?   (Henning Gast - 10 Jan, 2007)
(_ None: Re: Problem with very small stepsize caused by transportation process?   (Henning Gast - 11 Jan, 2007)
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