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Forum: Fast Simulation, Transportation & Others
Re: Question get Mean free path (Artem Basalaev)
Re: None Re: get Mean free path (michel maire)
Date: 04 Mar, 2014
From: Artem Basalaev <Artem Basalaev>


Thank you for the answer, but the method of calculating the mean free path in this example is not valid for my setup.

There is a thick ('infinite') material, thus all incident particles interact with it sooner or later, and then their track length is being averaged.

This is a simulation of a real physical experiment, where we assume that we don't know mean free path until we calculate average track length on a large sample.

The material in my setup is neither infinite, nor even thicker than the mean free path, so interactions of incident particle with it are quite rare. And what I want to do is to get calculated mean free path from intrinsic Geant functions.

Obviously, Geant calculates somehow the probability of interaction with given material: P = 1 - exp (- layerThickness/meanFreePath) So I want to get this meanFreePath value.

On Tue, 04 Mar 2014 10:22:09 GMT, michel maire wrote:

> On Mon, 03 Mar 2014 20:13:26 GMT, Artem Basalaev wrote:
> > Hello!
> > 
> > My setup is a modification of example B2, where I replaced geometry by
> > thin Silicon layer (250 &#65533;m) and configured the Particle Gun to shoot
> > single Pi+ per event perpendicular to the layer.
> > 
> > Now I need to get the value of Mean free path calculated by Geant for my
> > material. I'm only interested in hadronic inelastic interactions.
> > 
>   Please, have a look to extended/hadronic/Hadr03

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1 None: Re: get Mean free path   (michel maire - 05 Mar, 2014)
(_ Ok: Re: get Mean free path   (Artem Basalaev - 06 Mar, 2014)
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