Dear Roman
For flat geometry FLUKA starts the GCR isotropically (in 2pi) at a fixed
point. This geometry is used, e.g., for shower calculations in the
atmosphere that are insensitive to its curvature, e.g. dose calculation at
a certain depth.
For a spherical geometry FLUKA starts the GCR isotropically on a sphere of
a certain radius (isotropical for both in coordinates of the cascade
starting point and direction of primary particle).
There is a lecture on Cosmic Ray calculations with FLUKA
https://www.fluka.org/free_download/course/triumf2012/Lectures/AdvancedCosmicRays2012.pdf
Perhaps it gives you further hints.
Cheers
Stefan
On Tue, 24 Nov 2015, Roman Savinov wrote:
> Dear Fluka experts,
> The manual mention a flat geometry for GCR-ALLF and GCR-IONF, specifically according to
> the chapter 16.3 if WHAT(2)<0, than the value defines "starting height (the emission
> height in case of flat geometry)"
> Do I understand it right that this means that the source is a "wall" of GCR consist of
> parallel rays?
> If not, what the difference between spherical and flat geometry?
> My goal is to experiment with shielding so it would be convenient to have a cylinder of
> different height and material subject to the homogeneous flux of composition and intensity
> of GCR.
> Or maybe there is a different way to do this? What is a most common set up for shielding
> study?
>
> thanks,
>
> Roman
>
>
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Received on Mon Nov 30 2015 - 13:37:46 CET