From: Alberto Fasso' (fasso@SLAC.Stanford.EDU)
Date: Mon Feb 13 2006 - 19:19:48 CET
Brandon,
on most computers, your input is unreadable. Please send it as a text
attachment.
Concerning SCORE and USRBIN, as I have tried to explain to you several
times off-list, their results DO ALWAYS AGREE, provided that they refer to the
same portion of space and that you provide the volume normalization to the
SCORE result. If there is a strong dose gradient, and the binning mesh is
smaller than the corresponding region, of course they cannot agree.
The same consideration holds for comparing with "what is published in
literature". The scoring region of space must be the same, otherwise
no comparison can be done.
Alberto
On Mon, 13 Feb 2006, Reddell, Brandon D wrote:
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> Dear FLUKA users,
>
> I have a very fundamental and rather simple question that nobody seems
> to be able to answer. How do you correctly determine dose at the center
> of a solid aluminum sphere. I want to compare FLUKA 3D results with
> results from others codes, such as Shieldose2 and GEANT4.
>
> I've included a test input file as an example. The results from SCORE
> and USRBIN 1) don't agree with each other, then 2) they aren't even
> close to that from the other codes. Ultimately, I would like to get the
> dose at the center of a sphere from an isotropic source/spectrum (hence
> my source command at the bottom). For now, I am directing all energy to
> the center -- the answer should be relatively close to that from an
> isotropic source.
>
> Can any body help me determine dose in Rad or Gy at the center of a
> solid sphere --- and provide an answer that consistent with what is
> published in literature?
>
> Sincerely,
>
> Brandon
>
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-- Alberto Fassò SLAC-RP, MS 48, 2575 Sand Hill Road, Menlo Park CA 94025 Phone: (1 650) 926 4762 Fax: (1 650) 926 3569 fasso@slac.stanford.edu
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