It is a cosine (wrt the normal) weighted distribution generated towards
the inside on a random point on the sphere surface.
You can easily demonstrate yourself with simple mathematics that the
resulting fluence in whichever point inside the sphere is uniform and
isotropic (of course if the sphere is void), and equal to 1/(pi R^2)
where R is the sphere radius. If you prefer an "experimental" verification
you can put estimators (eg tracklength or boundary crossing) inside the
sphere and verify it (again assuming you put no material inside the
sphere).
Ciao
Alfredo
+----------------------------------------------------------------------+
| Alfredo Ferrari || Tel.: +41.22.76.76119 |
| CERN-EN/STI || Fax.: +41.22.76.69474 |
| 1211 Geneva 23 || e-mail: Alfredo.Ferrari_at_cern.ch |
| Switzerland || |
+----------------------------------------------------------------------+
On Thu, 19 Jul 2018, Laghi Davide (F4E-Ext) wrote:
>
> Hello,
>
> IĒve seen that with FLOOD itĒs possible to create an isotropic and uniform
> fluence inside a sphere. Is that a cosine distribution? Is there any
> analytical demonstration available on how to create such a fluence?
>
>
>
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Received on Thu Jul 19 2018 - 22:30:22 CEST