Re: [fluka-discuss]: Re: Dose profile due to GCR

From: Anna Ferrari <a.ferrari_at_hzdr.de>
Date: Fri, 22 Apr 2016 10:03:46 +0200

Dear Roman,
   
it seems to me that you did not normalize correctly for the volume... you
used a cartesian USRBIN to do the 1D scan of a sphere, then without further
normalization you should expect effect on the borders.
Kind regards,
Anna


Am Fri, 22 Apr 2016 01:48:29 +0000 schrieb Roman Savinov
<rsavinov_at_calpoly.edu>:
> Dear Vasilis,
>
>
> I increased the number of events from 1e4 to 2e5 and reran for 10 cycles
>instead of 3 as I did last time. I also had to reduce the radius of the
>sphere from 60 to 30 cm, otherwise it takes ridiculous time to run.
>
> The result is indeed more conclusive:
>
>
> [cid:aacc785e-f2a7-4b5a-8998-b04c3a6c7ca6]
>
> but I do not understand it. Why the profile is concave down?
>
> I want to see an attenuation profile where the dose DECREASE with depth.
>
> Is the sphere is too small or should I increase accuracy some more or,
>perhaps, this result is actually what I should expect?
>
>
> thank you,
>
>
> Roman

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Anna Ferrari
HZDR - Institute of Radiation Physics
Germany


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Received on Fri Apr 22 2016 - 11:36:58 CEST

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