Re: [fluka-discuss]: Scoring Absorbed Dose

From: Alberto Fasso <fasso_at_mail.cern.ch>
Date: Thu, 27 Feb 2014 10:11:13 +0100

Dear Mina,

the fact that you "still see a value of 1.000000000D+00 for the region's
volume and the same deposited energy value as in case 2a" is a clear proof
that you have made a mistake in inputting the volumes. Also your other
findings are at variance with all our experience.
Please send you three input files 1, 2a and 2b.

Alberto


On Thu, 27 Feb 2014, Mina Nozar wrote:

> Hello everyone,
>
> We are trying to score Absorbed Dose in a given region. We have tried two
> scoring methods:
> 1) via a USRBIN card with REGION binning and DOSE as the quantity scored
> and
> 2) via a SCORE card and Energy as the quantity scored, with no volume input
> (case 2a) and with volume input (case 2b).
>
> According to the manual, we should get
> - GeV/g per primary for option 1
> - GeV per primary for option 2a
> - GeV/cm3 per primary for option 2b
>
>
> As for the volume setting for the SCORE card, we set IVFLG to 3 in the GEOBIN
> title card and inputted the region volume in the geometry region card for the
> region.
>
>
> We are seeing some discrepancies. The value we get from SCORE (with no
> volume setting, case 2a) agrees with the value from the USRBIN, if we divide
> the SCORE value by the density. This implies that the SCORE value is GeV/cm3
> per primary which doesn't agree with what is in the manual.
>
> Furthermore, when we do set the volume, following the instructions above, we
> still see a value of 1.000000000D+00 for the region's volume and the same
> deposited energy value as in case 2a.
>
> This is a source of confusion for us and we are eager to find whether we are
> missing something. Can someone shed some light on this please?
> Is there another way to score absorbed dose in a region?
>
> Thank you very much,
> Mina & Martin
>
>
Received on Thu Feb 27 2014 - 11:20:13 CET