...just to be more precise with the number: I wrote that it should be
what(6)=1.E-4 in USRBDX card considering as boundary one side of a cube of
0.01 cm size (since you did not send the input file - thing that is always
recommended - it is not clear to me if this is exactly your geometry). If
not, you have in any case to provide a detector surface in USRBDX and a
detector volume in USRTRACK, as I wrote in the previous email.
Note that the quantities can vary a bit accordingly with the estimator: in
the USRTRACK case you obtain the track-length density distribution
normalized to the detector volume (= the fluence averaged over the whole
volume), while in the USRBDX case the average fluence through (a parte of)
its surface.
Regards,
Anna
Am Fri, 12 Aug 2016 09:24:49 +0000 schrieb Karolina Kokurewicz
<karolina.kokurewicz_at_strath.ac.uk>:
> Dear FLUKA experts,
>
> I've noticed that graphs have not been attached. Please see them in the
>separated files.
>
> Thank you,
> Karolina
> ___________________________
>From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on
>behalf of Karolina Kokurewicz [karolina.kokurewicz_at_strath.ac.uk]
> Sent: 11 August 2016 19:03
> To: fluka-discuss_at_fluka.org
> Subject: [fluka-discuss]: USRTRACK vs. USRBDX
>
> Dear FLUKA experts,
>
> I'm scoring energy spectra of photons, emitted by 200 MeV electrons focused
>in water. I'm particularly interested in photons at 20 cm depth. For that I
>defined 0.01 cm thin volume within water cube by using XYP plane. To score
>energy of photons I chose tabs USRTRACK with AUXSCORE for that volume. The
>results I've got are fine however I wanted see if USRBDX will give me the
>same spectra. I specified boundaries to cover the same region as in USRTRACK
>(also I added AUXSCORE command to score exatly energy of photons). The
>results I normalized (according to manual) as follows:
>
> USRTRACK = Y(axis) * energy bin (I get rid of 'per GeV')* number of
>particles (I get rid of 'per primary'), so I get fluence in cm^{-2}
>
> USRBDX = Y(axis)* energy bin*2pi (because I requested one way scoring)
>*number of particles.
>
> The results I've got are:
>
> USRBDX 1. ENERGY -34. TARGET TARGET6
> 100.usrbdx_his
> USRBDX 0.2 0.1 200. 0.0 1. &
>
>
> [X]
>
>
> USRTRACK 1. ENERGY -30. TARGET6 100.
> 400.histogram6
> USRTRACK 0.2 0.1 &
>
>
> [X]
>
>
> I would like to ask how can I explain difference between these two spectra?
>I have noticed that whenever I change the thickness of my volume fluence
>increases in USRTRACK. So how thick should be my scoring volume to get the
>same results as for USRBDX?
>
> Thank you,
> Karolina
>
>
> __________________________________________________________________________
> You can manage unsubscription from this mailing list at
>https://www.fluka.org/fluka.php?id¬c_info
>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dr. Anna Ferrari
Institute of Radiation Physics
Helmholtz-Zentrum Dresden-Rossendorf e.V.
Tel. +49 351 260 2872
a.ferrari_at_hzdr.de
http://www.hzdr.de
Vorstand: Prof. Dr. Dr. h. c. Roland Sauerbrey, Prof. Dr. Dr. h. c. Peter
Joehnk
Vereinsregister: VR 1693 beim Amtsgericht Dresden
__________________________________________________________________________
You can manage unsubscription from this mailing list at
https://www.fluka.org/fluka.php?id=acc_info
Received on Fri Aug 12 2016 - 15:51:48 CEST