Hello Vasilis.
Thank you for the answers but I continue having doubts in the first one:
I use electrons and protons as a source, I have activated the
photoreactions and it is created neutrons, but anyway if you see the energy
binning, being score is "LinE LinAngle", is not linear, for example,
Emin=30 Emax=300 in 100 bin, you can see that the difference is sometimes
0.5, others 0.2, the last are 1 or others the diferecence is 0. So you can
not obtain the dose as sum of all contributions and then multiplique By the
width of the bin.
Thank you again.
Regards.
2017-06-28 9:11 GMT+02:00 Vasilis Vlachoudis <Vasilis.Vlachoudis_at_cern.ch>:
> Dear Javier,
>
> 1st. Scoring quantities that uses all particles in USRBDX, USRTRACK...
> for low energy neutrons (20MeV) will use always the neutron group
> structure,
> while for all other particles it will use the binning that you
> requested.
> Therefore you see in your case 260 n groups +400 bins
>
> 2nd. FLUKA doesn't have the impact ionization cross section for protons
> so what you get at high energies of protons is indirectly through
> other
> processes.
>
> Vasilis
> ------------------------------
> *From:* owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it]
> on behalf of Javier Lozano Díaz [jlozano_at_clpu.es]
> *Sent:* Tuesday, June 27, 2017 08:31
> *To:* fluka-discuss_at_fluka.org
> *Subject:* [fluka-discuss]: Problems with USRBDX
>
> Hello Fluka experts.
>
> I was simulated a shielding with an electron beam and I use some USRBDX
> scoring cards. The problem is when I check the result of tab.list or
> sum.list of this detectors and I find more binns in Energy than I have
> written in the card. For example if I put 1200 fluka count 1650, I have
> reduced to 400 but then appears 660, if you check the datas one by one you
> will find binn with the same energy interval (for example 2.3E-2 to
> 2.3E-2). I don't know why.
>
> I want to calculate de dose before and after the shielding and I'm trying
> to sum all the points in each interval of energy but I find that after the
> first layer I have the same dose that after the shielding element. This is
> a good way for obtain the dose?
>
> I add some folders
>
>
> *2 nd problem: k alpha line of copper *
> In the same configuration (changing the first layer for copper) I send a
> proton beam on a copper target in order to see the k alpha line (8.02 KeV).
> I am able to see the k alpha line with a proton energy more than 30 MeV.
> Under this energy it is impossible to see the k alpha line.
> The card I am using to see the k alpha line are the following: EMF,
> EMFFLUO, EMFCUT prod, EMFCUT transport.
>
> I would like to know why I can not see them with lower energy and which
> card should I add to see k alpha with a proton beam less than 30 MeV and
> if possible for 5 MeV proton beam, on the other hand, if I use an electron
> beam with a hundred of KeV, in this case I can see the K alpha without
> problems.
>
> Kind Regards
>
>
>
> --
> D. Javier Lozano Díaz
> Técnico de apoyo en Radioprotección
> Centro de láseres Pulsados Ultracortos (CLPU)
> Calle Adaja nº8 C.P. 37185 Villamayor, Salamanca.
> Edificio M5, Parque Científico USAL.
> *Tel:* 923 338 121 *Ext:* 26
> *E-mail:* jlozano_at_clpu.es
> www.clpu.es
>
--
D. Javier Lozano Díaz
Técnico de apoyo en Radioprotección
Centro de láseres Pulsados Ultracortos (CLPU)
Calle Adaja nº8 C.P. 37185 Villamayor, Salamanca.
Edificio M5, Parque Científico USAL.
*Tel:* 923 338 121 *Ext:* 26
*E-mail:* jlozano_at_clpu.es
www.clpu.es
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Received on Thu Jun 29 2017 - 17:41:22 CEST