Hi vasilis,
thanks a lot for the explanation. Related with Jilberto question I would
like ask you if the Cosmic ray example is using a specific Cosmic Ray
model? or is it just making a simulation of a beam of protons? Thanks a lot
in advance.
Best regards,
Ivan
El vie., 26 oct. 2018 a las 10:40, jilberto Zamora Saa (<jzamorasaa_at_jinr.ru>)
escribió:
> Dear Vasilis:
>
> I am facing a similar problem, by the way, do you know where I can find
> information about the particular model to simulate the cosmic rays that we
> are using. I was looking through the manual references, however, I could
> not find information about primaries rate or something like that, which
> allow me to estimate the neutrino/muon flux per time-units (s^-1).
>
> Thank in advance,
>
> Jilberto
>
> On Oct 26, 2018, at 5:00 AM, Vasilis Vlachoudis <
> Vasilis.Vlachoudis_at_cern.ch> wrote:
>
> Hi Ivan,
>
> just to clarify the fluka normalization "/primary" vs "/s". For normal
> runs (excluding the decay runs)
> fluka particles time (age) information is the time since the moment of
> creation of the primary,
> where in the default source routine is zero 0. Assuming all simulated
> primary particles are generated
> at zero-time and have no time-structure at all, that why you get per
> primary "/pr", typically fluence which is
> the time-integral of the flux.
>
> If you have a continuous process with a certain time structure, fluka will
> not take it into account,
> you have to manually do it in your normalization at the end. So if your
> source is given as primaries/sec
> you can multiply the fluka results by this value and convert them
> from "/primary" to "/sec"
>
> Vasilis
>
>
> ------------------------------
> *From:* owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it]
> on behalf of Iván Martínez Soler [ivan.martinezsoler_at_northwestern.edu]
> *Sent:* Thursday, October 25, 2018 17:20
> *To:* fluka-discuss_at_fluka.org
> *Cc:* Yuber Ferney Perez Gonzalez
> *Subject:* [fluka-discuss]: Atmospheric neutrino flux
>
> Dear Fluka experts:
>
> we are trying to simulate the atmospheric neutrino flux at the Earth´s
> surface. We are following the Cosmic Ray example in the notes. To score the
> neutrinos arriving to the Earth, if we use the card USRBDX we get a flux
> units of #particles/GeV/cmq/sr/pr, however, we need a flux unit of
> #particles/GeV/cmq/sr/s. We have also tried to use the card USRYIELD, but
> we are able only to get the double differential yield per energy and time.
> Can you help us to find the way to get the correct units for the flux?
> Thank you very much in advance.
>
> Best regards,
> Ivan and Yuber
>
>
>
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Received on Fri Oct 26 2018 - 19:24:20 CEST