Re: [fluka-discuss]: proton-proton collisions

From: paola sala <paola.sala_at_cern.ch>
Date: Wed, 20 Apr 2016 08:06:58 +0200

Hi
sorry probably I misunderstood
when you mentioned proton-proton at LHC, I supposed that you were
simulating the primary, colliding, beam interactions ..
Also because you were mentioning silicon detectors, so I could no see
the use of proton-proton interactions if not in the colliding beams.
May i ask you to explain a bit more in details what you need,, to help
in finding an answer?
Thank you
Paola

On 04/19/2016 03:56 PM, amucha_at_agh.edu.pl wrote:
> Hi,
> Thank you for your answer.
> I tried to obtain the spectrum of particles produced in 100 GeV
> proton- proton interaction by scoring the particles in a vacuum sphere
> (see the input and output files) as you suggested, but it doesn’t
> work. I think that because there are hardly any particle-vacuum
> interactions (except photons and pizeros). When I change the
> material assignment from vacuum to beryllium or lead the results seems
> reasonable, i.e. I can see the energy deposited in the sphere but this
> is not what I wanted for my study.
> So the only way to have particles from proton-proton interaction is
> to obtain them from usrein.f routine? Or am I doing something wrong?
> Regards,
> Agnieszka
>
>
> W dniu 2016-04-12 22:04, Paola Sala napisał(a):
>> Sorry!
>> I gave the wrong routine name! The correct one is
>> usrein.f
>> I apologize
>> Paola
>>> Dear Agnieszka
>>> I see two possibilities:
>>> 1)add a dummy sphere, in vaccum, around the interaction point, and
>>> use it
>>> to score the different particle spectra . For instance with
>>> usrbdx, one
>>> for each particle specie.
>>> 2) dump all the produced particles from a user routine. The best
>>> choice,
>>> in case you are using ppsource, is to use the evvini user routine,
>>> that is
>>> called after the source and gets all the secndaries in the fluka stack
>>> (common FLKSTK )
>>> Regards
>>> Paola
>>>> Hi Fluka Users,
>>>> I'm going to make a new simulation of fluence for one of the silicon
>>>> detector at LHC and compare the results from Fluka and Geant4. My
>>>> first
>>>> problem is how to obtain the four-momenta of particles produced in
>>>> proton-proton collisions in Fluka? At the beginning I want to make a
>>>> comparison at the generation level, so a need a spectrum of all
>>>> particles before they reach any material.
>>>> Cheers,
>>>> Agnieszka
>>>>
>>>> __________________________________________________________________________
>>>>
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>>>>
>>>
>>>
>>> Paola Sala
>>> INFN Milano
>>> tel. Milano +39-0250317374
>>> tel. CERN +41-227679148
>>>
>>> __________________________________________________________________________
>>>
>>> You can manage unsubscription from this mailing list at
>>> https://www.fluka.org/fluka.php?id=acc_info
>>>
>>
>>
>> Paola Sala
>> INFN Milano
>> tel. Milano +39-0250317374
>> tel. CERN +41-227679148
>>
>> __________________________________________________________________________
>>
>> You can manage unsubscription from this mailing list at
>> https://www.fluka.org/fluka.php?id=acc_info

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Received on Wed Apr 20 2016 - 10:28:26 CEST

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