Hi,
I’m sorry for not being precise. The main task of my work is to obtain
fluence in silicon strip detectors in LHCb for RunI and RunII and
compare results from Fluka with the “old” simulation done in Geant.
For the Geant simulation I use Pythia and software of the LHCb
Collaboration.
First I need to be sure that Fluka and Pythia generate similar flux of
particles. I want to obtain the energy of particles generated in
proton-proton collision. From the Fluka advanced course I assumed that
the information about four momentum of generated particles is
available. Fortran is hard for me, but hope will cope with if only
knew what to do. I would be perfect if I could finally have Root files,
this is also in mind.
If spectrum of particles produced in pp collisions (secondary particles)
in Fluka and Pythia is similar, I will compare the fluence in detector –
scoring from Fluka (the geometry part of input file is written) and
energy deposits from Geant 4 and our software.
Sorry for such a long story, but I’m a Fluka beginner, thanks for your
help!
Regards,
Agnieszka
W dniu 2016-04-20 08:06, paola sala napisał(a):
> 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
>>>>>
>>>>> __________________________________________________________________________
>>>>> 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
>>>>
>>>
>>>
>>> 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 - 12:04:58 CEST