Re: [fluka-discuss]: Creation of Phase Space

From: Federico Geser <fgeser_at_famaf.unc.edu.ar>
Date: Tue, 9 May 2017 11:05:07 -0300

Dear Stefan and Francesco,

Thank you for your response!

Yes, I understand that transport should not be interfered. I intend to
create a file containing the information of the primary and secondary
particles crossing a surface only to re-use it as an input source for other
simulation. That's why I suggested "killing" the particle when boundary
crossing. I think this can be achieved by introducing the black hole
material in the region where the particles goes in.

Thank you again!

Regards.

------------------------------------------------------------------------------------------
                                              Lic. Federico Alejandro
Geser,
                                PhD. Student – Of. 232 - FAMAF (UNC),
                                              Córdoba CONICET - Argentina,
                                                               D.N.I.:
34.682.776.
------------------------------------------------------------------------------------------

2017-05-09 4:54 GMT-03:00 Francesco Cerutti <Francesco.Cerutti_at_cern.ch>:

>
> Dear Federico,
>
> note in addition that, contrary to what you said, mgdraw does allow to
> incercept particles also at region boundary crossing (ENTRY BXDRAW) and not
> only right after an interaction (ENTRY USDRAW).
>
> Still, as pointed out by Stefan, you are not supposed to interfere there
> with particle transport, not to spoil basic conservation laws. The
> exception is represented by the usrmed routine, where a particle can be
> killed by zeroing its weight (WEE).
>
> User routines and respective variables are treated to some extent in the
> advanced course material, which you can find looking at the Paris course
> timetable of last year https://indico.cern.ch/event/4
> 89973/timetable/#20160511
>
> Kind regards
>
> Francesco
>
> **************************************************
> Francesco Cerutti
> CERN-EN/STI
> CH-1211 Geneva 23
> Switzerland
> tel. ++41 22 7678962
> fax ++41 22 7668854
>
> On Tue, 9 May 2017, Stefan Roesler wrote:
>
> [This sender failed our fraud detection checks and may not be who they
>> appear to be. Learn about spoofing at http://aka.ms/LearnAboutSpoofing]
>>
>>
>> Dear Federico
>>
>> The access to variables, phase space, etc is intentinally limited to
>> actions that conserve basic laws, such as energy-momentum conservation. It
>> might be easier to advise you on available options if you describe exactly
>> what you would like to do.
>>
>> Cheers
>> Stefan
>>
>>
>> On Mon, 8 May 2017, Federico Geser wrote:
>>
>> Dear FLUKA experts,
>>>
>>> I'm trying to create a phase space for my simulation containing some of
>>> the
>>> relevant quantum variables (kinetic energy, position, movement direction
>>> for
>>> the different particle types involved, primaries and secondaries).
>>>
>>> I have two questions requiring help/hint from FLUKA experts:
>>>
>>> 1) I know that some Monte Carlo codes (PENELOPE for example) incorporate
>>> relative simple ways to compute phase spaces as well as their further
>>> use
>>> for
>>> simulations. Is there any easy process (may be input card) to handle
>>> phase
>>> space generation/lecture in FLUKA (directly by means of FLAIR, or
>>> separately?)
>>>
>>> 2) Besides the existence of such a way, I would really appreciate to get
>>> some
>>> information about some variables in FLUKA in order to be capable of
>>> programming my own routine for phase space management. Following step by
>>> step
>>> the FLUKA manual I found that the mgdraw.f subroutine appears as an
>>> option
>>> to
>>> this aim. However the control criterion for phase space activation seems
>>> to be
>>> "interaction", but I really need to control the phase space activation
>>> by
>>> "crossing a surface" or "entering a body" (after that I would
>>> stop/"kill"
>>> the
>>> particle). Thereby, I am interested in knowing the internal variable
>>> name
>>> used
>>> by FLUKA for the bodies/regions,i.e. how body or region indices are
>>> handled?
>>> And which are the associated subroutines where they are
>>> defined/accessible?
>>> Moreover, is there any internal counter for labeling all simulated
>>> particles,
>>> as NP counts for the primary showers?
>>>
>>> As I mentioned, I have followed FLUKA manual instructions and I have
>>> tried
>>> with mgdraw.f routine without success at the moment, due to the
>>> limitation
>>> associated with the implemented control criterion (physical interaction
>>> unlike
>>> something associated to particle position). In this context, I am
>>> wondering if
>>> the mgdraw.f routine is a good or bad starting point to create phase
>>> space
>>> as
>>> I need (value of quantum variables after crossing a surface or entering
>>> a
>>> body/region).
>>>
>>> Any help/hint by FLUKA experts is really appreciated,
>>>
>>> Thanks in advance,
>>>
>>> Regards,
>>>
>>> -----------------------------------------------------------
>>> ------------------
>>> -------------
>>> Lic. Federico
>>> Alejandro Geser,
>>> PhD. Student ? Of. 232 - FAMAF
>>> (UNC),
>>> Córdoba
>>> CONICET -
>>> Argentina,
>>>
>>> D.N.I.: 34.682.776.
>>> -----------------------------------------------------------
>>> ------------------
>>> -------------
>>>
>>>
>>>
>>>


__________________________________________________________________________
You can manage unsubscription from this mailing list at https://www.fluka.org/fluka.php?id=acc_info
Received on Tue May 09 2017 - 18:44:24 CEST

This archive was generated by hypermail 2.3.0 : Tue May 09 2017 - 18:44:31 CEST