Date: Wed, 20 Mar 2024 10:06:35 +0100
dear experts , in attached the characteristics of my OS
thanks a lot
Annamaria
Il 2024-03-19 16:29 Paola Sala ha scritto:
> Please check which version of gfortran and glibc you have, by typing
> gfortran --version
>
> and
>
> ldd --version
>
> Paola
> On 3/19/24 15:28, muoio wrote:
>> My OS is Ubuntu 18.10
>> is it compatible for FLUKA 2023.3.3?
>> Annamaria
>>
>> Il 2024-03-19 14:39 Paola Sala ha scritto:
>>> Hi
>>> fluka2011 is very old, it does not yet include the pointwise
>>> treatment
>>> (and many other new/improved features)
>>> Please upgrade, you will find the fluka2023 version on
>>> www.fluka.org
>>> [1].
>>> Also, from the same website, please download the python3 version of
>>> flair
>>> (flair-2.3-0dpy3 [2])
>>> Regards
>>> Paola
>>>
>>> On 3/19/24 11:57, muoio wrote:
>>>
>>>> dear experts, unfortunately I can't find it in my fluka and in the
>>>> interface
>>>> Flair graphics the LOW-PWXS card, the fluka version is version
>>>> 2011.2x-6
>>>> the flair version:2.3-0
>>>>
>>>> can you help me?
>>>> Annamaria
>>>>
>>>> Il 2024-03-18 17:05 muoio ha scritto:
>>>> Thanks, I'll try the advice
>>>> Annamaria
>>>> Il 2024-03-18 16:47 Paola Sala ha scritto:
>>>> Dear Annamaria
>>>> Probably I do not understand correctly your question, I'll try some
>>>> hints:
>>>> You do not need anything specifics for alphas, besides the low-pwxs.
>>>>
>>>> The PRECISION default already activates the transport of all
>>>> ions,
>>>> and the transport of neutrons down to thermal.
>>>> LOW-PWXS refer to neutrons...but: If it is not there, neutron
>>>> interactions are treated in a "multi-group" approach. This means
>>>> both
>>>> a treatment based on neutron energy intervals, and some limitation
>>>> in
>>>> the outcome of interactions,. In particular protons, alphas and
>>>> other
>>>> charged are not really generated, their energy is simply deposited
>>>> on
>>>> the point of production--> no alphas
>>>> With low-pwxs, you get two things: continuous neutron energy, AND
>>>> fully correlated generation of all interaction products--> yes
>>>> alphas
>>>>
>>>> Then, I see a problem in your geometry: the second target region
>>>> (regSiC4) does not exist: it is defined as contained in a 10 micron
>>>> long cylinder, and downstream
>>>> of a plane at 2.5 cm from the cylinder entrance. This is a null
>>>> region, thus you'll get no results from your boundary crossings.
>>>>
>>>> In view of the short alpha range, if you want to be sure to see them
>>>>
>>>> it would be worthwhile to add a usrtrack or a userbin scoring alphas
>>>>
>>>> within the target.
>>>>
>>>> You can also look at the fluka output file, at the end there is a
>>>> summary of particles produced in the run
>>>>
>>>> Hope this helps
>>>> Paola
>>>> On 3/17/24 23:16, muoio wrote:
>>>>
>>>> Thanks very much for the quick response,I looked the manual
>>>>
>>>> http://www.fluka.org/content/manuals/online/LOW-PWXS.html
>>>>
>>>> but for alpha particles do you have some example?
>>>> thanks a lot
>>>> A. Muoio
>>>>
>>>> Il 2024-03-17 19:02 Paola Sala ha scritto:
>>>> Hello
>>>> in order to produce and transport charged particles from low energy
>>>> neutron interactions you have to activate the new point-wise
>>>> treatment,
>>>> by adding the LOW-PWXS card.
>>>> Please have a look at its description in the manual, and ask if
>>>> something is not clear
>>>> Regards
>>>> Paola
>>>> On 3/16/24 16:08, muoio wrote:
>>>>
>>>> good morning experts, I tried to insert the analysis request for
>>>> alpha particles into my simulation, but I get a result that I don't
>>>> expect... practically zero.
>>>> The situation is
>>>>
>>>> Energy Neutron = 14.1 MeV Number of primary= 10^8 x 5 run
>>>> Fluence = 4.45 10^11 (n/cm2) Profile Beam=Flat
>>>> Surface = (5 x 5) mm
>>>> Spessore 100 um
>>>>
>>>> I expect alpha particles from secondary reactions induced by the
>>>> interaction of neutrons with SiC.
>>>> I attach the *.inp file that I tried to run
>>>>
>>>> thanks a lot
>>>> Annamaria Muoio
>>>
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>>> Links:
>>> ------
>>> [1] http://www.fluka.org
>>> [2] http://www.fluka.org/flair/flair-2.3-0dpy3.src.rpm
>>
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