Dear Mikhail,
Thanks for the files. I rember that if you use the two step method you
can have a source that each time launch a different particle depending
on which one is chosen by a random number generators. So i think it is
possible to have this feature included in a user written source. The
parameter that you should also change in the source is also the particle
current I think. For the beam I have to check if there is an option like
beam-part. So there is no defined particle.
Beste regards, Alessandro Calamida.
Il 08/04/2019 12:55, Mikhail Polkovnikov <Михаил Полковников> ha scritto:
> Dear Alessandro,
>
> There is a variable called AGESTK in FLKSTK which defines an age of
> the primary particle, but i think a transport and interaction process
> of each particle goes individually. If you push two particles with
> value AGESTK (NPFLKA) = +ZERZER in FLKSTK the result for scoring
> would be the same as if these two particles would have been emitted at
> the same time.
>
> In attachment i have tried to test such source file (without any king
> of energy and momentum conservation). One of the problems is how to
> define BEAM card for different particles correctly. Should it be
> neutron or alpha particle? I can't guarantee that FLUKA will not crash
> at some point.
>
>
> Best regards,
> Mikhail
>
>
>
> On 08.04.2019 11:45, Alessandro wrote:
>> Dear Mikhail,
>>
>> The goal to use two particle of different kind is that we want to
>> preserve the coeherence between the alpha particle and the neutron. I
>> was asking if it was possible to simulate the trasport of two
>> different particle in the same time for fluka. I do not understand
>> wery well how this thing of more than one particle works in the
>> stack. If I should push more than one I will have two particle
>> emitted at the same time?
>>
>> Best regards, Alessandro Calamida.
>>
>> Il 06/04/2019 08:08, Mikhail Polkovnikov <Михаил Полковников> ha
>> scritto:
>>> Dear Alessandro,
>>>
>>> You can push more than one particle in the FLUKA stack in your
>>> source routine. What is the point of using two particles in the same
>>> time especially of different kinds (do you want to preserve 4-vector
>>> before and after fusion)?
>>>
>>>
>>> From source.f file:
>>> * Push one source particle to the stack. Note that you could as well
>>> * push many but this way we reserve a maximum amount of space in the
>>> * stack for the secondaries to be generated
>>> * Npflka is the stack counter: of course any time source is called it
>>> * must be =0
>>>
>>>
>>> Best regards,
>>> Mikhail
>>>
>>>
>>> On 05.04.2019 13:02, Alessandro wrote:
>>>> Dear FLUKA experts,
>>>>
>>>> I have a source that generates fusion neutrons but I want to follow
>>>> the alpha particles too. It is possible to have a source that
>>>> launch both particles at the same time or it will always only one
>>>> of it at time?
>>>>
>>>> Best regards, Alessandro Calamida.
>>>>
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>>>
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Received on Mon Apr 08 2019 - 14:23:36 CEST