Re: [Fwd: Neutron capture in Gd-doped liquid scintillator.]

Dear Ivana,

Concerning FLUKA there is a common block RESNUC (see its description in "fluka2008.3/flukapro/(RESNUC)" file ) and the screen output which can be obtained as explained here
http://www.fluka.org/fluka.php?id=man_onl&sub=97#RES_put

What we would like to access is the following. Having a beam particle to know:

• target particle
• list of secondaries including nuclei
• process occured

As an example we want to simulate neutron propagation through Gd dopped liquid scintillator with help of both G4 and FLUKA (thus - VMC). We seek for a Gd capture of neutrons, produced gammas, nuclei remnants. If this info is already available it would be just great! Perhaps, this is present (fully, or partially in fluka_vmc/source/Ffheavy.h, but I do not know about a general VMC access to this info).

Kind regards, Dmitry

Ivana Hrivnacova пишет:
> Dear Dmitry,
>
> There is now a reply to my question in the forum;
> I include it also below in this mail.
> In principle, this procedure could be done via VMC,
> as we have interfaced the necessary functions,
> like the creator process for a secondary etc.
> Could you explain in more detail what exactly
> do you need and which are the access functions
> in Fluka that you want to use and which you do
> not find in VMC?
>
> Thank you,
>
> Ivana
>
> *** Discussion title: Hadronic Processes
>
> There is no easy way to do this, but you could try:
>
> 1) Loop over tracks after the capture and test that they are created by
> the capture process. Do this by calling track->GetCreatorProcess() and
> checking the process name.
>
> 2) Then get the particle by doing track->GetDynamicParticle().
>
> 3) Once you have the dynamic particle you can check that the track is a
> nucleus, and also look at things like mass, charge, momentum, etc.
>
>
> Dmitry Naumov wrote:
>> Dear colleagues,
>>
>> I am not an expert in Fluka, but it seems that Fluka has these access
>> functions, what is left is to organize vmc like interface to them. If
>> G4 does not have these functions then perhaps vmc functions should
>> return something like 'false' value.
>> Best regards, Dmitry
>>
>> Ivana Hrivnacova пишет:
>>> Hi,
>>>
>>> I don't know. I have now posted the question in G4 hypernews:
>>> http://hypernews.slac.stanford.edu/HyperNews/geant4/get/hadronprocess/973.html
>>>
>>> And what about Fluka?
>>>
>>> Best regards,
>>>
>>> Ivana
>>>
>>> Carminati Federico wrote:
>>>> Hello Iliya,
>>>> I frankly ignore whether this information is available in G4.
>>>> Ivana, do you know? Best regards,
>>>> Federico Carminati
>>>> CERN-PH 1211 Geneva 23
>>>> Switzerland
>>>> Tel: +41 22 76 7495:
>>>
>>>> Fax: +41 22 76 68505
>>>> Mobile: +41 76 487 4843
>>>>
>>>>
>>>>
>>>> On 24 Dec 2008, at 16:05, Illya I. Shapoval wrote:
>>>>
>>>>> Dear VMC team! I need an effective technic for the neutron capture
>>>>> and final nucleus state monitoring in my set of tasks too. It
>>>>> would be realy interesting to hear an answer on Maxim's question.
>>>>>
>>>>> With respect,
>>>>> Illya Shapoval
>>>>> ----- Original Message -----
>>>>> *From:* Dmitry Naumov <mailto:naumov_at_nusun.jinr.ru>
>>>>> *To:* vmc_at_lxbuild091.cern.ch <mailto:vmc_at_lxbuild091.cern.ch>
>>>>> *Sent:* Wednesday, December 24, 2008 10:57 AM
>>>>> *Subject:* [VMC] [Fwd: Neutron capture in Gd-doped liquid
>>>>> scintillator.]
>>>>>
>>>>>
>>>>> Dear VMC team it seems that this message was either lost and did
>>>>> not arrived to you or left without an asnwer. As we need an
>>>>> answer
>>>>> could anyone please address it once? Thanks! Dmitry
>>>>>
>>>>>
>>>>> -------- Исходное сообщение --------
>>>>> Тема: Neutron capture in Gd-doped liquid scintillator.
>>>>> Дата: Wed, 26 Nov 2008 17:17:56 +0300
>>>>> От: Maxim Gonchar <gmaxfl_at_gmail.com>
>>>>> Отвечать: gmaxfl_at_gmail.com
>>>>> Кому: vmc_at_root.cern.ch
>>>>> Копия: Dmitry Naumov <naumov_at_nusun.jinr.ru>
>>>>>
>>>>>
>>>>>
>>>>> Hello,
>>>>>
>>>>> I want to simulate neutron propagation through the Gd-doped
>>>>> liquid scintillator. Is there any way to get information
>>>>> about the nucleus that captures neutron?
>>>>>
>>>>> Thank you in advance.
>>>>>
>>>>> regards, Maxim Gonchar
>>>>> mailto:gmaxfl_at_gmail.com
>>>>
>>>
>
Received on Tue Jan 13 2009 - 08:54:47 CET