Explanation of the results- FLUKA input file patch

From: 파르자나아호마드 <mjamil_at_konkuk.ac.kr>
Date: Thu, 15 Nov 2012 13:02:30 +0900

 Dear Dr. Stefan Roesler,

 

Thank you for your response to our question.

 

We inserted the neutrons onto the Polyethylene layer, which produced the protons via (n, p) reaction.

N + Polyethylene ----> Protons + Recoil fragments

 

We are sending you the sketch out put of the results, this will help you to find out how we have evaluated the secondary protons via FLUKA code.

 

Further we are sending you the complete FLUKA code we have used for this study.

 

We hope you will kindly guide us , how to implement the neutron transport in FLUKA based on a multigroup
approach without explicit generation of secondaries.

 

with best wishes,

 

Dr. M. Jamil & Kim Hyeon Ki

 

 

 

 

 

------------ 원본 메일 내용 ------------
보낸 사람 : "Stefan Roesler"<sroesler@mail.cern.ch>
받는 사람 : "파르자나아호마드" <mjamil@konkuk.ac.kr>
참      조 : fluka-discuss@fluka.org
메일 제목 : Re: Some Explanation of FLUKA results is Requested !
보낸 날짜 : Wed, 14 Nov 2012 12:24:47 +0100
 

Dear Dr.Jamil

As you may know, neutron transport in FLUKA is based on a multigroup
approach without explicit generation of secondaries, except for recoils on
hydrogen and protons from 14-N(n,p) reactions.

Thus, may I ask you how you have computed the number of secondaries? For
an efficient investigation I would also need your input file and any user
routines that you use. Please sumit those.

Cheers
Stefan

On Wed, 14 Nov 2012, ???????? wrote:

>
> Nov 14th , 2012
>
>
>
> Dear Fluka Users,
>
> "fluka-discuss" fluka-discuss@fluka.org
>
>
>
> As the general User of the Fluka MC code, we are sending you this mail.
>
> We hope that some one will kindly respond to our question.
>
> For the detection of fast neutron, we inserted a fast neutrons in the energy range
> of En = 20 MeV onto the Polyethylene ?conve! rtor and evaluated the response via
> FLUKA and GEANT 4 MC codes. ( The Results are attached as EXECL File).
>
> The results are taken via GEANT4 and FLUKA separately, however If you have a look
> into the results , these show a large discrepancies as obtained by the FLUKA.
>
> It shows the 4 different peaks with different energies, however for the GEANT4 case
> the response increases smoothly.
>
> The data was taken 2-3 times repeatedly in order to re-confirm it.
>
>
>
> We hope that soem one can explain us about the FLUKA graphs.
>
>
>
> Waiting for your reply,
>
> Dr. M. Jamil & Kim Hyeon Ki
>
> Konkuk University,
>
> Seoul 143-701, KOREA
>
> EMail: mjamil@konkuk.ac.kr, go45600@konkuk.ac.kr
>
>
>
>
>
>
>
>
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>
>
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Received on Thu Nov 15 2012 - 09:26:09 CET

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