RE: [fluka-discuss]: Flux/fluence

From: Mihaela Parvu <mihaela.parvu_at_cern.ch>
Date: Mon, 13 Aug 2018 12:48:31 +0000

I do not think that this is the problem because I made a new folder with a new .flair file.
________________________________________
From: Andrea Fontana [andrea.fontana_at_pv.infn.it]
Sent: 13 August 2018 14:43
To: Mihaela Parvu
Cc: andrea.fontana_at_pv.infn.it; fluka-discuss_at_fluka.org
Subject: RE: [fluka-discuss]: Flux/fluence

Hi Mihaela,
   the error is simply due to the fact that you are using the
renamed .inp file (MIN_v2.inp), with the old MIN.flair file
(which still try to load the old file MIN.inp).

Simply remove the "_v2" from the filename and use MIN.inp
or create a new .flair file by reading the .inp from an empty
Flair project.

Andrea

> Dear Andrea,
>
> Thank you so much for your help. Unfortunately, now I get this plot error.
> It's like I do not have neutrons, but it is impossible. Also, When I try
> to plot the geometry I get another error:
>
> plot 'MIN_v2_geometry.dat' ind 0 us 1:2 w l ls 1 notitle
> <e< line 0: warning: Skipping data file with no valid points
>
> NEUTRONS USRBDX
>
> Started 2018.08.13 14:19:31
> reset
> set terminal wxt 0 enhanced raise title 'MIN_try1.flair-0: USR-1D ../MIN
> v2 31'
>
> set title 'USR-1D /MIN v2 31'
> unset grid
> set xlabel ''
> set xtics
> set ylabel ''
> set ytics
> set logscale x
> set logscale y
> unset logscale z
> unset logscale cb
> unset logscale x2
> unset logscale y2
> set key default
> plot '../modified_CERN/MIN_v2_31_tab.lis' ind 0 us 1:3 w steps lw 2 lc rgb
> 'red' t 'Detector 1','' ind 0 us (sqrt($1*$2)):3:($3*$4/100.) w errorbars
> lw 2 lc rgb 'red' pt 0 ps 1 notitle
> <e< gnuplot> plot '../modified_CERN/MIN_v2_31_tab.lis' ind 0 us 1:3 w
> steps lw 2 lc rgb 'red' t 'Detector 1','' ind 0 us
> (sqrt($1*$2)):3:($3*$4/100.) w errorbars lw 2 lc rgb 'red' pt 0 ps 1
> notitle
>
> <e<
>
> ^
>
> <e< line 0: all points y value undefined!
>
> Gnuplot error
>
> ________________________________________
> From: Andrea Fontana [andrea.fontana_at_pv.infn.it]
> Sent: 13 August 2018 13:46
> To: Mihaela Parvu
> Cc: fluka-discuss_at_fluka.org
> Subject: Re: [fluka-discuss]: Flux/fluence
>
> Dear Mihaela,
> I have run your example and I see that you have forgotten the
> normalization to the area of the first USRBDX card (output 25).
>
> Moreover this normalization should read 360000, while the
> normalization of your second USRBDX card should read 360720.36
> (and not 360000), to take into account the 6mm thickness of the wall.
>
> Even with this normalization correctly done, you will still
> see differences because of the muons interactions in the steel of
> the wall and in the argon of the target. If you put both materials
> to vacuum, you will get the same fluxes.
>
> In attachment a corrected version of your input (I have added two
> USRBIN cards to better visualize your results).
>
> Perhaps this discussion is useful:
>
> http://www.fluka.org/web_archive/earchive/new-fluka-discuss/9211.html
>
> Hope this helps,
> Andrea
>
>> Dear Fluka experts,
>>
>> I am trying to simulate muon induced neutrons. For this I am using my
>> own
>> predefined source of muons with flux as a function of energy. When I use
>> USRBDX, the fluence I am getting from VOID to wall does not coincide
>> with
>> the incident one.
>> Can you please tell me help me? I have attached the input files
>>
>
>
> --
> ========================================================================
> Dr. Andrea Fontana tel: +39 0382 987991
> Istituto Nazionale fax: +39 0382 423241
> di Fisica Nucleare
> Sezione di Pavia e-mail: andrea.fontana_at_pv.infn.it
> Via Bassi 6 web : www.pv.infn.it/~fontana
> 27100 PAVIA, Italy
> ========================================================================
>
>
>


--
========================================================================
Dr. Andrea Fontana                    tel: +39 0382 987991
Istituto Nazionale                    fax: +39 0382 423241
di Fisica Nucleare
Sezione di Pavia                      e-mail: andrea.fontana_at_pv.infn.it
Via Bassi 6                           web   : www.pv.infn.it/~fontana
27100 PAVIA, Italy
========================================================================
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Received on Mon Aug 13 2018 - 16:07:27 CEST

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