Date: Wed, 3 Nov 2021 16:54:24 +0100
Dear Paola, thank you very much for your time.
The thing is although the only change is in the geometry (yes, the
addition of a block of lead on the right side of the vacuum chamber and
a slight rotation of the thick block of lead in the direction of the
beam), the result of the simulation are totally different.
While in graph run_2_1 (from minerva_2_1.inp) radiation has a clear
directional projection to the right (due to the interaction of the beam
with the mirror surface placed inside the vacuum chamber), in graph
run_2_4 the projection is isotropic.
Also, note that in run_2_4 we have radiation going through the back wall
with doses of 1E8 uSv/h but not in graph run_2_1. It seems like the
energy for the photons in run_2_4 is higher than in run_2_1.
Could that mean that the hsource.f file isn't reading correctly the
energy file .dat.?
This can be related to the last FLUKA update?
How can we solve it?
Regards,
Carolina
On 28/10/2021 16:13, Paola Sala wrote:
>
> Dear Carolina
>
> could you please explain what is incorrect in the results?
>
> The geometry differs between the two versions, in particular version
> 2_4 adds a block of lead whose effect is clearly visible in the plot
> you sent. Is there anything else that puzzles you?
>
> Regards
>
> Paola
>
> On 10/28/21 10:09 AM, Carolina Gutierrez Neira wrote:
>>
>> Dear experts,
>> In the first semester of 2020, we simulated a new beamline at the
>> ALBA synchrotron (minerva_2_1.inp) that was working properly.
>> Recently, after a minor update of the geometry (minerva_2_4.inp),
>> when we run again the file the results are totally different and
>> incorrect. We suspect the program isn’t reading correctly the
>> hsource.f file.
>> Could you please check the files and help us to solve the issue?
>> Thanking you in advance,
>> Carolina
>>
>> --
>>
>> --
>>
>>
>> Carolina Gutiérrez Neira
>>
>> Radiation Protection - Health & Safety Office
>>
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(image/jpeg attachment: run_2_1.jpg)
(image/jpeg attachment: run_2_4.JPG)