Date: Sun, 1 Jul 2018 15:26:55 +0200
Dear Luigi,
I tried once again to check the spectrums with EMFCUT and RADDECAY and I
have no idea why I am not able to get reasonable results for isotopes Ra226
and Co60. For Cs137 it looks fine (one main peak for 662keV).
Best regards,
Agnieszka
2018-06-17 20:42 GMT+02:00 Luigi Salvatore Esposito <
luigi.salvatore.esposito_at_cern.ch>:
> Dear Agnieszka,
> this topic was discussed here
>
> http://www.fluka.org/web_archive/earchive/new-fluka-discuss/11755.html
>
> Best, luigi
>
>
> On 17 Jun 2018, at 20:00, Agnieszka Witkowska <witkowskaagnieszka07_at_gmail.
> com> wrote:
>
> Dear Luigi,
>
> Thank You, I read the presentation and set up values for electron and
> gamma threshold however I am getting such error message:
> <Screenshot from 2018-06-17 19-58-41.png>
>
> What does it mean?
>
> Best regards,
> Agnieszka
>
>
> 2018-06-16 18:22 GMT+02:00 Luigi Salvatore Esposito <
> luigi.salvatore.esposito_at_cern.ch>:
>
>> Dear Agnieszka,
>> please keep the mail exchange on the list in order that also other can
>> profit.
>>
>> Concerning your question, please bear in mind that a transport transport
>> if always applied in a condensed history approximation used in a Monte
>> Carlo.
>> Appropriate cuts depend on your application.
>> This is discussed in this lesson given at last FLUKA course
>> https://indico.cern.ch/event/694979/contributions/2927124/
>>
>> If you really want to the full electron spectrum, place the radioactive
>> source inside your scoring region (i.e. change your setting of the BEAMPOS
>> card).
>>
>> Hope this could help.
>> Cheers, luigi
>>
>>
>> On 14 Jun 2018, at 18:10, Agnieszka Witkowska <
>> witkowskaagnieszka07_at_gmail.com> wrote:
>>
>> Dear Luigi,
>>
>> Thank You, missing EMFCUT probably explains all discrepancies in my
>> calculations. How should I set up DEFAULTS card and EMFCUT card to make
>> sure I will score all electrons (I need them for scoring with the model of
>> high-pressure ionization chamber, so I believe I need even low energy
>> electrons produced)? Should I just leave EMFCUT as blank with default
>> settings? I read the manual and it is not clear for me....
>>
>> Best regards,
>> Agnieszka
>>
>> 2018-06-14 1:03 GMT+02:00 Luigi Salvatore Esposito <
>> luigi.salvatore.esposito_at_cern.ch>:
>>
>>> Dear Agnieszka,
>>> could you be more specific why the results are not correct?
>>>
>>> I ran your Co60 input after having added a USRTRACK to score also photon
>>> fluence.
>>> And I see the two photon peaks at 1.17 and 1.33 MeV.
>>>
>>> The low energy electrons are not transported to the scoring region
>>> because of transport threshold that is
>>> 100 keV since you used PRECISIOn as DEFAULTS (it is recommended to set
>>> explicitly its value with EMFCUT, which is not present in your input).
>>>
>>> Cheers, luigi
>>>
>>>
>>> > On 12 Jun 2018, at 13:41, Agnieszka Witkowska <
>>> witkowskaagnieszka07_at_gmail.com> wrote:
>>> >
>>> > Dear Fluka Experts,
>>> >
>>> > I created input file with cylindrical target filled with air to check
>>> the spectrum of Cs137 and Co60 with RADDECAY card. I used USRTRACK card and
>>> scored electrons in the target, however I obtained really "strange" results
>>> not looking like spectrums of the requested isotopes. Can You please advise
>>> what is wrong in my inp files and why I cannot get correct results?
>>> >
>>> > I attached my both inp files and graphs.
>>> >
>>> > Best regards,
>>> > Agnieszka
>>> >
>>> >
>>> > <Cs137_spectrum_check.inp><Cs137_spectrum_check.png><Co60_sp
>>> ectrum_check2.inp><Co60_spectrum_check2.png>
>>>
>>>
>>
>>
>
>
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(image/png attachment: Cs137_spectrum.png)
(image/png attachment: Ra226_spectrum.png)
(image/png attachment: Co60.png)
- chemical/x-gamess-input attachment: Co60_spectrum_check.inp