Dear Agnieszka,
Slide 21 of the earlier suggested lecture from the FLUKA beginner course has an example of Co-60 radioactive source definition. As it can be seen from that example, as well as spelled out in the BEAM card manual, "For (radioactive) isotopes, use the name ISOTOPE and specify further the isotope properties by means of option HI-PROPErt. In this case WHAT(1) and WHAT(2) are meaningless. See Note 8) for instructions on how to run cases where the source is a radioactive isotope."
Regarding the scoring: You are scoring electron fluence in the region. If you are interested in dose equivalent, the (generalized) particle you must score is DOSE-EQ. Then filtering by particle type and selecting a specific set of fluence-to-dose-equivalent conversion factors using AUXSCORE becomes meaningful. I encourage you to review the lectures and exercises of one of the recent FLUKA Beginner Courses, especially the scoring and activation lectures - relevant to your problem.
If you just search the web for fluka isotope source you will easily find examples of how to model Co-60 source in the archive of this discussion board, including this example:
http://www.fluka.org/web_archive/earchive/new-fluka-discuss/att-7836/isotope.inp
Regards,
George
----- Original Message -----
From: "Agnieszka Witkowska" <witkowskaagnieszka07_at_gmail.com>
To: "George Kharashvili" <georgek_at_jlab.org>
Cc: "FLUKA Discussion List" <fluka-discuss_at_fluka.org>
Sent: Friday, October 13, 2017 2:51:50 AM
Subject: Re: [fluka-discuss]: Dose scoring for radioactive isotope
Dear George,
I used AUXSCORE for USRTRACK scoring with SDUM=EWT74. I do not understand
how to interprete output results with the usage of AUXSCORE and where in
output file I can find it's results.
I attached my input file and .sum and .lis as output files.
Thank You for your help in advance.
Best regards,
Agnieszka Witkowska
2017-10-12 18:29 GMT+02:00 George Kharashvili <georgek_at_jlab.org>:
> Dear Agnieszka,
>
> In addition to the FLUKA manual, the activation lecture slides from the
> past FLUKA courses is a good resource where you can learn how to treat
> decay radiation. Please take a look at the latest one at
> https://urldefense.proofpoint.com/v2/url?u=https-3A__indico.cern.ch_event_604018_contributions_2435668_&d=DwIBaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=VEsjWcjHR_RwJLerQJyK4g&m=bzoPEUE9YVxt0T7qGwUjpcnhp2j5ZTw1YOslHfKVN0Y&s=rqmC5IAOxn_gc1gagfFOpXCTY4yG0NGGdTdFRSAlfXU&e=
> attachments/1395470/2242783/19_Activation_2017.pdf
>
> You can also find working examples in the past courses, like this one
> https://urldefense.proofpoint.com/v2/url?u=https-3A__indico.cern.ch_event_296741_contributions_1657823_&d=DwIBaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=VEsjWcjHR_RwJLerQJyK4g&m=bzoPEUE9YVxt0T7qGwUjpcnhp2j5ZTw1YOslHfKVN0Y&s=Oci24I_B_K490On-d5AL3Y9nm43qku6hs-VqRz_UBj0&e=
>
> Also, please carefully read the manual page for the BEAM card, note 8:
> When the radiation source is a radioactive isotope, requested by SDUM =
> ISOTOPE and defined by command HI-PROPErt, special rules must be observed.
> Note that if a stable isotope is input, nothing will occur, and no particle
> will be transported. On the other hand, if the isotope is radioactive, it
> will be necessary to request decay in semi-analogue mode (command RADDECAY
> with WHAT(1) > 1). If RADDECAY is not requested, nothing will occur, and no
> particle will be transported. Commands IRRPROFI and DCYTIMES are not
> allowed: decay secondaries are sampled over the whole decay time from zero
> to infinity, and all scoring will refer to the time integral of isotope
> activity (dose, fluence, current, yield or residual nuclei PERDECAY, not
> the corresponding rates at particular decay times as it happens in the
> "activation study" mode).
> Important: to score any quantity, command DCYSCORE must be issued with
> WHAT(1) = -1, and must be applying to all relevant estimators and
> detectors. Without DCYSCORE, no scoring will occur. For time-dependent
> calculations (see TCQUENCH, TIME-CUT) it is to be noted that transport of
> isotope decay secondaries starts with an age equal to the time of decay.
>
> As of AUXSCORE, it has two purposes: 1) associate scoring estimators with
> dose equivalent conversion factors and 2) filters by (generalized) particle
> identity (for example score the total, photon only, or neutron only dose
> equivalent). Without AUXSCORE your detector will default to AMB74
> conversion coefficients and dose equivalent from all particles.
>
> Regards,
> George
>
> ----- Original Message -----
> From: "Agnieszka Witkowska" <witkowskaagnieszka07_at_gmail.com>
> To: "FLUKA Discussion List" <fluka-discuss_at_fluka.org>
> Sent: Thursday, October 12, 2017 10:05:45 AM
> Subject: [fluka-discuss]: Dose scoring for radioactive isotope
>
> Dear Fluka Users,
>
> I have question regarding dose equivalent calculations for radioactive
> isotope.
>
> I am using RADDECAY and BEAM card for isotope source simulation and I am
> trying to calculate the dose in defined region with AUXSCORE and USRTRACK,
> however RADDECAY card also require DCYSCORE card to score the fluence from
> USRTRACK.
>
> Can You please advise if I should use both AUXSCORE and DCYSCORE for
> calculating the dose, or maybe for radioactive isotope I cannot use
> AUXSCORE?
>
> If it is possible to use AUXSCORE for radioactive isotope to calculate the
> dose can You please advise where in output file I can find it's results?
>
> Agnieszka Witkowska
>
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Received on Fri Oct 13 2017 - 17:46:50 CEST