Re: [fluka-discuss]: Re: Definition of Radioactive Target

From: NKANYISO ROBERT Mantengu <3477531_at_myuwc.ac.za>
Date: Mon, 10 Aug 2015 11:06:00 +0200

Thank you...

On Fri, Aug 7, 2015 at 5:09 PM, Fasso, Alberto <fasso_at_slac.stanford.edu>
wrote:

> ------------------------------
> *From:* owner-fluka-discuss_at_mi.infn.it <owner-fluka-discuss_at_mi.infn.it>
> on behalf of NKANYISO ROBERT Mantengu <3477531_at_myuwc.ac.za>
> *Sent:* Friday, August 7, 2015 4:49 AM
> *To:* Alberto Fasso
> *Cc:* fluka-discuss_at_fluka.org; Joachim Vollaire
> *Subject:* Re: [fluka-discuss]: Re: Definition of Radioactive Target
>
> What will be the units of the DOSE-EQ and the fluence scored using the
> USRBIN cards.
>
> pSv/decay and cm-2/decay
>
> Alberto
>
>
> Regards
> N.R. Mantengu
>
> On Thu, Jul 16, 2015 at 4:22 PM, Alberto Fasso <fasso_at_mail.cern.ch> wrote:
>
>> Dear Nkanyiso,
>>
>> everything is explained in detail (and, I think, very clearly) in
>> this Note to command BEAM in the Manual.
>>
>> 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 PER DECAY, 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.
>>
>> Alberto
>>
>>
>> On Thu, 16 Jul 2015, NKANYISO ROBERT Mantengu wrote:
>>
>> Sorry Joachim, I'm confused again on how do I normalize my score
>>> quantities to my 230-Th source activity,
>>> because the scoring cards are scoring DOSE-EQ and the FLUENCE.
>>>
>>> Here is the input file.
>>>
>>> Regards
>>> N.R. Mantengu
>>>
>>> On Thu, Jun 11, 2015 at 11:44 AM, NKANYISO ROBERT Mantengu <
>>> 3477531_at_myuwc.ac.za> wrote:
>>> Thank you Joachim, this is what I was looking for.
>>>
>>> Cheers,
>>> Nkanyiso
>>>
>>> On Wed, Jun 10, 2015 at 5:27 PM, Joachim Vollaire <
>>> joachim.vollaire_at_cern.ch> wrote:
>>>
>>> Hi Nkanyiso,
>>>
>>> Just to be sure, you want to use a radioactive isotope as a
>>> volumic source ? Not a particle
>>> beam, is this correct ?
>>>
>>>
>>>
>>> If this is the case, in the example below I am defining a
>>> cylindrical shape Tl-204 source
>>> (you can overlay the source to a material in the geometry if the
>>> radionuclides are within a
>>> matrix material):
>>>
>>>
>>>
>>> BEAM
>>> 1.0ISOTOPE
>>>
>>> BEAMPOS 0.0 0.15 0.0 0.24
>>> 0.0 CYLI-VOL
>>>
>>> BEAMPOS 0.0 0.0
>>> -0.125
>>>
>>> HI-PROPE 81. 204.
>>>
>>> *
>>>
>>> Activate the decay in semi-analogue mode
>>>
>>>
>>>
>>> RADDECAY 2.0
>>>
>>> *
>>>
>>>
>>>
>>> Use -1.0 for the card below as you are in semi-analogue mode
>>>
>>>
>>>
>>> DCYSCORE -1.0 0. 0. DR-All
>>> DR-All USRBIN
>>>
>>> *
>>>
>>> *
>>>
>>> USRBIN 10.0 DOSE-EQ -45.0 80.0 0.4
>>> 80.0DR-All
>>>
>>> USRBIN -80.0 -0.4 -80.0 160.0 1.0
>>> 160.0&
>>>
>>> *
>>>
>>>
>>>
>>> Your results will be normalized per decay of the radionuclides
>>> defined with the HI-PROPE
>>> card. If you have a xxx Bq source then you have to normalize the
>>> score quantities to your
>>> source activity
>>>
>>> Hoping this help
>>>
>>> Joachim
>>>
>>>
>>>
>>>
>>>
>>> From: NKANYISO ROBERT Mantengu [mailto:3477531_at_myuwc.ac.za]
>>> Sent: 10 June 2015 12:03
>>> To: fluka-discuss_at_fluka.org
>>> Cc: Joachim Vollaire
>>> Subject: Definition of Radioactive Target
>>>
>>>
>>>
>>> Dear FLUKA users,
>>>
>>> I have a problem with defining the radioactive target, where I will just
>>> measure the activity of
>>> the target without hitting it with a beam.
>>>
>>> Any idea will be appreciated.
>>>
>>> Regards
>>>
>>> N.R Mantengu
>>>
>>>
>>>
>>>
>>>
>


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Received on Mon Aug 10 2015 - 12:56:51 CEST

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