<EE47F87F392CC341B248138ECD76CD110A6A86_at_MBX04.ad.oak.ox.ac.uk> <CAKT5vugDOA=CJYOZjNbWH9g6fp-32ba5es2L=Cp4vCoRw88mqw_at_mail.gmail.com>
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Hi I want to ask question which is closely related with this topic.
I want to get optical photons distribution (angular, energy) that
irradiated by Yag screen ( scintillator material Yag(Ce) yttrium
aluminum garnet ) via USRBDX card when electron beam with 5Mev energy
hits it.
http://www.detectors.saint-gobain.com/uploadedFiles/SGdetectors/Documents/Product_Data_Sheets/YAG-Data-Sheet.pdf
I want to define scintillator material properties with fluka using
OPT-PROD card with SCINT-WV option but fluka gives an error.
I have never done such kind of simulation and need experts help in order
to do it correctly. I am attached my input file and ask you to look and
say what I did wrong.
btw. I played with parameters of my input file a little and switched on
Cerenkov and Transition(TR-Radia) radiation and disable OPT-PROD card
with SCINT-WV in order to get some results but USRBDX plot with option
OPTIPHOT gives me an empty data range.
can someone help me to define correct parameters for scintillator
material Yag(Ce) and get correct distribution (angular, energy) of
optical photons via USRBDX card?
http://en.wikipedia.org/wiki/Yttrium_aluminum_garnet
Thanks!
On 06.12.2012 21:08, Nicholas Bolibruch wrote:
> Hi Francesca, I have done some work with optical photons in the past.
>
> If you're looking to create visible light in your scintillator at 423
> nm, you want to enter 4.23E-5 cm in the wavelength entries for the
> OPT-PROD and OPT-PROP cards. I noticed you entered in 0.00423 instead.
>
> After changing the scintillator assigned material of PLASCINT to
> something default, such as PMMA, and modifying the OPT-PROD/OPT-PROP
> cards to the proper wavelengths, the optical photons appear in the USRBIN.
>
> So the issue either lies how the material was defined or a bug in
> Fluka when it attempts to assign optical properties to a material number.
>
> Hope that helps.
>
> Nicholas Bolibruch
>
> Canadian Light Source Inc. <http://www.lightsource.ca/>
>
> Instrumentation Analyst
>
> Controls & Instrumentation Development
>
> +1 306 657 3643
>
>
>
> On Mon, Dec 3, 2012 at 10:03 AM, Francesca Fiorini
> <francesca.fiorini_at_oncology.ox.ac.uk
> <mailto:francesca.fiorini_at_oncology.ox.ac.uk>> wrote:
>
> Dear Fluka users,
>
> I am trying to simulate the production of scintillation photons
> from a BC400 scintillator immerse in water and irradiated by a
> proton beam. Since this is my first simulation with optical
> photons I (more or less) followed the example in section 12.2.4 of
> the manual, but apparently something is missing or wrong in my
> input, because there is no light production or at least I cannot
> detect any optical photon from usrbin or any other scoring card.
> Could anyone help? The input file is attached.
>
> Many thanks
> Francesca
>
> P.S.: So far I kept the Cherenkov light generation off, but once
> the simulation works I am going to activate that too.
>
> Dr Francesca Fiorini
> Gray Institute for Radiation Oncology and Biology
> Old Road Campus Research Building
> Off Roosevelt Drive
> University of Oxford
> Oxford, OX3 7DQ
> UK
>
>
>
>
> --
> --
> Nicholas Bolibruch
>
>
>
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<div class="moz-cite-prefix">Hi I want to ask question which is
closely related with this topic. <br>
<br>
I want to get optical photons distribution (angular, energy) that
irradiated by Yag screen ( scintillator material Yag(Ce) yttrium
aluminum garnet ) via USRBDX card when electron beam with 5Mev
energy hits it. <br>
<a class="moz-txt-link-freetext"
href="http://www.detectors.saint-gobain.com/uploadedFiles/SGdetectors/Documents/Product_Data_Sheets/YAG-Data-Sheet.pdf">http://www.detectors.saint-gobain.com/uploadedFiles/SGdetectors/Documents/Product_Data_Sheets/YAG-Data-Sheet.pdf</a><br>
<br>
I want to define scintillator material properties with fluka using
OPT-PROD card with SCINT-WV option but fluka gives an error.<br>
I have never done such kind of simulation and need experts help in
order to do it correctly. I am attached my input file and ask you
to look and say what I did wrong.<br>
<br>
btw. I played with parameters of my input file a little and
switched on Cerenkov and Transition(TR-Radia) radiation and
disable OPT-PROD card with SCINT-WV in order to get some results
but USRBDX plot with option OPTIPHOT gives me an empty data range.<br>
<br>
can someone help me to define correct parameters for scintillator
material Yag(Ce) and get correct distribution (angular, energy)
of optical photons via USRBDX card?<br>
<a class="moz-txt-link-freetext"
href="http://en.wikipedia.org/wiki/Yttrium_aluminum_garnet">http://en.wikipedia.org/wiki/Yttrium_aluminum_garnet</a><br>
<br>
Thanks!<br>
<br>
<br>
On 06.12.2012 21:08, Nicholas Bolibruch wrote:<br>
</div>
<blockquote
cite="mid:CAKT5vugDOA=CJYOZjNbWH9g6fp-32ba5es2L=Cp4vCoRw88mqw_at_mail.gmail.com"
type="cite">Hi Francesca, I have done some work with optical
photons in the past. <br>
<br>
If you're looking to create visible light in your scintillator at
423 nm, you want to enter 4.23E-5 cm in the wavelength entries for
the OPT-PROD and OPT-PROP cards. I noticed you entered in 0.00423
instead. <br>
<br>
After changing the scintillator assigned material of PLASCINT to
something default, such as PMMA, and modifying the
OPT-PROD/OPT-PROP cards to the proper wavelengths, the optical
photons appear in the USRBIN.<br>
<br>
So the issue either lies how the material was defined or a bug in
Fluka when it attempts to assign optical properties to a material
number. <br>
<br>
Hope that helps.<br>
<br>
Nicholas Bolibruch<br>
<p class="MsoNormal"><span style=""><a moz-do-not-send="true"
href="http://www.lightsource.ca/">Canadian Light Source Inc.</a></span></p>
<p class="MsoNormal"><span style="">Instrumentation Analyst</span></p>
<p class="MsoNormal"><span style="">Controls & Instrumentation
Development</span></p>
<p class="MsoNormal"><span style="">+1 306 657 3643</span></p>
<br>
<br>
<div class="gmail_quote">On Mon, Dec 3, 2012 at 10:03 AM,
Francesca Fiorini <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:francesca.fiorini_at_oncology.ox.ac.uk"
target="_blank">francesca.fiorini_at_oncology.ox.ac.uk</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Fluka
users,<br>
<br>
I am trying to simulate the production of scintillation
photons from a BC400 scintillator immerse in water and
irradiated by a proton beam. Since this is my first
simulation with optical photons I (more or less) followed the
example in section 12.2.4 of the manual, but apparently
something is missing or wrong in my input, because there is no
light production or at least I cannot detect any optical
photon from usrbin or any other scoring card. Could anyone
help? The input file is attached.<br>
<br>
Many thanks<br>
Francesca<br>
<br>
P.S.: So far I kept the Cherenkov light generation off, but
once the simulation works I am going to activate that too.<br>
<br>
Dr Francesca Fiorini<br>
Gray Institute for Radiation Oncology and Biology<br>
Old Road Campus Research Building<br>
Off Roosevelt Drive<br>
University of Oxford<br>
Oxford, OX3 7DQ<br>
UK<br>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
--<br>
Nicholas Bolibruch<br>
<br>
<br>
<br>
</blockquote>
<br>
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