Dear Karolina,
your USRYIELD does not work because, instead of asking for scoring at the
boundary between your CONVERT and SCORING regions, you asked for photons
generated in inelastic nuclear reactions (EMERGING), which of course are
none.
Moreover, note that it makes no sense to select a material in USRYIELD
(last field), unless you score as a function of LET.
Note also that the Flair will plot the photon angular distribution (that
will turn out to be different from zero, once you have corrected the
mistake) as a function of the polar angle *in rad* (the option deg you
selected, has to be intended for input values only, the output ones are
given anyway in rad).
Best
Francesco
**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. ++41 22 7678962
fax ++41 22 7668854
On Fri, 29 Jul 2016, Karolina Kokurewicz wrote:
>
> Dear Francesco,
>
> I tried to follow your instruction but it doesn’t work.
> Please see the attached input file.
>
> Thank you
> Karolina
>
>
> ________________________________________
> From: Francesco Cerutti [Francesco.Cerutti_at_cern.ch]
> Sent: 27 July 2016 18:29
> To: Karolina Kokurewicz
> Cc: FLUKA discussion
> Subject: RE: [fluka-discuss]: angular dependence of gamma-rays
>
> Dear Karolina,
>
> if you get a null distribution, this means that you have no statistics
> (run many more primaries) or(/and) that your setup/input has some major
> issues.
> Use USRYIELD and select lab polar angle as first differential quantity and
> kinetic energy as second (filtering) differential quantity (taking a wide
> scoring gamma energy interval not to filter them out), ask - as it should
> always be done with USRYIELD! - for double differential *yield*
> (d2N/dx1dx2).
> In case, send your input
>
> Kind regards
>
> Francesco
>
> **************************************************
> Francesco Cerutti
> CERN-EN/STI
> CH-1211 Geneva 23
> Switzerland
> tel. ++41 22 7678962
> fax ++41 22 7668854
>
> On Wed, 27 Jul 2016, Karolina Kokurewicz wrote:
>
>> Dear Francesco,
>>
>> I'm trying to get the number of particles versus the polar angle. I tried to use USRYIELD and USRBDX as you suggested but I'm getting a flat distribution with all values equal zero or energy distribution. On the manual or presentations I didn't find suitable example. How do I get angular distribution?
>>
>> Thank you,
>> Karolina
>>
>>
>> ________________________________________
>> From: Francesco Cerutti [Francesco.Cerutti_at_cern.ch]
>> Sent: 27 July 2016 11:22
>> To: Karolina Kokurewicz
>> Cc: FLUKA discussion
>> Subject: Re: [fluka-discuss]: angular dependence of gamma-rays
>>
>> Hallo Karolina,
>>
>> USRBDX and USRYIELD look like pretty suitable options to your purpose
>>
>> Cheers
>>
>> Francesco
>>
>> **************************************************
>> Francesco Cerutti
>> CERN-EN/STI
>> CH-1211 Geneva 23
>> Switzerland
>> tel. ++41 22 7678962
>> fax ++41 22 7668854
>>
>> On Mon, 25 Jul 2016, Karolina Kokurewicz wrote:
>>
>>>
>>> Dear Fluka experts,
>>>
>>> Iʼm trying to score gamma-rays produced by bremsstrahlung of a 130 MeV electron beam on a tantalum converter.
>>> Is there a way to score the angular dependence of the gamma-rays? Because I didnʼt find a way so far.
>>>
>>> Best regards,
>>> Karolina
>>>
>>> __________________________________________________________________________
>>> You can manage unsubscription from this mailing list at https://www.fluka.org/fluka.php?id¬c_info
>>>
>>>
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Received on Fri Jul 29 2016 - 22:20:50 CEST