RE: Fluka for cylinderial source

From: Paola Sala <>
Date: Sun, 19 Aug 2012 10:17:42 +0200 (CEST)

Dear Zafar Yasin
if you need to model a source that is not monoenergetic, and you know what
is the enegy spectrum of your source,you have to write your own SOURCE
routine. You can find documentation in the manual, in the "user written
routines" chapter". There is also an example posted on the Discuss list:
> Dear Fluka users and experts,
> I came to know that fluka can be used to model a cylinderical source
> (thanks to Paola) by using two BEAMPOS cards. But the cylinderical source
> I am
> trying to mdoel are not a monoenergetic neutron source but the neutrons
> emitted
> from the source have different energy (like in a reactor and there is a
> shield around it). I am not able to find from the manual of fluka how can
> I compensate the different energy goupsof neutrons in the BEAMPOS cards
> or
> I am not sure either I can user the fluka for the shielding of a reactor.
> Any help will be appreciated.
> Thank you in advance,
> Best regards,
> Zafar Yasin
> ________________________________________
> From: [] on
> behalf of Paola Sala []
> Sent: 13 August 2012 14:14
> To: Zafar Yasin
> Cc:
> Subject: Re: Fluka for cylinderial source
> Dear Zafar Yasin,
> you can define a cylindrical source using two BEAMPOS cards,
> - one BEAMPOS card is used to define the center of your source
> - another BEAMPOS card ,*** with the SDUm equal to CYLI-VOL **** is used
> to define the dimensions of the source
> Please refer to the manual for the details
> Ciao
> Paola
>> Dear fluka experts and users,
>> I hope you all have an interesting time. I am a new to fluka and want to
>> shield the radiations emitted from a cylinderical source. As, I have
>> used
>> fluka for a
>> beam impenging on a Cu, etc targets. But I am to find if instead of beam
>> the neutrons
>> are being emitted from a cylinderical source. Some people are using MCNP
>> for the
>> cylinderical source but I did not want to use MCNP as I love fluka.
>> Thank you in advance,
>> Best regards,
>> Zafar yasin
>> Sr. Scientist
>> PINSTECH, P.O. Nilore
>> Islamabad, Pakistan=3D
> Paola Sala
> INFN Milano
> tel. Milano +39-0250317374
> tel. CERN +41-227679148

Paola Sala
INFN Milano
tel. Milano +39-0250317374
tel. CERN +41-227679148
Received on Sun Aug 19 2012 - 17:29:47 CEST

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