Dear Eleni, if you are interested only in the outgoing neutrons you better
be using a boundary crossing scoring USRBDX or USRYIELD. Refer to the
manual or the Beginner Course lecture for the explanation of those cards.
Best, Vittorio
On Wed, Jul 15, 2015 at 10:19 PM, Eleni Adamidi <eleni.adamidi_at_cern.ch>
wrote:
> Dear V.,
>
>
>
> Thank you very much for your reply.
>
> I agree that in general it is not always straightforward to compare
> results from different codes.
>
> I will try to use in this case NEU-BALA.
>
>
>
> Best regards,
>
> Eleni
> ------------------------------
> *From:* Vittorio Boccone [dr.vittorio.boccone_at_ieee.org]
> *Sent:* 15 July 2015 22:48
> *To:* Eleni Adamidi
> *Cc:* fluka-discuss_at_fluka.org
> *Subject:* Re: [fluka-discuss]: calculate neutron yield_spallation
>
> Dear Eleni,
> you seem to to use and USRBIN scoring NEUTRON (or better NEUTRON
> fluence).
>
> First NEUTRON generalized particle type will not give directly the
> quantity as it does not include neutrons generated below 20 MeV, i.e.
> (n,2n) or (n,3n) reactions, second the USRBIN is not really doing that type
> of job. An option - without writing and linking your routine - is to use
> the NEU-BALA which gives you the sum of all neutrons.
>
> The problem is that you must use the same type of estimator/scoring
> quantity and technique in both codes. And this is not always
> straightforward.
>
> V.
>
> On Wed, Jul 15, 2015 at 11:03 AM, Eleni Adamidi <eleni.adamidi_at_cern.ch>
> wrote:
>
>> Hello,
>>
>> I am interested in calculating how many neutrons are generated in
>> inelastic interactions per beam particle when a proton beam of 960 MeV hits
>> a Pb target of 61cm diameter and 10,2height.
>>
>> The result I get is :
>> 1.0596E+01 (63.9%) 0.0000E+00 ( 0.0%) NEUTRON
>> so the neutron yield is 10.596, but compared with the same simulation in
>> MCNPX (neutron yield = 17.910) there is a big deviation.
>>
>> I am attaching my input file in case you could check if there is
>> something wrong.
>>
>> Thank you very much in advance,
>> Eleni Adamidi
>>
>>
>
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Received on Thu Jul 16 2015 - 01:52:46 CEST