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Subject: Re: Problem with MATERIAL card
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--------------------------------------------------
From: "Nikolaos Charitonides" <charitonick_at_math.ntua.gr>
Sent: Friday, November 13, 2009 10:49 PM
To: "Angelo Infantino" <angeloinfa_at_hotmail.com>
Cc: "Fluka discussion" <fluka-discuss_at_fluka.org>
Subject: Re: Problem with MATERIAL card

> Hello Angelo,
>
> On 13/11/2009 6:39 =CE=BC=CE=BC, Angelo Infantino wrote:
>> Hi to all,
>> I'm trying to simulate the production of Cu-64 by irradiation of a Ni=20
>> target with proton (16.5 MeV).
>> Unfortunatly i have some problem with the material card:
>> 1) I have created a card material that i have called AIR and after i
>> have created a card compound in order to define the composition of the=
=20
>> air: the problem is that in card compound (in the name field) doesn't=20
>> appear the AIR. this is really strange beacuse in other flair files i=20
>> haven't this problem!
>>
> In the input file that you have attached us, the name of the material you=
=20
> are defining is "ARIA", and not "AIR". Maybe this is your problem ?=20
> Because normally, when you define a MATERIAL card, (without of course=20
> stating the Atomic weight, as you correctly have done) then flair should=
=20
> normally recognize that you are going to define a compound, and "make it=
=20
> appear" on the name list, as you say.
> In the input file you have attached us, I can see that there is no name o=
f=20
> the compound you are defining...without that defined, FLUKA won't run.

Yes, you are right. This is a second input that i have made and i have
called AIR->ARIA, but the real problem is not the name that i gave it but
the fact that this name not appear in the compound e assigmat cards (this i=
s
the motivation because you don't see the name ARIA in the compund card)..

>> 2) In the simulations when the AIR has been defined without problem, i=
=20
>> try to re-define the Nickel with another card material in order to=20
>> specify the isotope 64. I have filled all the WHAT but at the end of run=
=20
>> in the .out file there was this error:
>> Abort called from FLRM64 reason NO RANDOM FILE Run stopped!
>> STOP NO RANDOM FILE
>> Why???? because if i assign at the same region the NICKEL inside fluka i=
=20
>> haven't this problem
>>
> I would suspect that the problem is the name you have given to the=20
> material. Try giving something like "MYNICKEL" (not more that 8=20
> characters) and try if this works. But I am not sure, and because I am ou=
t=20
> of office I couldn't actually check it. But I will do asap if this is not=
=20
> the case....

I gave the name Ni to my defined Nickel for not have the problem of a name
too long. I don't belive that is this the problem, but i will try
with"MYNICKEL or somethings like that.
Sometimes i have this problem when i define a compund: for example i usuall=
y
use a compound with Co, Cr and Ni. I define Co and Cr with material cards
and after i define the compund.
If i don't active the LOW-MAT card for the Cr, FLUKA give me the message of
NO RANDOM FILE error.... but i don't understand why!

>> My last question is: i have read in the manual that is possible to defin=
e=20
>> the isotopic composition of a material by the use of MATERIAL and=20
>> COMPUOND card, but how?
>> I attach the input file in order to allow you to understand my problems.
>
> Yes, this is possible and easy. You firstly define the Materials with=20
> "MATERIAL" cards, (if of course they are not pre-defined fluka ones - see=
=20
> them in the manual) and afterwards, you "bind" these cards into a compoun=
d=20
> card, defining the composition either by atom or by mass percentage. Note=
=20
> that also compounds can be bounded together with the same way.
>
> I would suggest to have a look at the examples, that there are at the=20
> manual, they are really enlightening :-)
>
> All the best,
> Nikos

Thank you for your help.
Angelo=20
Received on Sun Nov 15 2009 - 23:38:43 CET