Re: setting cut off

Hamideh,

there are several errors in your geometry:

bodies "metal" and "vacguid" are not subtracted from "void", so there are
overlaps between regions "VAGUIDE", "METAL" and "VOID".
bodies "frontST" and "vacguid" are overlapping, so there in an overlap between
regions "VAGUIDE" and "FRST".

There may be more errors. Run the debugger to find out

Alberto

On Wed, 10 Aug 2011, Hamideh Jalali wrote:

> Dear Alberto
>
> It is the name of a region which its material is iron. Anyway the
> whole input is attached to clarify my problem.
>
> Best Regards
>
> On 8/10/11, Alberto Fasso' <fasso_at_mail.cern.ch> wrote:
>> Hamideh,
>>
>> one line of input is not sufficient: you should have sent the whole input
>> file.
>> Is METAL the name of a region or of a material?
>> If it is the name of a material, then be aware that the transport cutoff
> for
>> electrons and photons is set by region, not by material (by material is set
>> the
>> production cutoff, which is not relevant here).
>>
>> Alberto
>>
>> On Sun, 7 Aug 2011, Hamideh Jalali wrote:
>>
>>> Dear FLUKA Experts
>>>
>>> In my problem a 3 GeV electron beam strikes an air target and I'd like to
>>> score dose equivalent due to gas bremsstrahlung in tissue. I used
>>> gasbrem.inp (an example in fluka documentation) to set cut-offs for my
>>> problem. As the example I put iron of 0.01cm thickness in front of tissue
>>> and kill electron beam by setting high transport cut off 3.5 GeV for
>>> electron/positron.
>>>
>>> EMFCUT 3.5 1E-6 METAL
>>>
>>> but the result of USRBIN shows that beam particles penetrate tissue.
>>> Attached plot is the USRBIN result when beam particle is scored in tissue
>>> followed by iron(killing region).
>>> Please guide me where the problem is.
>>>
>>> Best Regards
>>> Hamideh
>

-- 
Alberto Fasso`
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