Re: [fluka-discuss]: collimated diverging point source

From: <arghyac_at_barc.gov.in>
Date: Wed, 9 Sep 2015 15:19:14 +0530

Thank you madam/Sir for your kind co-operation. Now the issue is solved.



> Hi
> sorry, but I cannot understand what do you mean with "expected result".
> Could you please explain what is exactly your problem?
> And, it is very difficult to comment on inut card without having them.
> Could you, please, send the inoput file? or at least the relevant parts of
> it?
> In the MULSOPT card, do not change the first three whats.
> Regards
> Paola
>> Dear Sir,
>>
>> I have done the same thing. But still then I am not getting the
>> expected result.
>>
>> actually, I want to score the dose due to mono-energetic electron beam
>> in Kev to few Mev range. For that I want to sample source same like
>> 'SOURCE NO. 1' in EGSnrc code (egs_inprz). It is said in the manual that
>> for simulating Kev range electron I have to put on the single scattering
>> mode.
>> In 'MULSOPT'card I have set Type:GLOBEMF,Min step:0.2,optimal:0.2,
>> SS:ON,#scattering:100, E<Moliere: on.Others options are kept at
>> default value. Is this setting is Correct or I have to change it?
>> I have set ECUT and PCUT as 1 Kev.
>> By doing these also, I am not getting expected result.
>>
>> So, if you kindly give some hints regarding the above setting and the
>> design of Source same like SOURCE NO.1 as EGSnrc(i.e. point source on
>> axis
>> incident from front) then it will be helpful to me.
>>
>> Thanking you in advance.
>>
>>
>>
>>
>>
>>
>>
>>
>>> Dear Arghya Chattaraj,
>>> if I understand correctly, your question
>>> you need a flat angular distribution over 10 cm at 20 cm from source
>>> This means a an angular interval = 2*atan(5/20)=0.48996 radians=489.96
>>> milliradians
>>> You'll have to set the third WHAT in the BEAM card to a positive value
>>> equal to 489.96
>>> Regards
>>> Paola
>>>> Dear Fluka experts,
>>>>
>>>> I want to design one collimated diverging point source in Fluka.
>>>> The
>>>> source specification is as below,
>>>>
>>>> The distance between point source and medium is 20cm. Beam is
>>>> circular and directed along positive Z-axis. Beam diameter at the
>>>> medium surface is 10 cm.
>>>>
>>>> I have designed this type of source using 'Beam Card' divergence
>>>> option.
>>>>
>>>> What is the correct procedure to calculate beam divergence in Fluka
>>>> and
>>>> how to design this type of source?
>>>>
>>>> I would like to get any kind of your advice regarding these two.
>>>>
>>>> Thanks in advance.
>>>>
>>>>
>>>> Arghya Chattaraj
>>>>
>>>>
>>>> __________________________________________________________________________
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>>>>
>>>
>>>
>>> Paola Sala
>>> INFN Milano
>>> tel. Milano +39-0250317374
>>> tel. CERN +41-227679148
>>>
>>> __________________________________________________________________________
>>> You can manage unsubscription from this mailing list at
>>> https://www.fluka.org/fluka.php?id=acc_info
>>>
>>>
>>
>>
>> Mr.Arghya Chattaraj
>> Scientific Officer C
>> CRP & NMS
>> RP & AD
>> BARC,Mumbai
>> Ph-022-25598654
>>
>> __________________________________________________________________________
>> You can manage unsubscription from this mailing list at
>> https://www.fluka.org/fluka.php?id=acc_info
>>
>
>
> Paola Sala
> INFN Milano
> tel. Milano +39-0250317374
> tel. CERN +41-227679148
>
> __________________________________________________________________________
> You can manage unsubscription from this mailing list at
> https://www.fluka.org/fluka.php?id=acc_info
>
>


Mr.Arghya Chattaraj
Scientific Officer C
CRP & NMS
RP & AD
BARC,Mumbai
Ph-022-25598654

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Received on Wed Sep 09 2015 - 13:30:11 CEST

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