Dear Francesc
Thank you for the lecture materials. however I am still waiting for the
FLUKA training course invoice and and relevant information.
Regards
Witness
On 12 March 2018 at 11:59, Francesc Salvat-Pujol <
francesc.salvat.pujol_at_cern.ch> wrote:
> Dear Witness,
>
> Feel free to take a look at the scoring lecture
>
> https://indico.cern.ch/event/604018/contributions/2435691/a
> ttachments/1395454/2242757/08_Scoring_2017.pdf
>
> You can see previous course contents e.g. under
>
> https://indico.cern.ch/event/604018/timetable/#all
>
> Click on the paper clips in each block to see the corresponding PDFs.
>
> With kind regards,
>
> Cesc
>
>
>
>
> On Fri, Mar 09 2018, at 13:18 +0200, Witness Chirume wrote:
>
>>
>> hello,
>>
>> i hope i find you well, i am a fluka beginner, i found your lecture notes
>> on the link that you provided to be useful. may you please send me some
>> more basic tutorials for beginners. especially on scoring.
>>
>> Regards
>> Witness Chirume
>>
>> On 5 March 2018 at 13:08, Francesc Salvat-Pujol <
>> francesc.salvat.pujol_at_cern.ch> wrote:
>>
>> Dear Riya,
>>>
>>> I have not seen your input file, so I shall assume you have a beam of
>>> whichever particles impinging on a sphere in vacuum with no additional
>>> regions other than a surrounding blackhole and that you are indeed
>>> scoring fluence. I naively suspect your problem is the following.
>>>
>>> If you score fluence using USRBDX with one-way scoring vacuum->sphere,
>>> you are only scoring surface-crossing events on the first half of the
>>> spherical surface, as the other half corresponds to sphere->vacuum.
>>> Thus, you are a factor ~2 short if you want the fluence through the
>>> whole spherical surface.
>>>
>>> If you use USRTRACK, the fluence scoring is done by accumulating track
>>> lengths within the sphere (and dividing by the sphere volume in the end
>>> etc). Thus, here you pick up the whole passage through the sphere, not
>>> just the entrance as above, hence (probably) the observed discrepancy.
>>>
>>> Feel free to take a look e.g. at
>>> https://indico.cern.ch/event/604018/contributions/2435691/at
>>> tachments/1395454/2242757/08_Scoring_2017.pdf
>>>
>>> Cheers,
>>>
>>> Cesc
>>>
>>>
>>>
>>> On Mon, Mar 05 2018, at 14:22 +0530, riya dey wrote:
>>>
>>>
>>>> Dear Experts,
>>>>
>>>> If I put 4*pi*r^2 as area in USRBDX ( with one way scoring) and
>>>> 4/3*pi*r^3
>>>> as volume of the spherical detector in USRTRACK , then the result in
>>>> USRTRACK is appearing to be 2 times the value from USRBDX.
>>>>
>>>> Both the values should be the same theoretically. Why is this
>>>> discrepancy
>>>> happening ?
>>>>
>>>>
>>>>
>>>> With regards,
>>>>
>>>> Riya Dey
>>>>
>>>>
>>>>
>>>> From: riya dey [mailto:riyadey_at_barc.gov.in]
>>>> Sent: 05 March 2018 13:47
>>>> To: 'fluka-discuss_at_fluka.org' <fluka-discuss_at_fluka.org>
>>>> Subject: EXPRESSIONN OF AREA USED IN USRBDX CARD
>>>>
>>>>
>>>>
>>>> Dear FLUKA Experts,
>>>>
>>>>
>>>>
>>>> Suppose I want to calculate the fluence from vacuum to a spherical
>>>> target .
>>>> What should be the expression for area that has to be given in USRBDX
>>>> card
>>>> ?? Is it 4*pi*r^2 or pi*r^2 ??
>>>>
>>>>
>>>>
>>>> Note : Fluence is defined as dN/dA where dN the number of particles
>>>> incident
>>>> on a sphere of cross-sectional area dA. And the cross sectional area of
>>>> a
>>>> sphere is pi*r^2 .
>>>>
>>>>
>>>>
>>>> With regards,
>>>>
>>>> Riya Dey
>>>>
>>>>
>>>> --
>>> Francesc Salvat Pujol
>>> CERN-EN/STI
>>> CH-1211 Geneva 23
>>> Switzerland
>>> Tel: +41 22 76 64011
>>> Fax: +41 22 76 69474
>>>
>>> ____________________________________________________________
>>> ______________
>>> You can manage unsubscription from this mailing list at
>>> https://www.fluka.org/fluka.php?id=acc_info
>>>
>>>
>>>
> --
> Francesc Salvat Pujol
> CERN-EN/STI
> CH-1211 Geneva 23
> Switzerland
> Tel: +41 22 76 64011
> Fax: +41 22 76 69474
>
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Received on Mon Mar 12 2018 - 14:59:04 CET