Date: Fri, 21 Jun 2024 12:58:18 +0300
Hi, Paola!
Thank you very much for your help!
With this change in the comscw.f file indeed I can get a spectrum
(please, find the attached figure). I get the same results even the
default comscw.f file. Probably the problem is that I don't understand
completely the picture. Is this the deposited energy just from the alpha
particles? This spectrum is not quite what we get from the
alpha-spectrometer. I think that my interpretation on how I should
simulate the experiment is wrong.
Best regards,
Angel
On 2024-06-19 19:33, Paola Sala wrote:
> Hi Angel
> apologies again for the previous answer.
> The reason why nothing is scored in DETECT is that the condition should
> be on
> JTRACK
> not on JSCRNG.
> Jscrng identifies the detector, jtrack identifies the particle type
>
> Hope this helps Paola
>
> On 6/10/24 12:14, angeld wrote:
>
>> Hi Mario,
>>
>> I have added the USERWEIG card in the .inp file and modified the
>> comscw.f file (please, find the .inp and .f files attached). But
>> unfortunately I am not doing something right or I am still missing
>> something since nothing is scored with the DETECT card.
>>
>> Best regards,
>> Angel
>>
>> On 2024-06-07 07:36, Santana, Mario wrote:
>>> Hi Angel,
>>>
>>> Here are some insights. Hopefully, they are helpful.
>>>
>>> * DETECT will score the energy deposition from all particles,
>>> including all the secondaries. Yes, you can filter by particle, by
>>> customizing the user routine “comscw.f” (in ./usermvax) and adding
>>> the USERWEIG card to your input file.
>>> Within the routine, the condition ISCRNG.eq.8 will apply to DETECT,
>>> and then you can JSCRNG.eq.-6 to alphas,
>>>
>>> e.g.:
>>>
>>> IF (ISCRNG.eq.8) THEN
>>>
>>> COMSCW = ZERZER
>>>
>>> IF (JSCRNG.eq.-6) COMSCW = ONEONE
>>>
>>> END IF
>>>
>>> * I think it is OK, like the movement of charges etc. cannot be
>>> accounted for per my knowledge. Of course, make sure your
>>> semiconductor is made of Si, not Ge or any compound.
>>>
>>> * It looks OK at a first glance.
>>>
>>> -M
>>>
>>> FROM: owner-fluka-discuss_at_mi.infn.it <owner-fluka-discuss_at_mi.infn.it>
>>> on behalf of angeld <angeld_at_inrne.bas.bg>
>>> DATE: Thursday, June 6, 2024 at 11:37 AM
>>> TO: fluka-discuss_at_fluka.org <fluka-discuss_at_fluka.org>
>>> SUBJECT: [fluka-discuss]: silicon detector of alpha particles
>>>
>>> Dear FLUKA users and experts,
>>>
>>> We are trying to simulate the energy deposition of alpha particles in
>>> Si
>>> (please see 241Am.inp attached) and obtain the energy spectrum of the
>>> alpha particles. As we don't complete comprehend the results I have
>>> several questions:
>>>
>>> 1. Does the DETECT card score the energy deposition of all particles
>>> (alphas, gammas, electrons, etc.) in the given region? Can we score
>>> just
>>> the alphas?
>>> 2. Should we do something to account for the semiconductor nature of
>>> the
>>> Si or the way it is defined is fine?
>>> 3. Should we add more cards with physical process or threshold
>>> energies?
>>>
>>> Best regards,
>>> Angel
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>>
>
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(image/png attachment: spectrum.png__size_40409)