[Gate-users] HELP

[lamia el moudden]

hello david Boersma
thank you for your respond
 -- actually i wanna simulate the phase contrast in X-ray using a the
speckle based technique ,. to avoid to simulate the speckle ( wich is very
difficult ) i wanna  simulate the refracted beam after the speckle , so i
will have to generate a different beams with with different angles and
intensity .
--it s a gamma source , with a energy of 1-40KeV
i hope its much more clear now if it s not let me know so i can give u more
details .
Lamia

Le lun. 9 mars 2020 à 11:29, David Boersma <david.boersma at acmit.at> a
écrit :

> Hello Lamia el Moudden,
>
>
> Sorry for the late reply.
>
>
> I am having a hard time understanding your question, to be honest. So I
> need to start with asking you for some clarification of what you would like
> to achieve. Specifically:
>
>    - What do you mean with "paper of speckle"? When I googled for it I
>    found "speckle pattern" which apparently has to do with interference of
>    visible light (usually from lasers). That is not a topic that we normally
>    treat with Gate/Geant4, as far as I know. I guess you mean something
>    completely different. 😊
>    - It sounds like you are looking a way to simulate many beams, each
>    with a different direction and angular distribution. What kind of primary
>    particles are emitted by the source? Photons or other particles? (Electron,
>    protons?) What is the energy range (and distribution) for the primary
>    particles?
>
>
> If you can clarify this, then it might be easier for me (or anyone else on
> the mailing list) to give you some suggestions/ideas to help you to set up
> your simulation.
>
>
> HTH,
>
> David B.
> ------------------------------
> *Von:* Gate-users <gate-users-bounces at lists.opengatecollaboration.org> im
> Auftrag von lamia el moudden <lamiaelmoudden at gmail.com>
> *Gesendet:* Dienstag, 3. März 2020 11:09:45
> *An:* gate-users at lists.opengatecollaboration.org
> *Betreff:* [Gate-users] HELP
>
> Hello everyone ,
> i am trying to find a way to simulate a paper of  speckle  with Gate but
> since it s very complicated geometry i am trying  to simulate the source
> after the interaction with the speckle ( that i won t simulate) since the
> source will be refracted i need to find a source wich will provide a
> angular distribution and each beam has his one deviation !! with Gate we
> have the GPS that provide the angular distribution with theta and phi . is
> there any other parametre that i can play with in GPS or another generator
> ? and if i want to code it with Geant 4 how can i do it ?
> THANK U
> _______________________________________________
> Gate-users mailing list
> Gate-users at lists.opengatecollaboration.org
> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opengatecollaboration.org/pipermail/gate-users/attachments/20200309/60f9d892/attachment-0001.html>