Message: Re: strange phisics results Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

None Re: strange phisics results 

Forum: Physics List
Re: Question strange phisics results (Bruno Zerbo)
Re: None Re: strange phisics results (michel maire)
Date: 21 Feb, 2014
From: Bruno Zerbo <Bruno Zerbo>

Hi Michel.
Thanks for the reply. I now energy conservation but you have a continue
plot while mine is discontinue. I'll compare my code with testem5.
Regards, Bruno


2014-02-20 15:46 GMT+01:00 michel maire <michel.maire@lapp.in2p3.fr>:

>
> *** Discussion title: Physics List
>
> On Wed, 19 Feb 2014 16:45:50 GMT, Bruno Zerbo wrote:
>
> > Hi to all,
> > I'm doing some simulations to calculate the energy deposited by
> > electrons of different energy in a silicon layer 1 mm width.
> >
> > I developed the code starting from the ones in
> > examples/extended/electromagnetic/TestEm1
> > my detector construction make a world filled by vacuum in which there is
> > a layer of silicon.
> >
> > Electrons are shot with energy varying form 0.5 MeV to 5.5 MeV.
> > Before I send 1000000 of electrons of 0.5 MeV and I fill an histogram,
> > then I repeat with energy of 0.75 MeV and I fill another histogram...
> > and so on until 5.5 MeV.
> >
> > These histograms are very strange and something is not going right.
> >
> >
> > I attached some pictures of the histograms plotted. In each of these you
> > can see a straight line in coincidence with the energy of the electrons
> > shot to the silicon. I think that this behaviour is not physical and I
> > can't explain what is coming.
>
>  Energy conservation. If e- is totally absorbed, total energy deposit = E
> incident.
>
>  I reproduced your setup with TestEm5.
>  1MeV.jpeg is 2 e- incidents. 1 is transmitted, 1 is totally absorbed -->
> 1 MeV
>
>  Also, I attach macro and histo at 4 MeV. You can play with this TestEm5
> and compare with your results.
>
>    Attachment:
>
> http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2014/02/20/06.45-89321-1MeV.jpeg
>
> http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2014/02/20/06.45-27617-bruno.mac.txt
>
> http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2014/02/20/06.45-83593-4MeV.gif
>
> -------------------------------------------------------------
> Visit this GEANT4 at hypernews.slac.stanford.edu message (to reply or
> unsubscribe) at:
>
> http://hypernews.slac.stanford.edu/HyperNews/geant4/get/phys-list/802/3.html
>

 [ MIME part of type text/html without a name stripped ]

 Add Message Add Message
to: "Re: strange phisics results"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews


[ Geant 4 Home | Geant 4 HyperNews | Search | Request New Forum | Feedback ]