|Message: Re: strange phisics results||Not Logged In (login)|
Click on the Forum title, e.g. on the "Forums by Category" page, to read a sequence of postings to the Forum and its threads all in one page. If you are only interested in one thread or the thread following a specific posting, click the thread or the posting, which takes you to a smaller page, which contains only the part you are interested in and may be easier to navigate.
Messages are "chained" if there are only replies at the first level, i.e. 1/1.html, 1/1/1.html etc. In case of "chained" messages the message number is replaced by the icon and there is no indentation.
Inline: Display the subject line only or also the text of the posting(s); for the choice "All" the "Outline" choices are switched off.
|1||0||1||no text / full text of posting|
|2||1||All||text for level 1 only / text for All postings|
Outline: Choose the depth of the posting thread, successive toggle controls provide increasing detail.
|1||2||1||2 levels / 1 level (original posting)|
|2||3||2||3 levels / 2 levels|
|3||3||All||3 levels / all levels (all postings)|
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 <firstname.lastname@example.org>: > > *** 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 ]