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On Thu, 08 Sep 2016 10:59:45 GMT, liyong wrote:
> Dear Dr. Maire, > > Thank you very much for your comment and I am sorry that I didn't reply > your answer in time. > > You are right that there is no difference of the energy deposition > profile of elelctron in the two different solid geometries, but the > neutron flux, generated by primary protons,is not the same. I add the > detail description in the attachment file. Please find it and have a > look. >
Sorry for the delay; I was off these days. I have not yet tried to reproduce your results. I did another test. From your plots, it seems that the number of neutrons created is smaller in the layered geometry than in a single volume. To check this point, I used a 'hadronic' version of TestEm11, not yet public. I have plot the z position of neutrons when they are created, e.g. their z-vertex. I attach the macros and the plot of comparison. As you can see, the spatial distribution of vertices are similar in the 2 geometries, and therefore the total number of neutrons created too ( ~ 46700 entrees)
Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/09/18/03.30-58136-liyong1.mac.txt http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/09/18/03.30-71015-liyong4.mac.txt http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/09/18/03.30-51896-z-vertex.gif