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Sad "Segmentation fault: 11" after /run/beamOn # 

Forum: Run Management
Date: 30 Oct, 2018
From: Aashiesh <Aashiesh>

Dear all,

 I am trying to run a simulation to generate bremsstrahlung energy spectrum from a tungsten target bombarded with an electron beam. As suggested on a number of posts, I used TestEm5 example to build the application that I want. TestEm5 example runs perfectly on my system, but I am having some issues with my application.  

 My application gets built and compiled with no errors. When I run the executable the UI opens up with no problem. Then I initialize (/run/initialize). But, when I try to run the beamOn (/run/beamOn 1), I get a segmentation fault (Segmentation fault: 11). If I run "/run/beamOn 0" then I do not get this error. 

 I tried searching the forums for this error and could not find a solution. I couldn't find anything on this in the book for developers. I can really use some help to understand what is happening and solve the problem. 

 I use a mac. Geant4 version: geant4-10-04-patch02.

Thanks, A

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