|Message: Re: Non-symetrical distribution of randomly generated particles||Not Logged In (login)|
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With the help of Gabriele Cosmo, I figure out to solve this strange issue. Several causes are possible:
- If the installation is multi-threaded, the use of G4RandFlat::shoot() instead of CLHEP signature should be privileged.
- On a 64 bits machine RanecuEngine is not recommended as it works in lower precision. You may want to use Ranlux64Engine or MTwistEngine instead.
- It is a good practice to instantiate engine with a seed. I choose to use the system time. Many threads talk about the way to set the seed. This one help me to understand a bit more what happens with the random generator engine http://hypernews.slac.stanford.edu/HyperNews/geant4/get/runmanage/310.html?inline=-1