|Message: Re: A question concerning the event biasing||Not Logged In (login)|
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I presume that your phase space is binned: dx, dy, dpx, dpy, dpz and that N can be interpreted as some normalized strength. But even if you want to simulate the exact number of N particles for each entry, you'll probably want to simulate not all N particles coming from the edge of your phase space bins. Instead, you'll probably want to sample them randomly between x_i to x_i+1, px_i to px_i+1 etc. So, I'd suggest you loop over N in your PrimaryGeneratorAction with particleGun->SetNumberOfParticles(1), sample within the bin randomly, before moving on to the next file entry.
You can also loop over r*N_i with r>1 if you need more statistics.
Just my two cents.