|Message: Re: question about more than one primary particles||Not Logged In (login)|
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User Meiling Yu wrote:
>> Hi, I want to simulate a light source which emits optical photons with >> different momentum, but the primary particle generator seems can only >> generate particles with the same momentum.
Of course, not. In examples/extended/electromagnetic/TestEm4 you have a random distribution of the incident direction, but you can change the energy or the vertex position as well.
The difficulty with optical photon is that the polarisation of the initial photon must be defined. In novice/N06/src/PrimaryGeneratorAction, the function SetOptPhotonPolar() can be an example of what to do.
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