|Message: How to vary the incident angle||Not Logged In (login)|
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I would like to modify the incident angle of my primary generator. Precisely, I want my particle has a 60°deg angle and cross my detector in its center.
1) With the ParticleGun, I tried this :
It gives me an incident angle of 45° and I don't know how to use this method by adding directly the angle in the G4ThreeVector. I mean I wish to have the possibility to just modify the angle and have the particle crossing the detector by its center. Do you have an idea ?
2) And with the GeneralParticleSource, I tried this :
/gps/particle geantino /gps/pos/type Surface /gps/pos/shape Sphere /gps/pos/centre 0. 0. 0. cm /gps/ang/type cos /gps/ang/mintheta 60 deg /gps/ang/maxtheta 60 deg /gps/ang/minphi 0 deg /gps/ang/maxphi 0 deg
Could you help me to understand both methods ?
Thank you in advance,