|Message: Re: TestEm4 detector orientation query?||Not Logged In (login)|
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Thanks alot. I got three another minor questions.
From PrimaryGeneratorAction.cc in TestEm4
correct me if I'm wrong, why is the momentum is set along x-direction.
(2) if I want to stimulate gamma rays emitted by a recoil from the z-direction into a cylinder with a hole (rmin is none zero), I should set the SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.)) right?
(thetha,phi) are of spherical system right?
> Your are ok, except that dz=5cm is the half length of the cylinder.
> In generatePrimary, the photon is shooted at position (0,0,0), > randomly in (tetha,phi).
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