|Message: Re: pb using Magnetic field in vacuum. Track length depends on incident energy||Not Logged In (login)|
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> G4MagIntegratorStepper* Stepper = new G4ClassicalRK4(Equation, 4);
RK4 stands for Runge-Kutta forth-order. The 4 in the argument (Equation,4) stands for the number of variables that are to be integrated over. It must not be less than 8 although that is enforced by:
So, I'd expect that your simulation doesn't change whether you use (Equation,4), (Equation,8) or just (Equation) as argument in the constructor of G4ClassicalRK4.
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