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Forum: Fields: Magnetic and Otherwise
Re: None pb using Magnetic field in vacuum. Track length depends on incident energy (sauvestre)
Re: Idea Re: pb using Magnetic field in vacuum. Track length depends on incident energy (sauvestre)
Re: Question Re: pb using Magnetic field in vacuum. Track length depends on incident energy (sauvestre)
Date: 26 Feb, 2016
From: Gumplinger Peter <Gumplinger Peter>

> 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:

http://www-geant4.kek.jp/lxr/source/geometry/magneticfield/src/G4ClassicalRK4.cc#L42

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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1 Ok: Re: pb using Magnetic field in vacuum. Track length depends on incident energy   (sauvestre - 26 Feb, 2016)
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