- #1

- 864

- 17

HI,

Some things I want to confirm, somethings I need to be reminded of:

So what I remember is that Magnetostatics - stationary charges

Electrostatics - constant or slow moving charges

And that an accelerating charge makes a magnetic field, but you need a time varying field to move charges.

So for that 'Curl of B' Maxwell Equ I gather that the partial derivative cross product of B means it's moving.

So my question is, those outter Ohmic heating coils and cores in the tokamak picture I attached, they must be oscillating in current excitation, and thus oscillating flux direction in those cores mustent they? Because that circulating flux produces the J axial current flowing inside the toroid, does that mean that the particles in the toroid are swiching back and fourth? What would you do if you didn't want the axial current to go back and fourth, but instead keeps spinning in one direction?

Finally, is it correct to say: the outter heating coils and cores, they produce an axial current inside which produces a poloidal magnetic field. And the wound coils around the toroid produce an axial magnetic field which result in a helix magnetic filed inside the tokamak?

Cheers

Some things I want to confirm, somethings I need to be reminded of:

So what I remember is that Magnetostatics - stationary charges

Electrostatics - constant or slow moving charges

And that an accelerating charge makes a magnetic field, but you need a time varying field to move charges.

So for that 'Curl of B' Maxwell Equ I gather that the partial derivative cross product of B means it's moving.

So my question is, those outter Ohmic heating coils and cores in the tokamak picture I attached, they must be oscillating in current excitation, and thus oscillating flux direction in those cores mustent they? Because that circulating flux produces the J axial current flowing inside the toroid, does that mean that the particles in the toroid are swiching back and fourth? What would you do if you didn't want the axial current to go back and fourth, but instead keeps spinning in one direction?

**Is that second term 'mu*epsilon*partial derivative of E', in the maxwell equation zero? I only vaguely remember it was derived from Biot-Savart somehow with like the 'bag inside a capacitor' thing Maxwell put there to fix the equation. I don't really remember what it means.****How does the Tokamak heat at first? So plasma is conductive (hence the aformentioned J current), but how does it produce an axial current conduction before it heats up to be conductive plasma?**Finally, is it correct to say: the outter heating coils and cores, they produce an axial current inside which produces a poloidal magnetic field. And the wound coils around the toroid produce an axial magnetic field which result in a helix magnetic filed inside the tokamak?

Cheers