Reply to post: Re: Didn't they used to have a flywheel?

Hotter than the Sun: JET – Earth’s biggest fusion reactor, in Culham

peteratjet

Re: Didn't they used to have a flywheel?

There are two flywheels, one to drive the Toroidal Coils that contain the plasma, one to drive the central solenoid that drives the plasma current (think of a tokamak as a giant sparkplug). It takes a couple of minutes to spin them up from 80rpm to the operating speed. However, there are also power amplifiers driving coils that control the plasma shape and position, and most of the energy going into the plasma while the actual science is happening comes from the additional heating systems, neutral particle beams and radio frequency heating, and these are all driven off the national grid.

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