[takeda]

On the last image on the last page there's image of some copper devices with a description:

> These strange copper devices help take electric energy and convert it into kinetic energy of particles.

Pardon my ignorance, but isn't that just a fancy way of saying that it is a motor or some kind of pump?

[jasmcole]

Those are radio frequency cavities which accelerate the protons. A standing electromagnetic wave is formed which oscillates at just the right frequency so that the bunches are always accelerated as they pass from one section to the next.

[stox]

Those are resonant cavities, the RF pushes the particles.