In 1929 Ernest Lawrence came up with the much more compact cyclotron ... RF electric field of the cyclotron. This was compensated by varying the RF frequency and the machine and was dubbed ...

How does it work? UAB’s TR24 cyclotron moves protons at about 16 percent the speed of light, accelerating the protons outwards from the center of the machine along an expanding spiral path. A nuclear ...

Photo: Four-inch copper-encased cyclotron, one of Ernest Lawrence's ... volts to get the required acceleration, and making a machine to withstand that power was nearly impossible.