A cyclotron is a type of particle accelerator. Cyclotrons accelerate charged particles using a high-frequency, alternating voltage (potential difference). A perpendicular magnetic field causes the particles to spiral almost in a circle so that they re-encounter the accelerating voltage many times. Ernest Lawrence, of the University of California, Berkeley, is credited with the invention of the cyclotron in 1929. He used it in experiments that required particles with energy of up to 1 MeV. How… (More on Cyclotron)