A cyclotron is a type of particle accelerator that uses a magnetic field to propel charged particles, such as protons or ions, to high speeds. It consists of two D-shaped electrodes, known as 'dees', which are placed in a vacuum chamber. As particles are accelerated, they spiral outward, gaining energy with each pass through the electric field between the dees. Cyclotrons are widely used in various applications, including medical treatments like radiation therapy and in research facilities for producing radioisotopes. Their ability to generate high-energy particles makes them essential tools in both scientific research and practical applications in medicine.