working principalCyclotron is a device to acceleratecharged particlesto very high speed. It employs an electric and magnetic field for the same purpose. The working of a cyclotron is based on the fact that the frequency of revolution ofcharged particleis not dependent on the energy

High frequency oscillator maintains moderate alternating potential difference between the dees. This potential difference establishes an electric field that reverse its direction periodically. Suppose a positive ion of moderate mass produced at the centre of the dees, finds D2at negative potential. It gets accelerated towards it. A uniform magnetic field, normal to the plane of the dees, makes it move in a circular track. Particle t races a semicircular track and returns back to the region between the dees. The moment it arrives in the region electric field reverses its direction and accelerate the charge towards. D1. This way charge keeps on getting accelerated until it is removed out of the dees.Centripetal force, neede d by the charged particle to move in circular track, is provided by the magnetic field.

Thus, frequency of revolut/ion is independent of the energy of the particle. Yes, there is an upper limit on the energy acquired by the charged particle. The charged part icle gains maximum speed when it moves in a path of radius equal to the radius of the dees