Question

State the limitations of Cyclotron???

Answer 1

Only when the speed of the circulating ion is less than 'c' the speed of light, we find the frequency of revolution to be independent of its speed.
At higher speeds, the mass of the ion will increase and this changes the time period of the ion revolution. This results in the ion lagging behind the electric field and it eventually loses by collisions against the walls of the dees.
The cyclotron is suitable for accelerating heavy charged particles but not electrons.
Cyclotrons cannot accelerate in charged particles.
It is not suited for very high kinetic energy.