A Linear Accelerator is an electrical device for the acceleration of subatomic particles. This sort of particle accelerator has many applications, from the generation of X-rays in a hospital environment, to an injector into a higher energy synchrotron at a dedicated experimental particle physics laboratory. The design of a linac depends on the type of particle that is being accelerated electron, proton or ion. Electro statically, the particles are accelerated by the electric field between two different fixed potentials, which include the Van de Graaf, Pelletron and Tandem accelerators. Induction, a pulsed voltage is applied around magnetic cores. The electric field produced by this voltage is used to accelerate the particles. Radio frequency, the electric field component of radio waves accelerates particles inside a partially closed conducting cavity acting as a RF cavity resonator and it include the travelling wave, Alvarezand Wideroe cavity type accelerators.