A METHOD FOR GENERATING ELECTRON BEAM BASED ON PHASE FOCUSING AND LINEAR ACCELERATOR

摘要

There is provided a linear accelerator capable of generating a high-quality electron beam without using an electromagnet by focusing the electron beam through the phase adjustment of the electron beam passing through the acceleration tube. The linear accelerator includes an electron gun for emitting an electron beam and an acceleration tube for accelerating and accelerating by an electron beam incident thereon. The acceleration tube includes at least one shifting cell for reducing the energy spread in the traveling direction of the electron beam and for diffusing the cross- And one or more de-bunching cells for increasing the energy spread in the traveling direction and focusing the cross-section of the electron beam, wherein the bunching cells and the de-bunching cells are arranged alternately. Therefore, it is possible to solve the problem that the medical electronic accelerator puts heavy load on the therapeutic robot arm or the gantry system due to its volume and weight.