Patent ID: 8148923

Claim:
Method for accelerating electrons in linear accelerator and an accelerating structure for carrying out of the said method, including successive electrons grouping and their acceleration in high-frequency electromagnetic field formed in accelerating units, where the following operations are performed: electrons supply directly from the source of low-energy electrons into accelerating units communicated via connection cells; where Ug is the optimal voltage electrons grouping using the first of accelerating units representing bunch resonator at the voltage U g on its gap selected from the formula: U g U 0 ≈ 7.36 π ⁡ ( 4 ⁢ n - 1 ) where U 0 is the voltage of electron source, n=1, 2, 3, . . . . where Lg is the distance between gap centers Where βo is the initial relative velocity of low energy electrons increasing of electrons energy in the second of accelerating units representing booster resonator, so that their relative velocity becomes β≧0.4+0.5; meantime, optimal grouping is provided as per the velocity of electron stream at the input of bunch resonator, and wavelength of high-frequency electromagnetic field is defined by selecting the distance L g between the centers of bunch resonator and booster resonator based on the following relation: L g β 0 = 4 ⁢ n - 1 2 ⁢ λ , ⁢ where ⁢ ⁢ β 0 = v 0 / c Where ν 0 is velocity of electron stream at the input into bunch resonator, c is light velocity, λ is microwave field wavelength in free space, n=1, 2, 3 . . . ; and increase of electron energy up to required values in the units following after the second accelerating unit; meantime, ensuring of optimal particles phase with respect to electromagnetic field in, at least, accelerating units, to which non-relativistic electrons enter with kinetic energy less than a rest energy equal to 0.511 MeV electron energies, by selecting the length L i length of accelerating segment of the accelerating structure, which is located between the centers of adjacent connection units and comprising the said accelerating structure, provided that the length of each following segment in accelerating structure located between the centers of adjacent connection units and comprising the said structure, relates to that in previous segment, as average electron velocity in the previous segment relates to that in the following segment.