HIGH-CURRENT ION ACCELERATOR Russian patent published in 2011 - IPC H01J3/00 H05H7/22 

FIELD: physics.

SUBSTANCE: high-current ion accelerator, the spatial position of ions at the output of which depends on their charge, is used. Use of an accelerating high-frequency structure with large overall cross sectional area of the accelerating space, capable of directly capturing and accelerating a large number of ions from wide-angle non-congruent (with bad laminarity of current tubes) ion beams with virtually any charge to mass ratio, with small effect of increase in phase-space volume of beam during its acceleration. The high-current ion accelerator employs an ion laser source in which the emission angle of particles depends on their charge. A multi-aperture high-frequency acceleration system with poly-cylindrical coaxial resonators is used, where the said acceleration system is capable of capturing in acceleration mode the majority of ions in the wide-angle ion beams without using focusing lenses. In this acceleration system, the effect of factors leading to increase in the phase volume and divergence angle of the ion beam during its acceleration is minimised. Such factors as distortion of the accelerating field in acceleration intervals due to the factor of the shape of the acceleration gaps, the effect of spatial charge of the ion beam in the accelerating electric field and negative effects caused by collision of ions with different charges during their acceleration in one acceleration channel, by accelerating ions of different charge in separate acceleration channels and as a result of accelerating ion beams with bad congruence. Thus, as a result of the structural changes made, presence of multiple coaxial apertures of small diametre on the end planes of coaxial resonators, which form acceleration gaps and use of a laser ion source, spatial separation of ions with different charge states is achieved at the input in the acceleration coaxial resonators, as well as further acceleration of ions with the same type of charge in channels of the given resonators corresponding to their spatial position. This also allows input into such resonators all types of charged particles from wide-angle beams generated by sources of these particles, including electrons, without using focusing lenses.

EFFECT: high current of ions accelerated in the accelerator.

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