Electron capture into acceleration in a betatron with space-time varying magnetic field

It is shown that an additional pulse magnetic field, applied to the basic magnetic field of a betatron, leads to space-time variation of resulting magnetic field in the running clearance of accelerator. Mathematical model of electron capture into betatron acceleration in the presence of additional pulse magnetic field was developed. It is shown that space-time variation of magnetic field in the running clearance of accelerator during electron injection results to increase of efficiency of their capture into acceleration of not less than three times; the obtained experimental increase was equal to 2-2.5 times. The calculation technique enables to conduct systematically the simulation of electron capture into acceleration in order to obtain the best efficiency