Effective code for numerical simulation of the helical relativistic electron beams

The method to calculate the beam space charge electric field, based on the integral equations method and introduction of three additional meshs is developed. Method diminishs the calculation time essentially. The new approach to the space charge limited current regime simulation is presented. The current density distribution j(R) is calculated directly from the zero condition for the normal component of the electric field on the emitter. It leads as well to the reducing of the j(R) as beam properties calculation errors.