Magilin D. Immersion probe-forming system of nuclear microprobe

Combined probe-forming system consist of acceleration tube and magnetic quadrupole lenses multiplet or superconducting solenoid. Theoretical research. At first time optimization of optic elements location for maximum current are made. Using of acceleration tube with nonuniform field distribution propose. It make possible change optimal position without resolution decreasing. The theoretical model that describes the nonlinear dynamics of a charged particles beam in the probe-forming systems based on the electrostatic accelerator structure with axial-symmetry, magnetic quadrupole lenses, superconducting solenoid has been developed. Optimization of pole tips of precision magnetic quadrupole lens to get minimal quadrupole symmetry distortions and high value of gradient in the region of beam passing has been done.