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The code library is aimed for the three-dimensional simulation of the electron cyclotron resonance (ECR) plasma and ion production in an ECR ion source. The particle-in-cell method allows studying the detailed characteristics of plasma, taking into account distribution functions of particles, real self and external fields, particle-particle interactions, and others.

Abstract. Generation of magnetic field in units of booster synchrotron for the NICA project is one of the most important conditions for getting the required parameters and qualitative accelerator operation. Research of linear and nonlinear dynamics of ion beam 197Au 31+ in the booster have carried out with MADX program. Analytical estimation of magnetic field errors tolerance and numerical computation of dynamic aperture of booster DFO-magnetic lattice are presented. Closed orbit distortion with random errors of magnetic fields and errors in layout of booster units was evaluated. Magnetic lattice of boosterThe main task of this article is to evaluate maximum orbit distortion and dynamic aperture according to requirements specification for booster magnetic measurements and to find out magnetic field errors tolerances. For start let's have a look on the booster lattice. Magnetic lattice of the booster consists of 4 quadrants. Each quadrant includes 6 DFOperiods, 5 periods contain 2 dipole sector magnets and 1 period contains rectilinear gap. The booster will accelerate

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