Some specific features of SIMION 7 3D simulation software application to computation of quadrupole mass analyzer analytical characteristics

The general principles of quadrupole mass analyzer modeling using the ion optics simulation software SIMION 7 3D were analyzed. A model of quadrupole mass analyzer with circular electrodes was developed. The shape of the mass peak was calculated. The influence of the mass analyzer operating mode and length on transmission was investigated. The data obtained were compared with analytical theory and data of numerical calculations. Good agreement was observed.