Abstract
Ion optics of a double focusing mass spectrometer is investigated. The design technique for a high performance instrument with a field arrangement of QQHQC (Quadrupole, Quadrupole, Homogeneous magnetic sector, Quadrupole, Cylindrical electric sector) is described. The process of the computer calculation how to reduce the second and the third order image aberrations is explained in detail. Several examples of mass spectrometers with excellent ion optical properties are shown. The whole list of computer program is given.
