Mass spectrometry device and method for controlling same

Abstract

A mass spectrometry device can reduce a deviation in a mass axis due to the generation of heat from an AC voltage control circuit; and a method for controlling the mass spectrometry device. The mass spectrometry device has a quadrupole electrode, to which a controlled AC voltage is applied, and uses the quadrupole electrode as a mass filter. Before measurement, the mass spectrometry device applies an AC voltage of a prescribed amplitude Vto the multipole electrode for a prescribed time T, and a heating value Jthat is generated when the AC voltage of the prescribed amplitude Vis applied to the multipole electrode for the prescribed time Tis equivalent to a heating value that is generated when the AC voltage of the amplitude that is applied during the measurement is applied until a thermally steady state is reached (see FIG.A).