Mass spectrometer

Abstract

An object of the present invention is to provide a mass spectrometer capable of easily attaching and detaching electrical wiring of an ion optical element even when another system unit or the like is placed on an upper part of the mass spectrometer. A mass spectrometer comprises: a chamber VC forming a vacuum chamber; an ion optical element MFP arranged in the chamber; and a power supply line for supplying power to the ion optical element from a power source arranged outside the chamber. An opening OP is formed in at least a portion of wall surfaces of the chamber, excluding upper and lower surfaces and a side lid VC1 is provided to cover the opening. A connecting position between the power supply line FT and a cable CA and a connecting position between the ion optical element (terminal MT) and the cable CA are set at positions that allow the cable CA to be removed from the opening with the ion optical element housed in the chamber.

Dependencies are inferred from the claim text.