US 11,107,668 B2 · Mass spectrometer

Abstract

Four rod electrodes (50a to 50d) for separating ions according to a mass-to-charge ratio are held by a rod holder (51). The rod holder (51) is placed on a metal holder sustaining stand (52) provided on a bottom surface of a vacuum housing (1), and is fixed while being pressed by a fixation band (53) fixed to the holder sustaining stand (52) with screws (56). A heat release layer (55) made from heat dissipation silicone or the like is inserted between the fixation band (53) and the rod holder (51) and between the fixation band (53) and the holder sustaining stand (52). Therefore, heat generated in the rod holder (51) due to dielectric loss is not only directly transmitted to the holder sustaining stand (52), but also efficiently transmitted to the holder sustaining stand (52) through the fixation band (53).

Claims10

Dependent claims

A mass spectrometer including an ion optical element including a plurality of rod electrodes arranged around a linear axis, the ion optical element being configured to separate ions derived from a sample component introduced into a space surrounded by the plurality of rod electrodes according to a mass-to-charge ratio using an electric field formed by a voltage including a radio frequency voltage to be applied to the rod electrodes, the mass spectrometer comprising:

a) a boundary member configured to define a region in which the ion optical element is arranged;
b) a rod holder made from an insulating material and configured to hold the plurality of rod electrodes;
c) a fixation member configured to fix the rod holder to the boundary member;
and
d) a heat release promoting member inserted into at least part of a contact surface between the fixation member and the rod holder.

2 more elements

Dependencies are inferred from the claim text.

Mass spectrometer

Life of this patent

Mass spectrometer

Life of this patent

Abstract

Claims10