Patent ID: 9184040
Filing Date: 2015-11-10
Classification: H01J

Abstract:
1. An abridged multipole structure for the transport and selection of ions along an axis in a vacuum system, comprising: a plurality of rectilinear electrode structures, each having a substantially planar face with a first dimension and a second dimension perpendicular to the first dimension, a set of electrically conductive electrodes, an electrical divider network electrically connecting the electrodes of the set and a voltage applied to the extents of the rectilinear structure across the second dimension, wherein the electrodes and the electrical divider network are constructed so that voltages applied to the electrodes across the second dimension produce an electrical potential at the planar face whose amplitude is a linear function of position along the second dimension; and a source that applies an RF potential across the second dimension of each of the electrode structures to produce a multipole field to focus analyte ions toward the axis.