Patent ID: 9704698
Date: 2017-07-11
CPC Classifications: H01J

Claim:
1. An ion guide system, comprising: an ion guide having pole rods; and a device for a lateral introduction of ions into, or extraction from, the ion guide, the pole rods and the device being configured and positioned such that RF fields with at least a two-fold rotational symmetry around an axis of the ion guide are generated; wherein the ion guide has the form of a quadrupole rod set whose four pole rods are split and interrupted by gaps, with four insulated electrodes inserted into the gaps, the insulated electrodes being supplied with an RF voltage that is in antiphase to an RF voltage of the pole rods concerned, thus forming an RF hexapole field between each pair of these insulated electrodes; and wherein at least one of the RF hexapole fields is used as a lateral injection or extraction channel for ions.