Systems and methods for ion injection into an electrostatic trap

Abstract

Systems and methods are disclosed for ion injection into an electrostatic trap. As non-limiting examples, various aspects of this disclosure provide a quadrupole comprising first, second, and third quadrupole segments. The second quadrupole segment may be arranged between the first and third quadrupole segments and the first quadrupole segment and the third quadrupole segment may each comprise four poles with auxiliary electrodes arranged between each pair of the four poles. The second quadrupole segment may comprise four poles and the first and third quadrupoles each may comprise four individual auxiliary electrodes, two pairs of auxiliary electrodes, two electrodes, or one pair of auxiliary electrodes. The auxiliary electrodes of the first quadrupole segment and the entrance lens may be biased at a same direct current (DC) voltage. The auxiliary electrodes of the third quadrupole segment and the exit lens may be biased at a same DC voltage.

Dependencies are inferred from the claim text.