US 12,014,915 B2
Ion traps with y-directional ion manipulation for mass spectrometry and related mass spectrometry systems and methods
John Michael Ramsey, Chapel Hill, NC (US); Andrew Hampton, Auburn, AL (US); and Kevin Schultze, Chapel Hill, NC (US)
Assigned to The University of North Carolina at Chapel Hill, Chapel Hill, NC (US)
Filed by The University of North Carolina at Chapel Hill, Chapel Hill, NC (US)
Filed on Mar. 1, 2021, as Appl. No. 17/188,215.
Application 17/188,215 is a continuation of application No. 16/363,219, filed on Mar. 25, 2019, granted, now 10,937,640.
Application 16/363,219 is a continuation of application No. 15/692,306, filed on Aug. 31, 2017, granted, now 10,242,857, issued on Mar. 26, 2019.
Prior Publication US 2021/0343519 A1, Nov. 4, 2021
Int. Cl. H01J 49/06 (2006.01); H01J 49/00 (2006.01); H01J 49/02 (2006.01); H01J 49/42 (2006.01)
CPC H01J 49/065 (2013.01) [H01J 49/0027 (2013.01); H01J 49/022 (2013.01); H01J 49/424 (2013.01)] 34 Claims
OG exemplary drawing
 
1. A mass spectrometry system, comprising:
an ion source;
an ion detector;
an ion trap comprising:
a trapping electrode comprising an aperture; and
first and second end cap electrodes positioned on opposite sides of the trapping electrode to form a trapping cavity that extends in a longitudinal direction between the ion source and the ion detector, and in a transverse plane orthogonal to the longitudinal direction, wherein the first and second end cap electrodes are planar electrodes;
an electrode assembly comprising:
a first set of one or more supplemental electrodes positioned in a first plane within the trapping cavity that is displaced in the longitudinal direction from the trapping electrode; and
a second set of one or more supplemental electrodes positioned in a second plane within the trapping cavity that is displaced in the longitudinal direction from the trapping electrode; and
a controller connected to the first and second sets of supplemental electrodes,
wherein during operation of the system, the controller is configured to apply electrical potentials to the first and second sets of supplemental electrodes; and
wherein the first and second sets of supplemental electrodes are arranged to generate electric field gradients within the trapping cavity that displace a population of trapped ions from a first trapping location in the transverse plane to a second trapping location in the transverse plane.