Ion traps with y-directional ion manipulation for mass spectrometry and related mass spectrometry systems and methods

A method of transporting ions between an ion source and an ion detector, the method comprising:

• providing an ion trap positioned between the ion source and the ion detector and comprising a ring electrode defining an ion trap aperture, wherein the ring electrode has a longitudinal length extending in a longitudinal direction between the ion source and the ion detector, and the ion trap aperture has a transverse length extending in a first direction orthogonal to the longitudinal direction and a transverse width extending in a second direction orthogonal to the longitudinal direction and the first direction;
• introducing ions into the ion trap aperture at a first location along the first direction;
• generating an electric field directed along the first direction within or proximate to the ion trap aperture to transport at least some of the ions to a second location along the first direction within the ion trap aperture;
• and
• ejecting at least some of the ions at the second location from the ion trap aperture,
• wherein the transverse length is larger than the longitudinal length and the transverse width.