US 11,756,780 B2
Multipole assembly configurations for reduced capacitive coupling
Harald Oser, San Carlos, CA (US); and Raman Mathur, Mountain View, CA (US)
Assigned to Thermo Finnigan LLC, San Jose, CA (US)
Filed by Thermo Finnigan LLC, San Jose, CA (US)
Filed on Dec. 2, 2021, as Appl. No. 17/541,086.
Application 17/541,086 is a continuation of application No. 16/808,244, filed on Mar. 3, 2020, granted, now 11,201,044.
Prior Publication US 2022/0230862 A1, Jul. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01J 49/06 (2006.01); H01J 49/42 (2006.01)
CPC H01J 49/063 (2013.01) [H01J 49/065 (2013.01); H01J 49/4225 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A mass spectrometer comprising:
a first multipole assembly comprising a first plurality of electrodes arranged about an axis and configured to confine ions radially about the axis, and
a second multipole assembly adjacent to the first multipole assembly and comprising a second plurality of electrodes arranged about the axis and configured to confine the ions radially about the axis,
wherein an orientation of the first multipole assembly about the axis is rotationally offset relative to an orientation of the second multipole assembly about the axis such that an electrode included in the first plurality of electrodes overlaps with two electrodes included in the second plurality of electrodes, as viewed in a direction along the axis.