US 11,990,330 B2
Ion centrifuge ion separation apparatus and mass spectrometer system
Michael W. Senko, Sunnyvale, CA (US)
Assigned to Thermo Finnigan LLC, San Jose, CA (US)
Filed by THERMO FINNIGAN LLC, San Jose, CA (US)
Filed on Dec. 1, 2021, as Appl. No. 17/539,851.
Claims priority of provisional application 63/129,025, filed on Dec. 22, 2020.
Prior Publication US 2022/0199392 A1, Jun. 23, 2022
Int. Cl. H01J 49/42 (2006.01)
CPC H01J 49/426 (2013.01) [H01J 49/4215 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An ion separation apparatus comprising:
a first and a second ion carpet, each ion carpet comprising:
a substrate having a first face and a second face; and
a set of electrodes disposed on or beneath the first face, wherein a configuration of a first plurality of the set of electrodes defines at least one group of circle sectors;
an ion exit aperture passing through one of the ion carpets; and
one or more power supplies configured to provide oscillatory radio frequency (RF) voltages to at least a first subset of the electrodes of each ion carpet, to provide non-oscillatory direct current (DC) electrical potential differences across electrodes of at least the first subset of the electrodes of each ion carpet, and to provide time-varying DC voltages to the first plurality of the set of electrodes of each ion carpet that migrate through the sectors in the form of a traveling wave,
wherein the first and second ion carpets are disposed parallel to one another with a gap therebetween, wherein the first faces face one another across the gap.