US 11,705,320 B2
Multi-pass mass spectrometer
Anatoly Verenchikov, City of Bar (ME)
Assigned to Micromass UK Limited, Wilmslow (GB)
Filed by Micromass UK Limited, Wilmslow (GB)
Filed on Dec. 1, 2021, as Appl. No. 17/539,599.
Application 17/539,599 is a continuation of application No. 16/636,946, granted, now 11,211,238, previously published as PCT/GB2018/052103, filed on Jul. 26, 2018.
Claims priority of application No. 1712612 (GB), filed on Aug. 6, 2017; application No. 1712613 (GB), filed on Aug. 6, 2017; application No. 1712614 (GB), filed on Aug. 6, 2017; application No. 1712616 (GB), filed on Aug. 6, 2017; application No. 1712617 (GB), filed on Aug. 6, 2017; application No. 1712618 (GB), filed on Aug. 6, 2017; and application No. 1712619 (GB), filed on Aug. 6, 2017.
Prior Publication US 2022/0093384 A1, Mar. 24, 2022
Int. Cl. H01J 49/40 (2006.01); H01J 49/42 (2006.01)
CPC H01J 49/406 (2013.01) [H01J 49/403 (2013.01); H01J 49/4225 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A time-of-flight mass analyser comprising:
at least one ion mirror and/or sector for reflecting or turning ions in a first dimension (X-dimension);
an ion accelerator for pulsing ion packets into the ion mirror or sector;
an ion detector; and
focusing electrodes arranged and configured to control the motion of ions in a second dimension (Z-dimension) orthogonal to the first dimension so as to spatially focus each of the ion packets so that it is smaller, in the second dimension, at the detector than when pulsed out of the ion accelerator;
wherein the focusing electrodes are spaced apart from each other in the first dimension by a gap, wherein the gap is elongated in the second dimension and the longitudinal axis of the gap curves in a plane defined by the first and second dimensions (X-Z plane).