US 12,230,489 B2
High pressure mass analyzer
James Hager, Missisauga (CA)
Assigned to DH TECHNOLOGIES DEVELOPMENT PTE. LTD., Singapore (SG)
Appl. No. 17/792,656
Filed by DH TECHNOLOGIES DEVELOPMENT PTE. LTD., Singapore (SG)
PCT Filed Jan. 14, 2021, PCT No. PCT/IB2021/050262
§ 371(c)(1), (2) Date Jul. 13, 2022,
PCT Pub. No. WO2021/144737, PCT Pub. Date Jul. 22, 2021.
Claims priority of provisional application 62/961,180, filed on Jan. 14, 2020.
Prior Publication US 2023/0027201 A1, Jan. 26, 2023
Int. Cl. H01J 49/00 (2006.01); H01J 49/06 (2006.01)
CPC H01J 49/004 (2013.01) [H01J 49/063 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A mass spectrometer, comprising:
a Fourier Transform (FT) mass analyzer having an input port for receiving ions and an exit port through which the ions exit the FT mass analyzer,
a detector disposed downstream of said FT analyzer for detecting ions exiting the FT analyzer, and
a multi-segment radiofrequency (RF) ion guide having a plurality of segments, said multi-segment ion guide being disposed upstream of said FT mass analyzer and having an input port for receiving ions and an output port through which ions exit the FT mass analyzer,
wherein said segments of the multi-segment ion guide are configured to be independently activated via application of a DC offset voltage thereto so as to adjust a length through which ions passing through the ion guide experience collisional cooling.