公开(公告)号：US10741378B2

公开(公告)日：2020-08-11

申请号：US15559539

申请日：2016-03-22

Applicant: DH Technologies Development PTE Ltd.

Inventor： James W. Hager

IPC: H01J49/42 ,  H01J49/06 ,  H01J49/26

Abstract: Systems and methods described herein utilize a multipole ion guide that can receive ions from an ion source for transmission to downstream mass analyzers, while preventing unwanted/interfering/contaminating ions from being transmitted into the high-vacuum chambers of mass spectrometer systems. In various aspects, RF and/or DC signals can be provided to auxiliary electrodes interposed within a quadrupole rod set so as to control or manipulate the transmission of ions from the multipole ion guide.

公开(公告)号：US20220102135A1

公开(公告)日：2022-03-31

申请号：US17427216

申请日：2020-01-28

Applicant: DH TECHNOLOGIES DEVELOPMENT PTE. LTD.

Inventor： James W. Hager

IPC: H01J49/42 ,  H01J49/00

Abstract: Methods and systems for loading an ion trap are provided herein in which the total ion beam intensity and/or content of the ion beam are quickly interrogated so as to determine an optimum fill time for an ion trap. In various aspects, the methods and systems described herein are effective to prevent overfilling of the ion trap while decreasing the time associated with known techniques utilized to obtain a survey scan of the ion beam.

公开(公告)号：US20180096832A1

公开(公告)日：2018-04-05

申请号：US15559539

申请日：2016-03-22

Applicant: DH Technologies Development PTE Ltd.

Inventor： James W. Hager

IPC: H01J49/42 ,  H01J49/26 ,  H01J49/06

Abstract: Systems and methods described herein utilize a multipole ion guide that can receive ions from an ion source for transmission to downstream mass analyzers, while preventing unwanted/interfering/contaminating ions from being transmitted into the high-vacuum chambers of mass spectrometer systems. In various aspects, RF and/or DC signals can be provided to auxiliary electrodes interposed within a quadrupole rod set so as to control or manipulate the transmission of ions from the multipole ion guide.