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    QUADRUPOLE DEVICES
    2.
    发明申请
    QUADRUPOLE DEVICES 有权

    公开(公告)号：US20210082679A1

    公开(公告)日：2021-03-18

    申请号：US16970220

    申请日：2019-02-15

    Applicant: Micromass UK Limited

    Inventor： Martin Raymond Green ,  David Gordon ,  David Langridge

    IPC: H01J49/42 ,  H01J49/00

    Abstract: A method of operating a quadrupole device is disclosed. The method comprises applying a main drive voltage to the quadrupole device and applying three or more auxiliary drive voltages to the quadrupole device. The three or more auxiliary drive voltages correspond to two or more pairs of X-band or Y-band auxiliary drive voltages.

    Miniature ion source of fixed geometry
    3.
    发明授权
    Miniature ion source of fixed geometry 有权

    公开(公告)号：US10679840B2

    公开(公告)日：2020-06-09

    申请号：US16256687

    申请日：2019-01-24

    Applicant: Micromass UK Limited

    Inventor： Stevan Bajic ,  David Gordon ,  Daniel James Kenny ,  Richard Barrington Moulds ,  Stephen O'Brien ,  Ian Trivett ,  Kate Whyatt

    IPC: H01J49/16 ,  H01J49/00 ,  H01J49/04

    Abstract: A mass spectrometer is disclosed comprising an atmospheric pressure interface comprising a gas cone 6 having an inlet aperture, wherein the gas cone 6 has a first longitudinal axis arranged along an x-axis and an Electrospray ion source comprising a first capillary tube 2 having an outlet and having a second longitudinal axis and a second capillary tube 3 which surrounds the first capillary tube 2. The mass spectrometer further comprises a desolvation gas supply tube and a first device arranged and adapted to supply an analyte liquid via the first capillary tube 2 so that the liquid exits the outlet of the first capillary tube 2 at a flow rate >200 μL/min. The mass spectrometer further comprises a second device arranged and adapted to supply a nebuliser gas via the second capillary tube 3 at a flow rate in the range 80-150 L/hr, wherein an outlet of the first capillary tube 2 is arranged at a distance x mm along the x-axis as measured from the centre of the gas cone inlet aperture, a distance y mm along a y-axis as measured from the centre of the gas cone inlet aperture and a distance z mm along a z-axis as measured from the centre of the gas cone inlet aperture. The x-axis, the y-axis and the z-axis are mutually orthogonal. The desolvation gas supply tube surrounds the second capillary tube 3 and the mass spectrometer further comprises a third device arranged and adapted to supply a desolvation gas via the desolvation gas supply tube at a flow rate in the range 400-1200 L/hr, a heater 4 arranged and adapted to heat the desolvation gas to a temperature ≥100° C. and a fourth device arranged and adapted to supply a cone gas to the gas cone 6 at a flow rate in the range 40-80 L/hr and wherein x is in the range 2.0-5.0 mm and wherein the ratio z/x is in the range 1-5:1.

    Compact mass spectrometer
    6.
    发明授权
    Compact mass spectrometer 有权

    公开(公告)号：US10424473B2

    公开(公告)日：2019-09-24

    申请号：US16106774

    申请日：2018-08-21

    Applicant: Micromass UK Limited

    Inventor： David Gordon ,  Daniel James Kenny

    IPC: H01J49/00 ,  H01J49/24 ,  H01J49/06

    Abstract: A miniature mass spectrometer is disclosed comprising an atmospheric pressure ionization source, a first vacuum chamber having an atmospheric pressure sampling orifice or capillary, a second vacuum chamber located downstream of the first vacuum chamber and a third vacuum chamber located downstream of the second vacuum chamber. A first vacuum pump is arranged and adapted to pump the first vacuum chamber, wherein the first vacuum pump is arranged and adapted to maintain the first vacuum chamber at a pressure

    COMPACT MASS SPECTROMETER
    7.
    发明申请
    COMPACT MASS SPECTROMETER 审中-公开

    公开(公告)号：US20180358218A1

    公开(公告)日：2018-12-13

    申请号：US16106774

    申请日：2018-08-21

    Applicant: Micromass UK Limited

    Inventor： David Gordon ,  Daniel James Kenny

    IPC: H01J49/24 ,  H01J49/00 ,  H01J49/06

    CPC classification number: H01J49/24 ,  H01J49/0013 ,  H01J49/062

    Abstract: A miniature mass spectrometer is disclosed comprising an atmospheric pressure ionisation source, a first vacuum chamber having an atmospheric pressure sampling orifice or capillary, a second vacuum chamber located downstream of the first vacuum chamber and a third vacuum chamber located downstream of the second vacuum chamber. A first vacuum pump is arranged and adapted to pump the first vacuum chamber, wherein the first vacuum pump is arranged and adapted to maintain the first vacuum chamber at a pressure

    Compact mass spectrometer
    8.
    发明授权
    Compact mass spectrometer 有权

    公开(公告)号：US09852894B2

    公开(公告)日：2017-12-26

    申请号：US15388368

    申请日：2016-12-22

    Applicant: Micromass UK Limited

    Inventor： David Gordon ,  Daniel James Kenny

    IPC: H01J49/00 ,  H01J49/14 ,  H01J49/24

    CPC classification number: H01J49/0013 ,  H01J49/0031 ,  H01J49/062 ,  H01J49/10 ,  H01J49/145 ,  H01J49/24 ,  H01J49/40

    Abstract: A miniature mass spectrometer is disclosed comprising an atmospheric pressure ionization source and a first vacuum chamber having an atmospheric pressure sampling orifice or capillary, a second vacuum chamber located downstream of the first vacuum chamber and a third vacuum chamber located downstream of the second vacuum chamber. An ion detector is located in the third vacuum chamber. A first RF ion guide is located within the first vacuum chamber and a second RF ion guide is located within the second vacuum chamber. The ion path length from the atmospheric pressure sampling orifice or capillary to an ion detecting surface of the ion detector is ≦400 mm. The mass spectrometer further comprises a tandem quadrupole mass analyzer, a 3D ion trap mass analyzer, a 2D or linear ion trap mass analyzer, a Time of Flight mass analyzer, a quadrupole-Time of Flight mass analyzer or an electrostatic mass analyzer arranged in the third vacuum chamber. The product of the pressure P1 in the vicinity of the first RF ion guide and the length L1 of the first RF ion guide is in the range 10-100 mbar-cm and the product of the pressure P2 in the vicinity of the second RF ion guide and the length L2 of the second RF ion guide is in the range 0.05-0.3 mbar-cm.

    Compact mass spectrometer
    10.
    发明授权
    Compact mass spectrometer 有权
    紧凑型质谱仪

    公开(公告)号：US09530631B2

    公开(公告)日：2016-12-27

    申请号：US14892360

    申请日：2014-05-29

    Applicant: Micromass UK Limited

    Inventor： David Gordon ,  Daniel James Kenny

    IPC: H01J49/24 ,  H01J49/00 ,  H01J49/10 ,  H01J49/40 ,  H01J49/06

    CPC classification number: H01J49/0013 ,  H01J49/0031 ,  H01J49/062 ,  H01J49/10 ,  H01J49/145 ,  H01J49/24 ,  H01J49/40

    Abstract: A miniature mass spectrometer is disclosed comprising an atmospheric pressure ionisation source and a first vacuum chamber having an atmospheric pressure sampling orifice or capillary, a second vacuum chamber located downstream of the first vacuum chamber and a third vacuum chamber located downstream of the second vacuum chamber. An ion detector is located in the third vacuum chamber. A first RF ion guide is located within the first vacuum chamber and a second RF ion guide is located within the second vacuum chamber. The ion path length from the atmospheric pressure sampling orifice or capillary to an ion detecting surface of the ion detector is ≦400 mm. The mass spectrometer further comprises a tandem quadrupole mass analyser, a 3D ion trap mass analyser, a 2D or linear ion trap mass analyser, a Time of Flight mass analyser, a quadrupole-Time of Flight mass analyser or an electrostatic mass analyser arranged in the third vacuum chamber. The product of the pressure P1 in the vicinity of the first RF ion guide and the length L1 of the first RF ion guide is in the range 10-100 mbar-cm and the product of the pressure P2 in the vicinity of the second RF ion guide and the length L2 of the second RF ion guide is in the range 0.05-0.3 mbar-cm.

    Abstract translation: 公开了一种微型质谱仪，其包括大气压电离源和具有大气压采样孔或毛细管的第一真空室，位于第一真空室下游的第二真空室和位于第二真空室下游的第三真空室。 离子检测器位于第三真空室中。 第一RF离子引导件位于第一真空室内，第二RF离子导向器位于第二真空室内。 从大气压采样孔或毛细管到离子检测器的离子检测表面的离子路径长度≤400mm。 质谱仪还包括串联四极杆质谱仪，3D离子阱质谱仪，2D或线性离子阱质谱仪，飞行时间质量分析仪，四极杆飞行时间质量分析仪或静电质量分析仪 第三真空室。 第一RF离子导向器附近的压力P1与第一RF离子导向件的长度L1的乘积在10-100mbar-cm的范围内，第二RF离子附近的压力P2的乘积 引导件，第二RF离子导向件的长度L2在0.05-0.3毫巴-cm的范围内。

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