公开(公告)号：US20200211832A1

公开(公告)日：2020-07-02

申请号：US16717791

申请日：2019-12-17

Applicant: Agilent Technologies, Inc.

Inventor： Robert M. Roberts ,  James L. Bertsch

IPC: H01J49/06 ,  H01J49/26

Abstract: An ion optic assembly includes a set of conductive rods, a first insulator, and a second insulator. The rods are inserted into through-holes of the first insulator, which are arranged about an axis along which the rods are elongated. The rods are then inserted through a bore of the second insulator and become located in notches of the bore, which are arranged about the axis. Accordingly, the first insulator positions one end of the rods at a first distance from the axis, and the second insulator positions the other end of the rods at a second distance from the axis, which may equal to or different from the first distance. The rods contact, and may be spring-biased against, the notches. The assembly may include an electrical contact with fingers spring-biased into contact with the rods. Each insulator may include both through-holes and notches for additional rods.

公开(公告)号：US10147595B2

公开(公告)日：2018-12-04

申请号：US15789505

申请日：2017-10-20

Applicant: Agilent Technologies, Inc.

Inventor： Robert M. Roberts ,  James L. Bertsch

IPC: H01J49/42 ,  H01J49/06

Abstract: A quadrupole rod assembly includes a plurality of electrically conductive rods, electrically insulating rings coaxially surrounding the rods, and clamping systems. The rods are arranged about a longitudinal axis. The rods and rings have respective surfaces oriented in a transverse plane orthogonal to the longitudinal axis, which surfaces interface with respective surfaces of the clamping systems that are also oriented in the transverse plane.

公开(公告)号：US09449804B2

公开(公告)日：2016-09-20

申请号：US14538382

申请日：2014-11-11

Applicant: Agilent Technologies, Inc.

Inventor： James L. Bertsch ,  Kenneth R. Newton ,  Layne Howard

IPC: H01J49/26 ,  H01J49/06

CPC classification number: H01J49/063 ,  H01J49/068

Abstract: An ion guide generates a first RF field of Nth order where N is an integer equal to or greater than 2, and a second RF field of 2Nth order superimposed on the first RF field. The first and second RF fields may be generated by respective first and second sets of electrodes. Another ion guide may include a converging entrance section followed by an exit section. The converging section may have a hyperbolic profile. A hyperbolic profile may be presented by electrodes having a twisted configuration relative to an ion guide axis.

Abstract translation: 离子导向器产生N等于或大于2的整数的N阶的第一RF场，以及叠加在第一RF场上的第2N次的第二RF场。 第一和第二RF场可以由相应的第一和第二组电极产生。 另一个离子导向器可以包括会聚进口部分，随后是出口部分。 收敛部分可以具有双曲线轮廓。 双曲线轮廓可以由具有相对于离子导向轴线的扭曲构造的电极呈现。

公开(公告)号：US20160133452A1

公开(公告)日：2016-05-12

申请号：US14538382

申请日：2014-11-11

Applicant: Agilent Technologies, Inc.

Inventor： James L. Bertsch ,  Kenneth R. Newton ,  Layne Howard

IPC: H01J49/06

CPC classification number: H01J49/063 ,  H01J49/068

Abstract: An ion guide generates a first RF field of Nth order where N is an integer equal to or greater than 2, and a second RF field of 2Nth order superimposed on the first RF field. The first and second RF fields may be generated by respective first and second sets of electrodes. Another ion guide may include a converging entrance section followed by an exit section. The converging section may have a hyperbolic profile. A hyperbolic profile may be presented by electrodes having a twisted configuration relative to an ion guide axis.

Abstract translation: 离子导向器产生N等于或大于2的整数的N阶的第一RF场，以及叠加在第一RF场上的第2N次的第二RF场。 第一和第二RF场可以由相应的第一和第二组电极产生。 另一个离子导向器可以包括会聚进口部分，随后是出口部分。 收敛部分可以具有双曲线轮廓。 双曲线轮廓可以由具有相对于离子导向轴线的扭曲构造的电极呈现。

公开(公告)号：US11480181B2

公开(公告)日：2022-10-25

申请号：US16922045

申请日：2020-07-07

Applicant: PFEIFFER VACUUM GMBH ,  AGILENT TECHNOLOGIES, INC.

Inventor： Tobias Stoll ,  Michael Schweighoefer ,  Jan Hoffmann ,  James L. Bertsch

IPC: F04D19/04 ,  F04D19/02

Abstract: The invention relates to a vacuum system, comprising a vacuum pump, preferably turbomolecular pump, and at least one vacuum chamber, wherein the vacuum pump comprises: at least a first and a second inlet and a common outlet; at least a first and a second pumping stage, each pumping stage comprising at least one rotor element being arranged on a common rotor shaft, wherein the first inlet is connected to an upstream end of the first pumping stage and the second inlet is connected to an upstream end of the second pumping stage; a direction element for preventing a gas flow from a downstream end of the first pumping stage to the second inlet; a conduit having a conduit inlet and a conduit outlet, wherein the conduit inlet is connected to the downstream end of the first pumping stage and the conduit outlet is connected to a location downstream of the second pumping stage; wherein the first inlet and the second inlet of the pump are connected to the same vacuum chamber.

公开(公告)号：US11152199B2

公开(公告)日：2021-10-19

申请号：US16717791

申请日：2019-12-17

Applicant: Agilent Technologies, Inc.

Inventor： Robert M. Roberts ,  James L. Bertsch

IPC: H01J49/00 ,  H01J49/06 ,  H01J49/26 ,  H01J49/10

Abstract: An ion optic assembly includes a set of conductive rods, a first insulator, and a second insulator. The rods are inserted into through-holes of the first insulator, which are arranged about an axis along which the rods are elongated. The rods are then inserted through a bore of the second insulator and become located in notches of the bore, which are arranged about the axis. Accordingly, the first insulator positions one end of the rods at a first distance from the axis, and the second insulator positions the other end of the rods at a second distance from the axis, which may equal to or different from the first distance. The rods contact, and may be spring-biased against, the notches. The assembly may include an electrical contact with fingers spring-biased into contact with the rods. Each insulator may include both through-holes and notches for additional rods.

公开(公告)号：US20180174818A1

公开(公告)日：2018-06-21

申请号：US15789505

申请日：2017-10-20

Applicant: Agilent Technologies, Inc.

Inventor： Robert M. Roberts ,  James L. Bertsch

IPC: H01J49/42 ,  H01J49/06

CPC classification number: H01J49/4215 ,  H01J49/063 ,  H01J49/4255

Abstract: A quadrupole rod assembly includes a plurality of electrically conductive rods, electrically insulating rings coaxially surrounding the rods, and clamping systems. The rods are arranged about a longitudinal axis. The rods and rings have respective surfaces oriented in a transverse plane orthogonal to the longitudinal axis, which surfaces interface with respective surfaces of the clamping systems that are also oriented in the transverse plane.

公开(公告)号：US09536723B1

公开(公告)日：2017-01-03

申请号：US14615889

申请日：2015-02-06

Applicant: Agilent Technologies, Inc.

Inventor： James L. Bertsch ,  Kenneth R. Newton

IPC: H01J49/42 ,  H01J49/00 ,  B01D59/44 ,  H01J49/06 ,  H01J49/26

CPC classification number: H01J49/063 ,  H01J3/18 ,  H01J49/067 ,  H01J49/26 ,  H01J49/4215

Abstract: A field terminator includes a plurality of electrode plates positioned around a guide axis at a radial distance therefrom. The plates generate a quadrupole DC field such that a polarity on each plate is opposite to a polarity on the plates adjacent thereto. The plates may be positioned at an axial end of a quadrupole ion guide such as a mass filter. In addition to an RF field, the ion guide may generate a quadrupole DC field. The DC field of the plates may be opposite in polarity to that of the ion guide.

Abstract translation: 场终止器包括多个电极板，定位在引导轴线的径向距离处。 板产生四极DC场，使得每个板上的极性与相邻的板上的极性相反。 板可以位于四极离子导向器的轴向端部，例如质量过滤器。 除了RF场之外，离子导向器可以产生四极DC场。 板的DC场可能与离子导向器的极性相反。

公开(公告)号：US08890086B1

公开(公告)日：2014-11-18

申请号：US13920405

申请日：2013-06-18

Applicant: Agilent Technologies, Inc.

Inventor： Noah Goldberg ,  James L. Bertsch ,  David Deford

IPC: H01J49/40 ,  G01T1/29

CPC classification number: H01J43/246 ,  G01T1/28 ,  H01J49/025

Abstract: An ion detection system for detecting ions whose velocity varies during an operating cycle. The ion detection system includes a dynode electron multiplier (e.g., a microchannel plate (MCP)) having a bias voltage input, and a bias voltage source to apply a bias voltage to the bias voltage input of the dynode electron multiplier. With a fixed bias voltage applied to its bias voltage input, the dynode electron multiplier has a gain dependent on the velocity of ions incident thereon. The bias voltage applied by the bias voltage source to the bias voltage input of the dynode electron multiplier varies during the operating cycle to reduce the dependence of the gain of the dynode electron multiplier on the velocity of the ions incident thereon.

Abstract translation: 一种离子检测系统，用于检测运行周期内速度变化的离子。 离子检测系统包括具有偏置电压输入的倍增电极倍增器（例如，微通道板（MCP））和偏置电压源，以将偏置电压施加到倍增电子倍增器的偏置电压输入端。 施加到其偏置电压输入端的固定偏置电压，倍增电子倍增器具有取决于入射在其上的离子的速度的增益。 偏置电压源施加到倍增电极倍增器的偏置电压输入端的偏置电压在操作周期内变化，以减小倍增电极倍增器的增益对入射到其上的离子的速度的依赖性。