公开(公告)号：US20240110655A1

公开(公告)日：2024-04-04

申请号：US18536136

申请日：2023-12-11

Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

Inventor： Jonathan MALTZ ,  Johannes STAHL

IPC: F16L51/00 ,  A61B6/00 ,  F16L51/02 ,  G01T1/185 ,  G05D16/20 ,  H01J47/02

CPC classification number: F16L51/00 ,  A61B6/44 ,  A61B6/54 ,  F16L51/02 ,  G01T1/185 ,  G05D16/2013 ,  G05D16/2066 ,  H01J47/02 ,  G01T1/02

Abstract: A system for equalizing a pressure in an ionization chamber of a radiation device is provided. The system may include the ionization chamber including: a chamber housing including one or more chamber walls; a chamber volume inside the chamber housing, the chamber volume being filled with a radiation sensitive material; and a pressure adjustment apparatus operably coupled to the chamber volume via at least one wall of the one or more chamber walls, the pressure adjustment apparatus being configured to equalize a first pressure of the radiation sensitive material inside the chamber volume and a second pressure of ambient air outside the chamber housing.

公开(公告)号：US11894223B2

公开(公告)日：2024-02-06

申请号：US18026368

申请日：2021-09-03

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tsuyoshi Kodama ,  Masaki Yamada ,  Shinichi Hara ,  Naoki Umebayashi

IPC: H01J47/02 ,  H01J40/04 ,  H01J40/06 ,  H01J40/16

CPC classification number: H01J47/02 ,  H01J40/04 ,  H01J40/06 ,  H01J40/16

Abstract: A photoelectric tube includes a housing including a light transmitting portion, an electron emitting portion held by a recess provided in the housing, the electron emitting portion including a concave photoelectric surface facing a light transmitting portion side inside the housing, and an electron capturing portion disposed between the light transmitting portion and the photoelectric surface inside the housing. At least a part of the electron capturing portion is located inside a region on an inside of the photoelectric surface.

公开(公告)号：US20180075937A1

公开(公告)日：2018-03-15

申请号：US15703521

申请日：2017-09-13

Applicant: Ian Christopher Hamilton ,  Nicolette Muldrow

Inventor： Ian Christopher Hamilton ,  Nicolette Muldrow

IPC: G21H1/08 ,  G01T1/16 ,  H01M8/0606 ,  H01J47/02

CPC classification number: G21H1/08 ,  G01T1/16 ,  G01T1/185 ,  H01J47/02 ,  H01M8/0606

Abstract: A method and device convert radiation energy to electrical energy using an ionizable medium, anode, and cathode.

公开(公告)号：US20170003403A1

公开(公告)日：2017-01-05

申请号：US15100006

申请日：2014-11-30

Applicant: ION BEAM APPLICATIONS S.A.

Inventor： David MENICHELLI ,  Friedrich FRIEDL

IPC: G01T1/29 ,  A61N5/10 ,  H01J47/02

CPC classification number: G01T1/2935 ,  A61N5/1075 ,  A61N2005/1087 ,  H01J47/02

Abstract: The present invention relates to a dosimetry device (10) for determining a spatial distribution of a quantity of radiation incident on the dosimetry device. The device comprises a segmented electrode assembly (12) comprising an electrically non-conducting substrate (13) having a plurality of electrode elements (14) provided thereon, surrounded by ground electrodes. The device further comprises an electrically conducting sheet (16) comprising a protrusion (17) arranged such as to define a plurality of ionization chamber cavities (18) between the segmented electrode assembly (12) and the electrically conducting sheet (16). The device also comprises a voltage applying means (28) for applying a voltage difference between the electrically conducting sheet (16) and the plurality of electrode elements (14) and a routing means (25) for routing a plurality of ionization currents corresponding to the plurality of electrode elements (14) to a processing means.

Abstract translation: 本发明涉及一种用于确定入射在剂量测定装置上的辐射量的空间分布的剂量测定装置（10）。 该装置包括分段电极组件（12），其包括具有设置在其上的由接地电极包围的多个电极元件（14）的非导电衬底（13）。 该装置还包括导电片（16），其包括突出部（17），所述突起（17）布置成在分割的电极组件（12）和导电片（16）之间限定多个电离室空腔（18）。 该装置还包括用于在导电片（16）和多个电极元件（14）之间施加电压差的电压施加装置（28）和用于布置对应于多个电极元件（14）的多个电离电流的布线装置（25） 多个电极元件（14）连接到处理装置。

公开(公告)号：US09224585B2

公开(公告)日：2015-12-29

申请号：US14063135

申请日：2013-10-25

Applicant: Mitsubishi Electric Corporation

Inventor： Hiroyuki Tsuda ,  Kenichi Moteki

IPC: H01J47/02 ,  H01R4/72 ,  H02G15/196

CPC classification number: H01J47/02 ,  H01R4/72 ,  H02G15/196

Abstract: In order to obtain a dose-rate measuring system that reduces an influence of an electromagnetic induction noise acting around an ionization chamber and a signal converter, a cabinet of the ionization chamber, shields of cables, a cabinet of the signal converter, and a cabinet of a measuring unit are connected in series, and a single-point ground is performed at the measuring unit, and other units except the grounded measuring unit are insulated from the earth, and moreover, a heatproof insulating material having water repellency is coated on a fixed portion of the ionization chamber, whereby the ionization chamber is electrically insulated from a chassis at a fixed side, and the heatproof insulating material having water repellency is coated on a connecting portion of a connector for connecting a cable to another cable, after a waterproof process is performed on the connecting portion by using a bonding tape.

Abstract translation: 为了获得减小影响离子化室和信号转换器的电磁感应噪声的影响的剂量率测量系统，电离室的机柜，电缆的屏蔽层，信号转换器的机柜和机柜 的测量单元串联连接，并且在测量单元处执行单点接地，并且除了接地的测量单元之外的其它单元与地绝缘，并且具有防水性的耐热绝缘材料涂覆在 电离室的固定部分，由此电离室在固定侧与底盘电绝缘，并且具有防水性的耐热绝缘材料涂覆在用于将电缆连接到另一电缆的连接器的连接部分上，在防水 通过使用粘合带在连接部分上进行处理。

公开(公告)号：US08970099B2

公开(公告)日：2015-03-03

申请号：US14049895

申请日：2013-10-09

Applicant: Institute of Nuclear Energy Research Atomic Energy Council, Executive Yuan

Inventor： Jeng-Hung Lee ,  Shi-Hwa Su ,  Tzeng-Te Huang ,  Bor-Jing Chang

IPC: H01J47/02 ,  H01J49/14

CPC classification number: H01J47/02 ,  G01T1/185 ,  H01J49/14

Abstract: The present disclosure relates to an ionization chamber with a built-in temperature sensor, which is especially adapted for devices, such as X-ray units, gamma irradiators and linear accelerators, whichever is used for performing radiation dose output measurement accordingly. In an embodiment, the ionization chamber comprises: a cavity, an inner electrode, a chamber wall, an outer electrode, a guard electrode and a calibrated temperature sensor for detecting real-time temperature inside the cavity of ionization chamber to be used in the correction process of radiation dose measurement signals. With the aforesaid device, not only the accuracy of measurement can be improved effectively, but also the time consumed in a radiation dose measurement period can be reduced greatly since it will no longer bear the disadvantage that the radiation dose measurement has to wait until the temperatures inside and outside the cavity of ionization chamber had reached a thermal equilibrium before the measurement.

Abstract translation: 本公开涉及具有内置温度传感器的电离室，其特别适用于诸如X射线单元，γ照射器和线性加速器的装置，以相应的方式执行辐射剂量输出测量。 在一个实施例中，电离室包括：空腔，内部电极，室壁，外部电极，保护电极和校准的温度传感器，用于检测用于校正的电离室的空腔内的实时温度 辐射剂量测量信号的过程。 利用上述装置，不仅可以有效地提高测量精度，而且可以大大降低辐射剂量测量周期中消耗的时间，因为它不再承担辐射剂量测量必须等到温度 电离室的内外腔在测量前达到热平衡。

公开(公告)号：US20140209810A1

公开(公告)日：2014-07-31

申请号：US13749739

申请日：2013-01-25

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Edward Joseph Baus ,  Kevin Scott McKinny

IPC: H01J47/02

CPC classification number: H01J47/02 ,  H01J47/002

Abstract: A radiation detection assembly that includes an ionization chamber having a cathode and an anode. The ionization chamber detects radiation that passes into the ionization chamber. The assembly includes an exterior enclosure defining a hollow internal volume within which the ionization chamber is enclosed. The exterior enclosure includes at least two layers. At least one of the layers provides an electromagnetic shield to the hollow internal volume and the ionization chamber enclosed therein.

Abstract translation: 一种辐射检测组件，其包括具有阴极和阳极的电离室。 电离室检测进入电离室的辐射。 该组件包括限定中空内部体积的外部外壳，电离室被封闭。 外壳包括至少两层。 这些层中的至少一个为中空的内部体积和包围在其中的电离室提供电磁屏蔽。

公开(公告)号：US20130334432A1

公开(公告)日：2013-12-19

申请号：US13966201

申请日：2013-08-13

Applicant: Mirion Technologies Inc.

Inventor： Jukka Kahilainen ,  Thomas Logan

IPC: G01T1/02 ,  H01L29/78

CPC classification number: G01T1/026 ,  G01T1/02 ,  G01T1/14 ,  G01T1/185 ,  G01T1/24 ,  G01T1/244 ,  G01T3/00 ,  G01T3/08 ,  G01T7/00 ,  H01J47/002 ,  H01J47/005 ,  H01J47/02 ,  H05K5/0278

Abstract: A direct ion storage (DIS) radiation detector or dosimeter has a design that is easy and low cost to manufacture using semiconductor processing techniques. The detectors include internal communications interfaces so they are easy to read. Different interfaces, including wired, e.g. USB ports, and wireless interfaces, may be used, so that the dosimeters may be read over the internet. The detectors can thus be deployed or used in a variety of detection systems and screening methods, including periodic or single time screening of people, objects, or containers at a location by means of affixed dosimeters; screening of objects, containers or people at a series of locations by means of affixed dosimeters, and surveillance of an area by monitoring moving dosimeters affixed to people or vehicles.

Abstract translation: 直接离子存储（DIS）辐射检测器或剂量计具有使用半导体处理技术制造成本容易且成本低的设计。 检测器包括内部通信接口，因此易于阅读。 不同的接口，包括有线，例如 可以使用USB端口和无线接口，使得可以通过互联网读取剂量计。 因此，检测器可以被部署或用于各种检测系统和筛选方法中，包括通过固定的剂量计定期或单次对人，物体或容器进行筛选; 通过固定剂量计对一系列地点的物体，集装箱或人员进行筛查，并通过监测贴在人员或车辆上的移动剂量计监视区域。

公开(公告)号：US08597490B2

公开(公告)日：2013-12-03

申请号：US12937755

申请日：2008-04-14

Applicant: Rui De Oliveira ,  Serge Duarte Pinto

Inventor： Rui De Oliveira ,  Serge Duarte Pinto

IPC: C25F3/00 ,  C25F3/02 ,  C25F3/04

CPC classification number: H01J47/02

Abstract: Methods for manufacturing a gas electron multiplier. One method comprises a step of preparing a blank sheet comprised of an insulating sheet with first and second metal layers on its surface, a first metal layer hole forming step in which the first metal layer is patterned by means of photolithography, such as to form holes through the first metal layer, an insulating sheet hole forming step, in which the holes formed in the first metal layer are extended through the insulating layer by etching from the first surface side only, and a second metal layer hole forming step, in which the holes are extended through the second metal layer. Alternatively, the second metal layer hole forming step is performed by electrochemical etching, such that the first metal layer remains unaffected during etching of the second metal layer. In another embodiment, in the second metal layer hole forming step, the first and second metal layers are etched from the outside, thereby reducing the initial thicknesses of the first and second metal layers and the second metal layer is simultaneously etched through the holes in the first metal layer and the insulating sheet, said etching being maintained until the holes extend through the second metal layer, wherein said initial average thickness of the first and second metal layers is between 6.5 μm and 25 μm, preferably between 7.5 μm and 12 μm.

Abstract translation: 制造气体电子倍增器的方法。 一种方法包括制备由其表面上具有第一和第二金属层的绝缘片组成的空白片的步骤，第一金属层孔形成步骤，其中第一金属层通过光刻法构图，以形成孔 通过第一金属层，绝缘片孔形成步骤，其中形成在第一金属层中的孔仅通过从第一表面侧的蚀刻而延伸穿过绝缘层，以及第二金属层孔形成步骤，其中 孔延伸穿过第二金属层。 或者，第二金属层孔形成步骤通过电化学蚀刻进行，使得第一金属层在蚀刻第二金属层期间保持不受影响。 在另一个实施例中，在第二金属层孔形成步骤中，从外部蚀刻第一金属层和第二金属层，从而减小第一和第二金属层的初始厚度，并且通过第二金属层中的孔同时蚀刻第二金属层 第一金属层和绝缘片，所述蚀刻保持直到孔延伸穿过第二金属层，其中第一和第二金属层的初始平均厚度在6.5μm和25μm之间，优选在7.5μm和12μm之间。

公开(公告)号：US08294088B2

公开(公告)日：2012-10-23

申请号：US12745265

申请日：2008-12-01

Applicant: Steven Derek Pringle

Inventor： Steven Derek Pringle

IPC: H01J49/02

CPC classification number: H01J49/025 ,  H01J47/02

Abstract: A mass spectrometer is disclosed comprising a Gas Electron Multiplier ion detector. The ion detector comprises three gas electron multiplier stages GEM1, GEM2, GEM3 wherein a counter electrode (12) is arranged adjacent the first electron multiplier stage GEM1.

Abstract translation: 公开了一种质谱仪，其包括气体电子倍增器离子检测器。 离子检测器包括三个气体电子倍增器级GEM1，GEM2，GEM3，其中相对电极（12）被布置为与第一电子倍增器级GEM1相邻。