公开(公告)号：US09797061B2

公开(公告)日：2017-10-24

申请号：US14928740

申请日：2015-10-30

Applicant: General Electric Company

Inventor： Arie Shahar ,  Eliezer Traub ,  Peter Rusian ,  Juan Carlos Rojo

IPC: C30B11/00 ,  C30B29/48

CPC classification number: C30B11/003 ,  C30B29/48 ,  Y10T117/1092

Abstract: A system for growing a crystal is provided that includes a crucible, a furnace, and a heat transfer device. The crucible has a first volume to receive therein a material for growing a crystal. The furnace has an ampoule configured to receive the crucible within the ampoule. The furnace is configured to produce a lateral thermal profile combined with a vertical thermal gradient. The heat transfer device is disposed under the crucible and configured to produce a leading edge of growth of the crystal at a bottom of the crucible. The heat transfer device includes at least one elongate member disposed beneath the crucible and extending along a length of the crucible.

公开(公告)号：US20170016998A1

公开(公告)日：2017-01-19

申请号：US15280640

申请日：2016-09-29

Applicant: General Electric Company

Inventor： Arie Shahar ,  Avishai Ofan ,  Jeffrey Michael Levy ,  Yaron Glazer

IPC: G01T1/24 ,  G01T1/161

CPC classification number: G01T1/241 ,  G01T1/161 ,  G01T1/24 ,  G01T1/247 ,  G01T1/2928

Abstract: A radiation detector system is provided including a semiconductor detector, plural pixelated anodes, and at least one processor. The plural pixelated anodes are disposed on a surface of the detector. At least one of the pixelated anodes is configured to generate a collected charge signal corresponding to a charge collected by the pixelated anode and to generate a non-collected charge signal corresponding to a charge collected by an adjacent anode to the pixelated anode. The at least one processor is configured to determine a collected value for the collected charge signal in the pixelated anode; determine a non-collected value for the non-collected charge signal in the pixelated anode corresponding to the charge collected by the adjacent anode; use the non-collected value for the non-collected charge signal to determine a sub-pixel location for the adjacent anode; and use the collected value to count a single event in the pixelated anode.

Abstract translation: 提供了包括半导体检测器，多个像素化阳极和至少一个处理器的辐射检测器系统。 多个像素化阳极设置在检测器的表面上。 像素化阳极中的至少一个被配置为产生对应于由像素化阳极收集的电荷的收集的电荷信号，并且产生对应于由相邻阳极收集到像素化阳极的电荷的非收集的电荷信号。 所述至少一个处理器被配置为确定所述像素化阳极中所收集的电荷信号的收集值; 确定对应于由相邻阳极收集的电荷的像素化阳极中未收集的电荷信号的非收集值; 使用非收集的值用于非收集的电荷信号以确定相邻阳极的子像素位置; 并使用收集的值来计算像素化阳极中的单个事件。

公开(公告)号：US20160126402A1

公开(公告)日：2016-05-05

申请号：US14526796

申请日：2014-10-29

Applicant: General Electric Company

Inventor： Arie Shahar ,  Yaron Glazer ,  Jeffrey Levy ,  Avishai Ofan ,  Rotem Har-Lavan

IPC: H01L31/08 ,  H01L31/18 ,  H01L31/0224 ,  G01T1/24 ,  H01L31/0296

CPC classification number: H01L31/085 ,  G01T1/24 ,  G01T1/249 ,  H01L31/022408 ,  H01L31/0296 ,  H01L31/02966 ,  H01L31/1828 ,  H01L31/1832 ,  H01L31/1864

Abstract: A radiation detector is provided including a cathode, an anode, and a semiconductor wafer. The semiconductor wafer has opposed first and second surfaces. The cathode is mounted to the first surface, and the anode is mounted to the second surface. The semiconductor wafer is configured to be biased by a voltage between the cathode and the anode to generate an electrical field in the semiconductor wafer and to generate electrical signals responsive to absorbed radiation. The electrical field has an intensity having at least one local maximum disposed proximate to a corresponding at least one of the first surface or second surface.

Abstract translation: 提供了包括阴极，阳极和半导体晶片的放射线检测器。 半导体晶片具有相对的第一和第二表面。 阴极安装到第一表面，并且阳极安装到第二表面。 半导体晶片被配置为由阴极和阳极之间的电压偏置，以在半导体晶片中产生电场并产生响应于吸收的辐射的电信号。 所述电场具有至少一个局部最大值的强度，其邻近于所述第一表面或所述第二表面中的至少一个。

公开(公告)号：US20150194459A1

公开(公告)日：2015-07-09

申请号：US14665453

申请日：2015-03-23

Applicant: General Electric Company

Inventor： Peter Rusian ,  Arie Shahar

IPC: H01L27/146 ,  H01L31/0296 ,  H01L31/08 ,  G01T1/24 ,  G01T1/161

CPC classification number: H01L27/14658 ,  G01T1/161 ,  G01T1/241 ,  H01L27/1462 ,  H01L27/14676 ,  H01L31/02966 ,  H01L31/085

Abstract: Radiation detectors and methods of fabricating radiation detectors are provided. One method includes mechanically polishing at least a first surface of a semiconductor wafer using a polishing sequence including a plurality of polishing steps. The method also includes growing a passivation oxide layer on a top of the polished first surface and depositing patterned metal contacts on a top of the passivation oxide layer. The method further includes applying a protecting layer on the patterned deposited metal contacts, etching a second surface of the semiconductor and applying a monolithic cathode electrode on the etched second surface of the semiconductor. The method additionally includes removing the protecting layer from the patterned metal contacts on the first surface, wherein the patterned metal contacts are formed from one of (i) reactive metals and (ii) stiff-rigid metals for producing inter-band energy-levels in the passivation oxide layer.

Abstract translation: 提供辐射探测器和制造辐射探测器的方法。 一种方法包括使用包括多个抛光步骤的抛光顺序机械抛光半导体晶片的至少第一表面。 该方法还包括在抛光的第一表面的顶部上生长钝化氧化物层，并在图案化的金属触点上沉积钝化氧化物层的顶部。 该方法还包括在图案化的沉积的金属触点上施加保护层，蚀刻半导体的第二表面并且在半导体的蚀刻的第二表面上施加单片阴极电极。 该方法另外包括从第一表面上的图案化金属触点移除保护层，其中图案化金属触点由（i）活性金属和（ii）硬刚性金属之一形成，用于产生带内能级 钝化氧化物层。

公开(公告)号：US20140084171A1

公开(公告)日：2014-03-27

申请号：US13624660

申请日：2012-09-21

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Arie Shahar ,  Eliezer Traub

IPC: G01T1/20 ,  G01T1/00

CPC classification number: G01T1/2985 ,  A61B6/032 ,  A61B6/037 ,  A61B6/4291 ,  A61B6/5205 ,  A61B6/542 ,  G01T1/1648

Abstract: Systems and methods for scanning with radiation detectors are provided. One system includes at least one radiation scanning camera-head, an array of at least one pixelated radiation detector having an imaging surface including a two dimensional array of pixels, and a scanning unit positioned between the radiation detector and the object. The scanning unit includes first and second radiation blocking plates having first and second two-dimensional arrays of openings, respectively, wherein the array of pixels and the first and second arrays of openings have a same pitch. Additionally, for each of a plurality of scan positions of the scanning unit, the first and second moveable plates and the imaging surface are positioned differently with respect to each other to produce different inclination angles in response to each scan position.

Abstract translation: 提供了使用辐射探测器进行扫描的系统和方法。 一个系统包括至少一个辐射扫描相机头，具有包括二维像素阵列的成像表面的至少一个像素化辐射检测器的阵列，以及位于辐射检测器和物体之间的扫描单元。 扫描单元包括分别具有第一和第二二维开口阵列的第一和第二辐射阻挡板，其中像素阵列和第一和第二开口阵列具有相同的间距。 此外，对于扫描单元的多个扫描位置中的每一个，第一和第二可移动板和成像表面相对于彼此不同地定位，以响应于每个扫描位置产生不同的倾斜角度。

公开(公告)号：US10247834B1

公开(公告)日：2019-04-02

申请号：US15998449

申请日：2018-08-15

Applicant: General Electric Company

Inventor： Arie Shahar ,  Yaron Glazer ,  Jean-Paul Bouhnik ,  Avishai Ofan ,  Moshe Cohen-Erner

IPC: H01L27/146 ,  G01T1/24 ,  G01T7/00

Abstract: A radiation detector assembly is provided that includes a semiconductor detector, a collimator, plural pixelated anodes, and at least one processor. The collimator has openings defining pixels. Each pixelated anode is configured to generate a primary signal responsive to reception of a photon and to generate at least one secondary signal responsive to reception of a photon by at least one surrounding anode. Each pixelated anode includes a first portion and a second portion located in different openings of the collimator. The at least one processor is operably coupled to the pixelated anodes, and configured to acquire a primary signal from one of the pixelated anodes; acquire at least one secondary signal from at least one neighboring pixelated anode; and determine a location for the reception of the photon using the primary signal and the at least one secondary signal.

公开(公告)号：US20190051773A1

公开(公告)日：2019-02-14

申请号：US16161601

申请日：2018-10-16

Applicant: General Electric Company

Inventor： Arie Shahar ,  Jean-Paul Bouhnik

IPC: H01L31/0224 ,  G01T1/24 ,  H01L31/0296 ,  H01L31/18

Abstract: A radiation detection system is provided. The radiation detection system includes a radiation detector. The radiation detector includes a semiconductor layer having a first surface and a second surface opposite the first surface, a monolithic cathode disposed on the first surface, and multiple pixelated anode strip-electrodes disposed on the second surface in a coplanar arrangement. The multiple pixelated anode strip-electrodes include a first set of pixelated anode strip-electrodes disposed along a first direction and a second set of pixelated anode strip-electrodes disposed along a second direction orthogonal to the first direction. Each pixelated anode strip-electrode of the first set of pixelated anode strip-electrodes includes a first respective multiple segments disposed along the first direction. Each pixelated anode strip-electrode of the second set of pixelated anode strip-electrodes includes a second respective multiple segments disposed along the second direction.

公开(公告)号：US10156646B1

公开(公告)日：2018-12-18

申请号：US15621501

申请日：2017-06-13

Applicant: General Electric Company

Inventor： Arie Shahar ,  Moshe Cohen-Erner

IPC: G01T1/36

Abstract: The systems and methods described herein measure a collected energy signal from a first pixel of a radiation pixelated detector during at least one event, and measure adjacent energy signals from at least two pixels adjacent to the first pixel of the radiation pixelated detector during the at least one event. The systems and methods generate a first spectrum based on the collected energy signal of the at least one event within an energy window. The energy window is a predetermined energy range for medical imaging. The systems and methods determine a delta charge based on the collected energy signal and the adjacent energy signals generated during the at least one event, generate a second spectrum based on the delta charge of the at least one event outside the energy window, and stretch the second spectrum to combine with the first spectrum to form a corrected energy spectrum.

公开(公告)号：US10156645B2

公开(公告)日：2018-12-18

申请号：US15389956

申请日：2016-12-23

Applicant: General Electric Company

Inventor： Arie Shahar ,  Jean-Paul Bouhnik

IPC: G01T1/24

Abstract: A radiation detector system is provided that includes a semiconductor detector, plural pixelated anodes, and a side anode. The semiconductor detector has a surface. The pixelated anodes are disposed on the surface, and are arranged in a grid defining a footprint. The side anode is disposed outside of the footprint defined by the plural pixelated anodes, and has a length extending along at least two of the pixelated anodes.

公开(公告)号：US10147826B2

公开(公告)日：2018-12-04

申请号：US15398033

申请日：2017-01-04

Applicant: General Electric Company

Inventor： Arie Shahar ,  Jean-Paul Bouhnik

IPC: G01J1/42 ,  H01L31/0224 ,  H01L31/18 ,  H01L31/0296 ,  G01T1/24

Abstract: A radiation detection system is provided. The radiation detection system includes a radiation detector. The radiation detector includes a semiconductor layer having a first surface and a second surface opposite the first surface, a monolithic cathode disposed on the first surface, and multiple pixelated anode strip-electrodes disposed on the second surface in a coplanar arrangement. The multiple pixelated anode strip-electrodes include a first set of pixelated anode strip-electrodes disposed along a first direction and a second set of pixelated anode strip-electrodes disposed along a second direction orthogonal to the first direction. Each pixelated anode strip-electrode of the first set of pixelated anode strip-electrodes includes a first respective multiple segments disposed along the first direction. Each pixelated anode strip-electrode of the second set of pixelated anode strip-electrodes includes a second respective multiple segments disposed along the second direction.