公开(公告)号：US20240285977A1

公开(公告)日：2024-08-29

申请号：US18658290

申请日：2024-05-08

Applicant: Varian Medical Systems, Inc.

Inventor： James CLAYTON

IPC: A61N5/10 ,  G21K1/093 ,  G21K1/10 ,  H01J35/08 ,  H01J35/10 ,  H01J35/14 ,  H01J35/22 ,  H01J35/30 ,  H05G2/00 ,  H05H9/04

CPC classification number: A61N5/1077 ,  A61N5/1043 ,  A61N5/1045 ,  A61N5/1047 ,  A61N5/1081 ,  G21K1/093 ,  G21K1/10 ,  H01J35/10 ,  H01J35/116 ,  H01J35/153 ,  H01J35/22 ,  H01J35/30 ,  H05G2/00 ,  H05H9/048 ,  A61N2005/1089

Abstract: A radiotherapy system includes an X-ray target configured to convert an incident electron beam into a therapeutic X-ray beam, a purging magnet configured to redirect unwanted particles emitted from the X-ray target away from the therapeutic X-ray beam, and a particle collector configured to absorb the unwanted particles subsequent to redirection by the purging magnet. The particle collector may be configured to dissipate at least 50% of the energy of the incident electron beam.

公开(公告)号：US20240274393A1

公开(公告)日：2024-08-15

申请号：US18568468

申请日：2022-02-14

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Naonobu SUZUKI ,  Astushi ISHII ,  Ryosuke YABUSHITA ,  Akimichi SHIMIZU ,  Naofumi KOSUGI ,  Ginji SUGIURA

IPC: H01J35/14 ,  H01J35/18

CPC classification number: H01J35/153 ,  H01J35/18

Abstract: An X-ray generation device includes: a housing; an electron gun including an electron-emitting unit that emits an electron inside the housing; a target that generates an X-ray upon an incidence of the electron inside the housing; a window member that seals an opening of the housing and that transmits the X-ray; a tube voltage application unit that applies a tube voltage between the electron-emitting unit and the target; and a magnetic field-forming unit for deflecting the electron by forming a magnetic field between the electron-emitting unit and the target. A thickness of the target has a distribution, and the target is disposed such that the electron is incident on a portion of the target which is relatively thinner in the thickness when the tube voltage is relatively low than when the tube voltage is relatively high.

公开(公告)号：US12027341B2

公开(公告)日：2024-07-02

申请号：US18074705

申请日：2022-12-05

Applicant: EMPYREAN MEDICAL SYSTEMS, INC.

Inventor： Kalman Fishman ,  Brian P. Wilfley ,  Christopher W. Ellenor ,  Donald Olgado ,  Chwen-Yuan Ku ,  Tobias Funk ,  Petre Vatahov ,  Christopher R. Mitchell

IPC: H01J35/14 ,  H01J35/16 ,  H01J35/30 ,  H01J35/32

CPC classification number: H01J35/153 ,  H01J35/16 ,  H01J35/30 ,  H01J35/32 ,  H01J2235/086 ,  H01J2235/166

Abstract: X-ray target element is comprised of a planar wafer. The planar wafer element includes a target layer and a substrate layer. The target layer is comprised of an element having a relatively high atomic number and the substrate layer is comprised of diamond. The substrate layer is configured to support the target layer and facilitate transfer of thermal energy away from the target layer.

公开(公告)号：US11963286B2

公开(公告)日：2024-04-16

申请号：US17725152

申请日：2022-04-20

Applicant: Excillum AB

Inventor： Björn Hansson ,  Per Takman ,  Yuli Wang ,  Shiho Tanaka

IPC: H05G2/00 ,  H01J35/08 ,  H01J35/14

CPC classification number: H05G2/006 ,  H01J35/08 ,  H01J35/14 ,  H01J35/153 ,  H01J2235/082

Abstract: An X-ray source including: a liquid target source configured to provide a liquid target moving along a flow axis; an electron source configured to provide an electron beam; and a liquid target shaper configured to shape the liquid target to include a non-circular cross section with respect to the flow axis, wherein the non-circular cross section has a first width along a first axis and a second width along a second axis, wherein the first width is shorter than the second width, and wherein the liquid target includes an impact portion being intersected by the first axis; wherein the x-ray source is configured to direct the electron beam towards the impact portion such that the electron beam interacts with the liquid target within the impact portion to generate X-ray radiation.

公开(公告)号：US20240055216A1

公开(公告)日：2024-02-15

申请号：US18268934

申请日：2021-12-21

Applicant: Helmut Fischer GmbH Institut fuer Elektronik und Messtechnik

Inventor： Martin Leibfritz

IPC: H01J35/14 ,  G01N23/223 ,  H01J35/08

CPC classification number: H01J35/153 ,  G01N23/223 ,  H01J35/08

Abstract: The invention relates to an x-ray source (100; 100a; 100b; 100c), comprising an electron source (110) for providing electrons (e) in the form of an electron beam (es) and a target element (120), on which the electrons (e) of the electron beam (es) of the electron source (110) are able to impinge, and at least one deflection device (140) enabling the electron beam (es) to be deflected from a propagation direction produced by the electron source (110), wherein the at least one deflection device (140) is configured to deflect the electron beam (es) at least intermittently with a trajectory (180) incident on the target element (120), but outside a center of the target element (120) or a region (150) of the target element (120) on which the electron beam (es) is incident in the case of a propagation direction without deflection, or wherein the at least one deflection device (140) is configured to deflect the electron beam (es) at least intermittently in such a way that the electron beam (es) is not incident on the target element (120).

公开(公告)号：US20230371163A1

公开(公告)日：2023-11-16

申请号：US18027943

申请日：2021-09-13

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： BERNHARD GLEICH

IPC: H05G1/58 ,  H01J35/14

CPC classification number: H05G1/58 ,  H01J35/153

Abstract: A mechanism for controlling an electron beam generator of an X-ray tube that switches between a low voltage mode and a high voltage mode. The proposed mechanism, during a transition between the low and high voltage modes, controls a power drawn by the electron beam generator. In particular, during a transition from a low voltage mode to a high voltage mode, the drawn power is reduced and, during a transition from a high voltage mode to a low voltage mode, the drawn power is increased.

公开(公告)号：US11742171B2

公开(公告)日：2023-08-29

申请号：US17625616

申请日：2020-07-02

Applicant: Excillum AB

Inventor： Björn Hansson

IPC: H01J35/30 ,  H01J35/14 ,  G01N23/04 ,  H05G1/52

CPC classification number: H01J35/30 ,  G01N23/04 ,  H01J35/153 ,  H05G1/52 ,  G01N2223/1016 ,  G01N2223/204 ,  G01N2223/3301 ,  G01N2223/3307

Abstract: A method for imaging a sample by means of an X-ray detector is disclosed, including providing an electron beam interacting with a target to generate X-ray radiation emitted from an X-ray spot on the target, moving the sample relative to the target, deflecting the electron beam such that the X-ray spot is moved over the target simultaneously and in accordance with the movement of the sample, and detecting X-ray radiation emitted from the X-ray spot and interacting with the sample.

公开(公告)号：US11728121B2

公开(公告)日：2023-08-15

申请号：US17572871

申请日：2022-01-11

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Atsushi Ishii ,  Akihito Kobayashi

IPC: H01J35/12 ,  H01J35/18 ,  H05G1/02 ,  H01J35/14

CPC classification number: H01J35/12 ,  H01J35/186 ,  H01J35/153 ,  H01J35/18 ,  H01J2235/122 ,  H01J2235/1204 ,  H01J2235/1216 ,  H01J2235/1245 ,  H01J2235/1283 ,  H01J2235/1291 ,  H01J2235/18 ,  H05G1/025

Abstract: An X-ray module includes a housing in which an opening portion is formed; an electron gun that emits an electron beam; a target that transmits an X-ray generated when the electron beam is incident on the target and emits the X-ray from an X-ray-emitting surface; an X-ray-emitting window that seals the opening portion, and that transmits the X-ray and emits the X-ray to a first side in an axial direction; and a heat radiating unit disposed outside the housing. The housing includes a surface on which a protrusion protruding to the first side is formed, the opening portion is formed in the protrusion, and the target is disposed in the opening portion. The heat radiating unit includes a first portion extending along the surface and thermally connected to the surface, and a second portion extending from the first portion to a second side opposite the first side.

公开(公告)号：US20230178324A1

公开(公告)日：2023-06-08

申请号：US18074705

申请日：2022-12-05

Applicant: EMPYREAN MEDICAL SYSTEMS, INC.

Inventor： Kalman Fishman ,  Brian P. Wilfley ,  Christopher W. Ellenor ,  Donald Olgado ,  Chwen-Yuan Ku ,  Tobias Funk ,  Petre Vatahov ,  Christopher R. Mitchell

IPC: H01J35/14 ,  H01J35/16 ,  H01J35/32 ,  H01J35/30

CPC classification number: H01J35/153 ,  H01J35/16 ,  H01J35/32 ,  H01J35/30 ,  H01J2235/086 ,  H01J2235/166

Abstract: X-ray target element is comprised of a planar wafer. The planar wafer element includes a target layer and a substrate layer. The target layer is comprised of an element having a relatively high atomic number and the substrate layer is comprised of diamond. The substrate layer is configured to support the target layer and facilitate transfer of thermal energy away from the target layer.