公开(公告)号：US20200170099A1

公开(公告)日：2020-05-28

申请号：US16698149

申请日：2019-11-27

Applicant: Ion Beam Applications S.A.

Inventor： Michel ABS ,  Jeremy BRISON ,  Willem KLEEVEN

IPC: H05H13/10 ,  G21K1/093 ,  G21K5/04 ,  H05H7/02 ,  H05H7/04 ,  H05H7/18 ,  H05H7/08

Abstract: A vario-energy electron accelerator includes a resonant cavity consisting of a closed conductor, an electron source injecting a beam of electrons into the resonant cavity, an RF system coupled to the resonant cavity and generating an electric field in the resonant cavity, magnet units centred on a mid-plane and generating a field in a deflecting chamber in fluid communication with the resonant cavity, the magnetic field deflecting along a first deflecting trajectory of adding length an electron beam exiting the resonant cavity along a first radial trajectory to reintroduce it into the resonant cavity along a second radial trajectory, an outlet for extracting along an extraction path an accelerated electron beam from the resonant cavity towards a target, wherein at least one of the magnet units is adapted for modifying the first deflecting trajectory to a second deflecting trajectory, allowing a variation of the energy of the electron beam.

公开(公告)号：US20200094077A1

公开(公告)日：2020-03-26

申请号：US16412591

申请日：2019-05-15

Applicant: Hitachi, Ltd.

Inventor： Hideaki NISHIUCHI ,  Hiroyuki SATAKE ,  Yui SHINOZAWA ,  Yujiro FUJISAKI

IPC: A61N5/10 ,  G21K1/02 ,  G21K1/093 ,  G21K5/04 ,  G21K1/00

Abstract: A particle therapy system includes a building having a first floor and second floors and, a particle beam generator installed on the first floor and configured to generate a particle beam, a first transport system configured to transport a particle beam from the particle beam generator to a first irradiation system in a first treatment room, and a second transport system configured to transport a particle beam to a second irradiation system in a second treatment room, branched from the first transport system, via a second floor. The second transport system has a first bending magnet that bends a particle beam to the direction of the second floor different from the installation surface of the particle beam generator. The building has a shielding wall configured to shield the first floor and the second floor and the second transport system is provided penetrating the shielding wall.

公开(公告)号：US10586675B2

公开(公告)日：2020-03-10

申请号：US16082352

申请日：2017-03-08

Applicant: PANTECHNIK ,  A.D.A.M. SA

Inventor： Pierre Salou ,  Daniel Fink

IPC: G21K5/04 ,  H05H7/04 ,  H05H7/08 ,  G21K1/087 ,  G21K1/093 ,  H01J37/04 ,  H01J37/147

Abstract: A device for modulating the intensity of a charged particle beam emitted along an axis, comprises 4×N consecutive deflection systems, with N=1 or 2, with the deflection systems being positioned along the axis of said particle beam, and being capable of deflecting the beam relative to the axis in the same direction, with alternating directions of deflection, for two consecutive systems, means for applying a force for deflecting the beam for each deflection system and for varying the applied force; two collimators each having a slot with an opening that increases in width from the center towards the periphery, located respectively between the first and second deflection systems and between the third and fourth deflection systems, with the opening of the slot of the first collimator facing towards one side of the emission axis of the beam, with the opening of the slot of the second collimator facing towards the opposite side of the emission axis of the beam.

公开(公告)号：US20200043625A1

公开(公告)日：2020-02-06

申请号：US16056114

申请日：2018-08-06

Applicant: Accuray Incorporated

Inventor： Eric Schnarr ,  Hari Gopalakrishnan ,  Jari Toivanen ,  Matthew Orton

IPC: G21K1/04 ,  A61N5/10 ,  G21K1/093

Abstract: A radiation treatment delivery system, includes a linear accelerator (LINAC) and a multileaf collimator (MLC), coupled with the distal end of the LINAC, wherein the MLC has two banks of leaves, organized into a plurality of opposing leaf pairs. The system further includes a processing device, operatively coupled to the LINAC and the MLC, to control the plurality of leaf pairs of the MLC such that for each of a plurality of radiation beam delivery positional sections corresponds to a range of radiation beam positions over a discrete time interval, wherein each leaf pair of the plurality of opposing leaf pairs is open to a fixed opening for a fraction of time in the discrete time interval and closed for the remaining fraction of time in the discrete time interval, while a radiation beam of the radiation treatment system is active.

公开(公告)号：US20200001119A1

公开(公告)日：2020-01-02

申请号：US16569332

申请日：2019-09-12

Applicant: KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION

Inventor： Tomoyuki NONAKA ,  Shinya MATSUDA ,  Tomofumi ORIKASA

IPC: A61N5/10 ,  G21K5/04 ,  A61N5/01 ,  G21K1/093

Abstract: A rotary irradiation apparatus of an embodiment comprises: a rotating gantry; a superconducting electromagnet being installed in the rotating gantry and forming at least one of a deflecting magnetic field that deflects a trajectory of a charged particle beam and a convergent magnetic field that converges the charged particle beam to guide the charged particle beam to an object to be irradiated; a rotating gantry drive unit that drives/rotates the rotating gantry; and a control device that controls the rotating gantry drive unit to rotate and stop the rotating gantry, while the superconducting electromagnet is being excited and the charged particle beam is not irradiated.

公开(公告)号：US20190351258A1

公开(公告)日：2019-11-21

申请号：US16526978

申请日：2019-07-30

Applicant: Faye Hendley Elgart ,  Nick Ruebel ,  Mark R. Amato ,  Nandish Desai ,  W. Davis Lee

Inventor： Faye Hendley Elgart ,  Nick Ruebel ,  Mark R. Amato ,  Nandish Desai ,  W. Davis Lee

IPC: A61N5/10 ,  G21K1/093 ,  A61B6/03 ,  G21K5/04 ,  G21K1/087

Abstract: The invention comprises a method and apparatus for steering/scanning charged particles, comprising: a double dipole scanning system, comprising: (1) a beam path chamber comprising an entrance side and an exit side, the entrance side comprising a smaller area than the exit side; (2) a first dipole magnet, the first dipole magnet comprising a first coil and a third coil on first opposite sides of the beam path chamber; and (3) a second dipole magnet, the second dipole magnet comprising a second coil and a fourth coil on second opposite sides of the beam path chamber, the beam path chamber further comprising a truncated square/rectangle pyramid shape, the smaller entrance side of the charged particles comprising a top of the truncated pyramid shape, the exit side of the charged particles comprising a larger bottom of the truncated pyramid shape.

公开(公告)号：US10441226B2

公开(公告)日：2019-10-15

申请号：US15467930

申请日：2017-03-23

Applicant: VARIAN MEDICAL SYSTEMS, INC.

Inventor： Timothy E. Guertin ,  Richard H. Stark ,  Raymond D. McIntyre ,  Steven W. Prince ,  Stanley Mansfield ,  George A. Zdasiuk

IPC: A61N5/10 ,  A61B6/03 ,  A61B6/04 ,  A61B6/10 ,  A61B6/00 ,  G01N23/04 ,  G21K1/093 ,  A61B5/06 ,  A61B5/11 ,  A61B6/08

Abstract: A radiation system includes a first ring, a radiation source capable of providing radiation suitable for treating a patient, the radiation source secured to the first ring, a second ring located behind the first ring, and an imager secured to the second ring. A radiation system includes a first device having a radiation source capable of generating a radiation beam suitable for treating a patient, and a second device having imaging capability, wherein the first device is oriented at an angle that is less than 180° relative to the second device. A radiation system includes a structure having a first opening, a radiation source rotatably coupled to the structure, an imaging device rotatable relative to the structure, and a processor for controlling a rotation of the radiation source and a rotation of the imaging device, wherein the radiation source is rotatable relative to the imaging device.

公开(公告)号：US20190170127A1

公开(公告)日：2019-06-06

申请号：US16321313

申请日：2017-08-11

Applicant: Randell L. MILLS

Inventor： Randell L. MILLS

IPC: F03H99/00 ,  G21K1/16 ,  G21K1/087 ,  G21K1/093

Abstract: A method and means to produce a force for propulsion comprises a source of free electrons and a means to produce pseudoelectrons; whereas, a gravitating body such as the Earth provides a repulsive fifth force on the pseudoelectrons. Pseudoelectrons are produced by absorption of high-energy photons by free electrons or by angular momentum exchange between polarized relativistic free electrons and a collision partner such as H3+. The free electrons to undergo transitions to pseudoelectron states may be first formed in the ground spin state. The pseudoelectrons experience a fifth force (F2) away from the Earth and move upward (away from the Earth).

公开(公告)号：US10279198B2

公开(公告)日：2019-05-07

申请号：US15868966

申请日：2018-01-11

Applicant: W. Davis Lee ,  Mark R. Amato ,  Stephen L. Spotts ,  James P. Bennett

Inventor： W. Davis Lee ,  Mark R. Amato ,  Stephen L. Spotts ,  James P. Bennett

IPC: A61N5/10 ,  G21K5/04 ,  A61B6/03 ,  G21K1/093 ,  A61B6/00 ,  A61B6/04 ,  G01N23/046

Abstract: A scintillation material is longitudinally packaged in a circumferentially surrounding sheath, where the sheath has a lower index of refraction than the scintillation material, to form a scintillation optic or scintillation fiber optic. The scintillation material yields secondary photons upon passage of a charged particle beam, such as a positively charged residual particle beam having transmitted through a sample. The internally generated secondary photons within the sheath are guided to a detector element by the difference in index of refraction. Multiple scintillation optics are assembled to form a two-dimensional scintillation array coupled to a two-dimensional detector array, such as for use in determination of state of the residual charged particle beam, determination of an exit point of the particle beam from the sample, path of the treatment beam, and/or tomographic imaging.

公开(公告)号：US10258810B2

公开(公告)日：2019-04-16

申请号：US14497754

申请日：2014-09-26

Applicant: Mevion Medical Systems, Inc.

Inventor： Gerrit Townsend Zwart ,  James Cooley ,  Ken Yoshiki Franzen ,  Mark R. Jones ,  Tao Li ,  Michael Busky

IPC: A61N5/10 ,  H01J37/14 ,  H05H7/12 ,  H05H13/02 ,  G21K1/093 ,  G21K1/10

Abstract: An example particle therapy system includes: a synchrocyclotron to output a particle beam; a magnet to affect a direction of the particle beam to scan the particle beam across at least part of an irradiation target; scattering material that is configurable to change a spot size of the particle beam, where the scattering material is down-beam of the magnet relative to the synchrocyclotron; and a degrader to change an energy of the beam prior to output of the particle beam to the irradiation target, where the degrader is down-beam of the scattering material relative to the synchrocyclotron.