Patents by Inventor Kota Mizushima

Kota Mizushima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240096534
    Abstract: According to one embodiment, a superconducting coil apparatus comprising at least one superconducting coil formed of a plurality of turns under a definition that one turn is a portion of a superconducting wire annularly wound for one round, wherein: the superconducting coil has a shape along an outer peripheral surface of a tubular structure having a tubular shape; each of the plurality of turns has a coil longitudinal portion extending along an axial direction of the tubular structure; arrangement form of the coil longitudinal portion is different between a main magnetic field generation region configured to generate a main magnetic field and a magnetic field correction region configured to generate a correction magnetic field.
    Type: Application
    Filed: July 14, 2023
    Publication date: March 21, 2024
    Applicants: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, National Institutes for Quantum Science and Technology
    Inventors: Shigeki TAKAYAMA, Tomofumi ORIKASA, Kota MIZUSHIMA, Yoshiyuki IWATA, Yasushi ABE, Tetsuya FUJIMOTO
  • Publication number: 20230360831
    Abstract: According to one embodiment, a superconducting coil apparatus comprising at least one superconducting coil formed of a plurality of turns under a definition that one turn is a portion of a superconducting wire annularly wound for one round, wherein: the superconducting coil has a shape along an outer peripheral surface of a tubular structure having a tubular shape; each of the plurality of turns has a coil longitudinal portion extending along an axial direction of the tubular structure and a coil end portion extending from the coil longitudinal portion along a circumferential direction of the tubular structure; and a boundary line indicating a border between the coil longitudinal portion and the coil end portion at each of the plurality of turns is inclined with respect to a reference line extending in the circumferential direction of the tubular structure in a side view of the tubular structure.
    Type: Application
    Filed: July 14, 2023
    Publication date: November 9, 2023
    Applicants: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, National Institutes for Quantum Science and Technology
    Inventors: Shigeki TAKAYAMA, Tomofumi ORIKASA, Kota MIZUSHIMA, Yoshiyuki IWATA, Yasushi ABE, Tetsuya FUJIMOTO
  • Publication number: 20230209696
    Abstract: Disclosed a particle accelerator that accelerates a charged particle beam while circulating the charged particle beam as a circulating beam and outputs some of the circulating beam as an output beam, the particle accelerator including: a first deflection section and a second deflection sections each having a deflection electromagnet; a first straight section, a second straight section, and third straight section each not having the deflection electromagnet; and a control unit, wherein a preceding output deflector of the first straight section deflects some of the circulating beam toward an inner side of a circulating trajectory of the circulating beam to separate the some of the circulating beam as an output beam, wherein a succeeding output deflector of the third straight section deflects the output beam separated from the circulating beam by the preceding output deflector toward an outer side of the circulating trajectory of the circulating beam, and wherein the control unit controls at least the quadrupole
    Type: Application
    Filed: January 29, 2021
    Publication date: June 29, 2023
    Inventors: Kota Mizushima, Toshiyuki Shirai
  • Publication number: 20230003772
    Abstract: A particle-accelerator diagnostic technology capable of evaluating extraction efficiency of charged particles in a short cycle is provided. A diagnostic device for a particle accelerator includes: a first receiver configured to receive a first detection signal from a first detector that detects a first current value generated by movement of charged particles in a circular accelerator, the first detection signal being outputted as a signal corresponding to the first current value; a second receiver configured to receive a second detection signal from a second detector that detects a second current value generated by movement of charged particles extracted from the circular accelerator into a beam transport system, the second detection signal being outputted as a signal corresponding to the second current value; and a calculator configured to calculate an extraction efficiency of charged particles based on the first and second detection signals.
    Type: Application
    Filed: September 8, 2022
    Publication date: January 5, 2023
    Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Munemichi MATSUMOTO, Katsushi HANAWA, Kota MIZUSHIMA, Takuji FURUKAWA
  • Publication number: 20220132648
    Abstract: The invention provides a charged particle emission control technique by which slow extraction of a charged particle beam from a synchrotron can be stably performed even in a state where beam adjustment has not been performed or completed. A charged particle emission control device includes: a first receiver configured to receive a first detection signal obtained by detecting a current value of charged particles orbiting in a synchrotron; an arithmetic processor configured to time-differentiate the first detection signal and output a beam-intensity equivalent-value; and an emission controller configured to output a control signal for emitting a charged particle beam from the synchrotron to a beam transport system in such a manner that the beam intensity-equivalent value matches a target value.
    Type: Application
    Filed: January 3, 2022
    Publication date: April 28, 2022
    Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Kohei KOTAKI, Munemichi MATSUMOTO, Takuji FURUKAWA, Kota MIZUSHIMA
  • Patent number: 10912954
    Abstract: A patient shuttle system, an irradiation system for particle therapy and an operation method thereof are provided. One embodiment of the present invention provides a patient shuttle system including a patient table on which a patient is placed, a drive device that causes the patient table to move parallel and/or rotate, and a drive control device that controls parallel movement and/or rotation of the patient table by the drive device, in accordance with a parallel movement amount and/or a rotation amount of the patient table that are received from a patient positioning system provided in a treatment room for particle therapy.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: February 9, 2021
    Assignee: B DOT MEDICAL INC.
    Inventors: Yousuke Hara, Takuji Furukawa, Eri Takeshita, Kota Mizushima
  • Publication number: 20200396824
    Abstract: A control method for an accelerator according to the present embodiment is a control method for an accelerator that supplies a current generating a magnetic field to a plurality of deflection electromagnets based on a current-value instruction signal. The method includes providing a flat region that makes a current value of the deflection electromagnet constant in a case of an acceleration cycle involving emission of the charged particles, not providing the flat region in the current-value instruction signal in a case of an acceleration cycle, smoothing time change of a current value in a transition of the current value to the flat region or a transition from the flat region, and determining a time required for the smoothing based on a predetermined energy for extracting the charged particles or a difference between energies before and after change to the predetermined extraction energy.
    Type: Application
    Filed: September 1, 2020
    Publication date: December 17, 2020
    Applicants: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, NATIONAL INSTITUTES FOR QUANTUM AND RADIOLOGICAL SCIENCE AND TECHNOLOGY
    Inventors: Munemichi Matsumoto, Takuji Furukawa, Kota Mizushima, Katsushi Hanawa
  • Publication number: 20200306563
    Abstract: A patient shuttle system, an irradiation system for particle therapy and an operation method thereof are provided. One embodiment of the present invention provides a patient shuttle system including a patient table on which a patient is placed, a drive device that causes the patient table to move parallel and/or rotate, and a drive control device that controls parallel movement and/or rotation of the patient table by the drive device, in accordance with a parallel movement amount and/or a rotation amount of the patient table that are received from a patient positioning system provided in a treatment room for particle therapy.
    Type: Application
    Filed: November 22, 2019
    Publication date: October 1, 2020
    Applicant: B dot Medical Inc.
    Inventors: Yousuke HARA, Takuji FURUKAWA, Eri TAKESHITA, Kota MIZUSHIMA
  • Patent number: 10446364
    Abstract: An embodiment of the invention is a focusing magnet including a coil pair arranged on both sides of a path of a charged particle beam. The coil pair generates an effective magnetic field region in which a magnetic field is oriented in a direction (z-axis) perpendicular to a traveling direction (x-axis) of a charged particle beam.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: October 15, 2019
    Assignee: B DOT MEDICAL INC.
    Inventors: Kota Mizushima, Takuji Furukawa, Eri Takeshita, Yousuke Hara, Naoya Saotome, Yuichi Saraya, Ryohei Tansho
  • Publication number: 20190311878
    Abstract: An embodiment of the invention is a focusing magnet including a coil pair arranged on both sides of a path of a charged particle beam. The coil pair generates an effective magnetic field region in which a magnetic field is oriented in a direction (z-axis) perpendicular to a traveling direction (x-axis) of a charged particle beam.
    Type: Application
    Filed: November 9, 2018
    Publication date: October 10, 2019
    Applicant: B dot Medical Inc.
    Inventors: Kota MIZUSHIMA, Takuji FURUKAWA, Eri TAKESHITA, Yousuke HARA, Naoya SAOTOME, Yuichi SARAYA, Ryohei TANSHO
  • Publication number: 20190311879
    Abstract: An embodiment of the invention is a focusing magnet including a coil pair arranged on both sides of a path of a charged particle beam. The coil pair generates an effective magnetic field region in which a magnetic field is oriented in a direction (z-axis) perpendicular to a traveling direction (x-axis) of a charged particle beam.
    Type: Application
    Filed: March 20, 2019
    Publication date: October 10, 2019
    Applicant: B dot Medical Inc.
    Inventors: Kota MIZUSHIMA, Takuji FURUKAWA, Eri TAKESHITA, Yousuke HARA, Naoya SAOTOME, Yuichi SARAYA, Ryohei TANSHO
  • Patent number: 10431418
    Abstract: An embodiment of the invention is a focusing magnet including a coil pair arranged on both sides of a path of a charged particle beam. The coil pair generates an effective magnetic field region in which a magnetic field is oriented in a direction (z-axis) perpendicular to a traveling direction (x-axis) of a charged particle beam.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: October 1, 2019
    Assignee: B DOT MEDICAL INC.
    Inventors: Kota Mizushima, Takuji Furukawa, Eri Takeshita, Yousuke Hara, Naoya Saotome, Yuichi Saraya, Ryohei Tansho
  • Patent number: 10420202
    Abstract: According to some embodiments, an accelerator control device has a high-frequency power controller and a timing controller. The high-frequency power controller supplies high frequency power for accelerating a charged particle beam to an accelerator. The timing controller controls an operation timing of a blocker that blocks the charged particle beam emitted from the accelerator based on a current value of the charged particle beam circulating in the accelerator.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: September 17, 2019
    Assignees: Toshiba Energy Systems & Solutions Corporation, National Institutes for Quantum and Radiological Science and Technology
    Inventors: Munemichi Matsumoto, Takuji Furukawa, Kota Mizushima, Katsushi Hanawa
  • Publication number: 20180317311
    Abstract: According to some embodiments, an accelerator control device has a high-frequency power controller and a timing controller. The high-frequency power controller supplies high frequency power for accelerating a charged particle beam to an accelerator. The tinting controller controls an operation timing of a blocker that blocks the charged particle beam emitted from the accelerator based on a current value of the charged particle beam circulating in the accelerator.
    Type: Application
    Filed: April 26, 2018
    Publication date: November 1, 2018
    Applicants: Toshiba Energy Systems & Solutions Corporation, National Institutes for Quantum and Radiological Science and Technology
    Inventors: Munemichi MATSUMOTO, Takuji Furukawa, Kota Mizushima, Katsushi Hanawa