Patents by Inventor Kimiko OKAZAKI

Kimiko OKAZAKI 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).

  • Radio frequency voltage control system in synchrotron accelerating cavity
    Patent number: 9860969
    Abstract: At the start of beam extraction, the amplitude value of an acceleration radio frequency voltage is held at a first amplitude value. When the irradiation dose stemming from beam extraction reaches a prescribed dose, the amplitude value of the acceleration radio frequency voltage applied to an accelerating cavity starts to be increased from the first amplitude value to a second amplitude value. When the irradiation dose reaches a target dose, the amplitude value is raised to and held at the second amplitude value. By the time the irradiation is restarted, the amplitude value of the acceleration radio frequency voltage applied to the accelerating cavity is reduced from the second amplitude value to the first amplitude value. At the start of beam extraction, the amplitude value is held at the first amplitude value.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: January 2, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Kimiko Okazaki, Hideaki Nishiuchi, Kunio Moriyama
  • CHARGED PARTICLE BEAM IRRADIATION SYSTEM AND OPERATING METHOD FOR THE SAME
    Publication number: 20150283404
    Abstract: At the start of beam extraction, the amplitude value of an acceleration radio frequency voltage is held at a first amplitude value. When the irradiation dose stemming from beam extraction reaches a prescribed dose, the amplitude value of the acceleration radio frequency voltage applied to an accelerating cavity starts to be increased from the first amplitude value to a second amplitude value. When the irradiation dose reaches a target dose, the amplitude value is raised to and held at the second amplitude value. By the time the irradiation is restarted, the amplitude value of the acceleration radio frequency voltage applied to the accelerating cavity is reduced from the second amplitude value to the first amplitude value. At the start of beam extraction, the amplitude value is held at the first amplitude value.
    Type: Application
    Filed: April 6, 2015
    Publication date: October 8, 2015
    Inventors: Kimiko OKAZAKI, Hideaki NISHIUCHI, Kunio MORIYAMA