Compact cyclotron
    3.
    发明授权

    公开(公告)号:US09907153B2

    公开(公告)日:2018-02-27

    申请号:US15594538

    申请日:2017-05-12

    IPC分类号: H05H13/10 H05H7/04 H05H13/00

    摘要: The present disclosure relates to compact isochronous sector-focused cyclotrons having reduced dimensions and weight compared with state of the art cyclotrons of same energies. In one implementation, a cyclotron may include two pole magnets facing each other in a chamber defined by a yoke having base plates and flux return yokes forming a lateral wall of the chamber. The magnet poles may include between three and eight hill sectors alternating with a same number of valley sectors distributed about a central axis. The lip of the abyssal opening may be positioned at a distance from the corresponding valley peripheral edge. The flux return yoke may have a thickness in the portions facing valley sectors, such that the ratio of the product of the distance times the thickness to the square of the distance of the peripheral edge to the central axis is less than 5%.

    HIGH EFFICIENCY RADIATION-INDUCED TRIGGERING FOR SET-ON-COMMAND COMPOSITIONS AND METHODS OF USE

    公开(公告)号:US20170356271A1

    公开(公告)日:2017-12-14

    申请号:US15543964

    申请日:2015-02-17

    发明人: Samuel J. LEWIS

    IPC分类号: E21B33/13 H05H7/00 H05H7/04

    摘要: Systems and methods that produce bremsstrahlung radiation may facilitate the setting of a settable composition. For example, a method may include providing a settable composition in a portion of a wellbore penetrating a subterranean formation, a portion of the subterranean formation, or both; conveying an electron accelerator tool along the wellbore proximal to the settable composition; producing an electron beam in the electron accelerator tool with a trajectory that impinges a converter material, thereby converting the electron beam to bremsstrahlung photons; manipulating the trajectory of the electron beam in a radial direction, an axial direction, or both of the wellbore with a rastoring device of the electron accelerator tool; and irradiating the settable composition with the bremsstrahlung photons.

    PARTICLE THERAPY SYSTEM
    9.
    发明申请

    公开(公告)号:US20180326226A1

    公开(公告)日:2018-11-15

    申请号:US15963281

    申请日:2018-04-26

    申请人: Hitachi, Ltd.

    摘要: [Problem]A particle therapy system capable of reducing the installation area and also suppressing a variation in the irradiation beam position is provided. A synchrotron generates a charged particle beam, and a beam delivery system irradiates an irradiation target with a charged particle beam extracted from the synchrotron thereby forming a radiation field. A rotating gantry is provided with the beam delivery system and is rotatable around the irradiation target. Dispersion measuring devices, each of which measures the dispersion of the charged particle beam at the position of the irradiation target at a plurality of rotation angles of the rotating gantry, are also provided. The orbit center of the charged particle beam extracted from the synchrotron and the rotation axis of the rotating gantry are located on substantially the same straight line.

    Beam diffuser selector apparatus and system for a particle accelerator and method of use thereof

    公开(公告)号:US10062468B1

    公开(公告)日:2018-08-28

    申请号:US15830668

    申请日:2017-12-04

    IPC分类号: G21K1/10

    摘要: A beam diffuser selector apparatus, system and method for use with a particle accelerator. A movable member has a plurality of beam diffusers mounted thereon, each having a different predetermined thickness. A driving device is coupled to the movable member. The driving device is configured to selectively move the movable member such that a selected one of the beam diffusers is positioned in a test position which is adjacent to an output of the particle accelerator and between the output of the particle accelerator and a device under test. A controller is coupled to the driving device. The controller has a user interface for receiving commands selecting a particular one of the plurality of beam diffusers and provides control signals to the driving device to selectively move the movable member such that the selected one of the plurality of beam diffusers is positioned in the test position.