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    SYNCHROCYCLOTRON FOR EXTRACTING BEAMS OF VARIOUS ENERGIES
    61.
    发明申请
    SYNCHROCYCLOTRON FOR EXTRACTING BEAMS OF VARIOUS ENERGIES 有权

    公开(公告)号：US20210282257A1

    公开(公告)日：2021-09-09

    申请号：US17193997

    申请日：2021-03-05

    申请人： Ion Beam Applications S.A.

    发明人： Jérôme Mandrillon ,  Willem Kleeven ,  Jarno Van De Walle

    IPC分类号： H05H13/02 ,  H05H7/04 ,  H05H7/00

    摘要： A synchrocyclotron for extracting charged particles accelerated to an extraction energy includes a magnetic unit comprising N valley sectors and N hill sectors, and configured for creating z-component of a main magnetic characterized by a radial tune of the successive orbits. The synchrocyclotron includes a first instability coil unit and a second instability coil unit configured for creating a field bump of amplitude increasing radially. The amplitude of the field bump may be varied to reach the value of the offset amplitude at the average instability onset radius. The offset amplitude may be the minimal amplitude of the field bump at the average instability onset radius required for sufficiently offsetting the center of the orbit of average instability onset radius to generate a resonance instability to extract the beam of charged particle at the average instability onset radius.

    HIGH-SPEED ENERGY SWITCHING
    62.
    发明申请
    HIGH-SPEED ENERGY SWITCHING 审中-公开

    公开(公告)号：US20200368556A1

    公开(公告)日：2020-11-26

    申请号：US16895522

    申请日：2020-06-08

    申请人： Mevion Medical Systems, Inc.

    发明人： Gerrit Townsend Zwart ,  Mark R. Jones ,  James Cooley ,  Adam Molzahn

    IPC分类号： A61N5/10 ,  H05H7/00 ,  H05H7/04 ,  H05H13/02 ,  G21K1/10 ,  G21K1/04

    摘要： An example particle therapy system may include: a synchrocyclotron to produce a particle beam; a scanner to move the particle beam in one or more dimensions relative to an irradiation target; and an energy degrader that is between the scanner and the irradiation target. The energy degrader may include multiple plates that are movable relative to a path of the particle beam, with the multiple plates each being controllable to move while in the path of the particle beam and during movement of the particle beam. An aperture may be between the energy degrader and the irradiation target. The aperture being may be to trim the particle beam prior to the particle beam reaching the irradiation target.

    Energy degrader enabling high-speed energy switching
    63.
    发明授权
    Energy degrader enabling high-speed energy switching 有权

    公开(公告)号：US10675487B2

    公开(公告)日：2020-06-09

    申请号：US15399250

    申请日：2017-01-05

    申请人： Mevion Medical Systems, Inc.

    发明人： Gerrit Townsend Zwart ,  Mark R. Jones ,  James Cooley ,  Adam Molzahn

    IPC分类号： A61N5/10 ,  H05H7/04 ,  H05H7/00 ,  H05H13/02 ,  G21K1/10 ,  G21K1/04 ,  H05H7/12

    摘要： An example particle therapy system may include: a synchrocyclotron to produce a particle beam; a scanner to move the particle beam in one or more dimensions relative to an irradiation target; and an energy degrader that is between the scanner and the irradiation target. The energy degrader may include multiple plates that are movable relative to a path of the particle beam, with the multiple plates each being controllable to move while in the path of the particle beam and during movement of the particle beam. An aperture may be between the energy degrader and the irradiation target. The aperture being may be to trim the particle beam prior to the particle beam reaching the irradiation target.

    Magnetic field regenerator
    66.
    发明授权
    Magnetic field regenerator 有权

    公开(公告)号：US10368429B2

    公开(公告)日：2019-07-30

    申请号：US15441563

    申请日：2017-02-24

    申请人： Mevion Medical Systems, Inc.

    发明人： Kenneth P. Gall ,  Gerrit Townsend Zwart ,  Jan Van der Laan ,  Ken Yoshiki Franzen

    IPC分类号： A61N5/10 ,  H05H7/02 ,  H05H7/04 ,  H05H13/02 ,  H05H7/10

    摘要： An example particle accelerator includes the following: a voltage source to provide a radio frequency (RF) voltage to a cavity to accelerate particles from a plasma column, where the cavity has a magnetic field causing particles accelerated from the plasma column to move orbitally within the cavity; an extraction channel to receive the particles accelerated from the plasma column and to output the received particles from the cavity; and a regenerator to provide a magnetic field bump within the cavity to thereby change successive orbits of the particles accelerated from the plasma column so that, eventually, particles output to the extraction channel. The magnetic field is at least 6 Tesla and the magnetic field bump is at most 2 Tesla.