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公开(公告)号：US20240215146A1
公开(公告)日：2024-06-27
申请号：US18501435
申请日：2023-11-03
发明人： Liang ZHANG , Yaohong LIU , Hao ZHA , Yu HE
摘要： The present application relates to a blocker rotary-switching device, a control method thereof and an accelerator, the device including: a plurality of blockers for changing dose distribution of rays output from an accelerating tube of an accelerator, the plurality of blockers including blockers which have different change amounts to the dose distribution; and a rotary switch installed with the plurality of blockers and switching positions where the blockers are installed by rotation so as to locate the blocker at an installation position corresponding to a target dose distribution at an outlet of the accelerating tube. By providing a plurality of blockers and rotatably switching the plurality of blockers, a plurality of dose distributions can be achieved without frequently replacing the blocker.
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2.发明公开公开(公告)号：US20240196511A1
公开(公告)日：2024-06-13
申请号：US18367595
申请日：2023-09-13
申请人： Hitachi, Ltd.
摘要： A beam transport system for transporting a charged particle beam, includes a magnetic field generation device that is provided in a transport line that transports the charged particle beam and generates a magnetic field parallel to a center orbit of the charged particle beam, and a beam shielding device that is provided in a region through which the charged particle beam in the magnetic field generation device passes, causes a charged particle beam in a predetermined range of the charged particle beam to pass through, and stops other charged particle beams.
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3.发明授权公开(公告)号：US11825590B2
公开(公告)日：2023-11-21
申请号：US17473015
申请日：2021-09-13
CPC分类号： H05H9/042 , H05H7/001 , H05H7/22 , H05H2007/007 , H05H2007/222
摘要： A drift tube may include a middle portion, arranged as a hollow cylinder, and coupled to receive an RF voltage signal. The drift tube may include a first end portion, adjacent to and electrically connected to the middle portion. The middle portion and the first end portion may define a central opening to conduct an ion beam therethrough, along a direction of beam propagation. The first end portion may include a first focus assembly, and a second focus assembly, where the first focus assembly and the second focus assembly are movable with respect to one another along the direction of beam propagation, from a first configuration to a second configuration.
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公开(公告)号：US20230276564A1
公开(公告)日：2023-08-31
申请号：US18069108
申请日：2022-12-20
CPC分类号： H05H7/12 , H05H7/001 , H05H9/045 , H05H2007/122
摘要： A high gradient linear accelerating structure can propagate high frequency waves at a negative harmonic to accelerate low-energy ions. The linear accelerating structure can provide a gradient of 50 MV/m for particles at a β of between 0.3 and 0.4. The high gradient structure can be a part of a linear accelerator configured to provide an energy range from an ion source to 450 MeV/u for 12C6+ and 250 MeV for protons. The linear accelerator can include one or more of the following sections: a radiofrequency quadrupole (RFQ) accelerator operating at the sub-harmonic of the S-band frequency, a high gradient structure for the energy range from ˜45 MeV/u to ˜450 MeV/u.
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公开(公告)号：US20190124755A1
公开(公告)日：2019-04-25
申请号：US16164521
申请日：2018-10-18
发明人： Frantisek VLASAK , Pavel JELINEK
CPC分类号： H05H7/001 , B65G51/04 , G21F7/06 , G21G1/00 , G21G1/10 , G21K5/08 , G21K5/10 , H05H6/00 , H05H13/005
摘要： An automatic reloading and transport system for solid targets for a particle accelerator using a pneumatic tube transport system from the point of target activation by a particle accelerator to a target processing point and back, comprising a pneumatic tube transport system with end stations for receipt and dispatch of a capsule accommodating the target, a handling mechanism for both manipulating the solid target and handling the capsule and a target positioning system.
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公开(公告)号：US20180098413A1
公开(公告)日：2018-04-05
申请号：US15725350
申请日：2017-10-05
CPC分类号： H05H13/02 , A61N5/1043 , A61N2005/1087 , H05H7/001 , H05H7/02 , H05H7/04 , H05H2007/008 , H05H2007/022 , H05H2007/025 , H05H2007/046 , H05H2277/10
摘要： The embodiments of the present disclosure relate to a method and system for controlling the extraction of ion beam pulses produced by a synchrocyclotron. The synchrocyclotron comprises electrodes configured to be placed in a magnetic field. An alternating voltage is applied between the electrodes, and the frequency of the alternating voltage is modulated in a cyclic manner. In other embodiments, the method further comprises the steps of starting an acceleration cycle of the synchrocyclotron, generating a reference signal when the modulated frequency reaches a predefined value, communicating the time, at which the reference signal is generated, to the beam control elements, assessing one or more status parameters of the one or more beam control elements, and cancelling or proceeding with the extraction of the beam pulse depending on the results of the assessment.
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公开(公告)号：US09907153B2
公开(公告)日：2018-02-27
申请号：US15594538
申请日：2017-05-12
发明人： Michel Abs , Sébastien De Neuter
CPC分类号： H05H7/10 , H01F3/10 , H01F7/02 , H01F7/20 , H05H7/001 , H05H7/04 , H05H13/005 , H05H13/08 , H05H2007/002 , H05H2007/043
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%.
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8.发明申请公开(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
CPC分类号： E21B33/13 , H05H7/001 , H05H7/04 , H05H2007/002 , H05H2007/045 , H05H2245/123
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.
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公开(公告)号：US20170318657A1
公开(公告)日：2017-11-02
申请号：US15531806
申请日：2014-12-08
申请人： Hitachi, Ltd.
发明人： Takamichi AOKI , Fuutarou EBINA , Hideaki NISHIUCHI , Shigemitsu HARA , Masumi UMEZAWA , Takayoshi SEKI
CPC分类号： H05H7/001 , A61N5/10 , A61N5/1077 , A61N2005/1087 , H05H7/02 , H05H7/04 , H05H7/08 , H05H13/005 , H05H13/04 , H05H2007/002 , H05H2007/004 , H05H2007/008 , H05H2007/025 , H05H2007/045 , H05H2007/048 , H05H2007/082 , H05H2007/087
摘要： An accelerator 4 includes a circular vacuum container including circular return yokes 5A, 5B. An injection electrode 18 is disposed closer to an inlet of a beam extraction path 20 in the return yoke 5B than a central axis C of the vacuum container. Magnetic poles 7A to 7F are radially disposed from the injection electrode 18 at the periphery of the injection electrode 18 in the return yoke 5B. Recessions 29A to 29F are disposed alternately with the magnetic poles 7A to 7F in the circumferential direction of the return yoke 5B. In the vacuum container, a concentric trajectory region, in which multiple beam turning trajectories centered around the injection electrode 18 are present, is formed, and an eccentric trajectory region, in which multiple beam turning trajectories eccentric from the injection electrode 18 are present, is formed around the region.
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10.发明授权Electron beam plasma source with segmented beam dump for uniform plasma generation 有权电子束等离子体源，具有分段光束堆，用于均匀等离子体产生公开(公告)号：US08951384B2
公开(公告)日：2015-02-10
申请号：US13595292
申请日：2012-08-27
申请人： Leonid Dorf , Shahid Rauf , Kenneth S. Collins , Nipun Misra , James D. Carducci , Gary Leray , Kartik Ramaswamy
发明人： Leonid Dorf , Shahid Rauf , Kenneth S. Collins , Nipun Misra , James D. Carducci , Gary Leray , Kartik Ramaswamy
CPC分类号： H01J37/3233 , G21K5/00 , H05H1/46 , H05H7/001
摘要： A plasma reactor that generates plasma in a workpiece processing chamber by an electron beam, has an electron beam source and segmented beam dump that is profiled to promote uniformity in the electron beam-produced plasma.
摘要翻译： 通过电子束在工件处理室中产生等离子体的等离子体反应器具有电子束源和分段的束流，其形状是为了促进电子束产生的等离子体中的均匀性。
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