| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Method and system for operating electron guns in magnetic fields | US13622212 | 2012-09-18 | US20130035905A1 | 2013-02-07 | Dragos E. Constantin; Rebecca Fahrig; Paul J. Keall |
| A method of configuring an electron gun for generating and injecting an electron beam into a linac accelerating waveguide operating in magnetic fringe fields of an MRI scanner in the absence of a magnetic shield is provided using an appropriately programmed computer to determining an anode drift tube diameter at an injection point of a linac according to a magnetic field value from an MRI scanner and to a predetermined current density, where the magnetic field has an isocenter, determining a transverse diameter of a Type M cathode in an electron gun, according to the anode drift tube diameter and the current density, and minimizing an emittance value in an electron beam of the electron gun at an entry point of the anode drift tube by optimizing the distance between the cathode and the anode, where the electron beam is along an axis of symmetry of the magnetic field. | ||||||
| 102 | LINEAR ACCELERATOR | US13463655 | 2012-05-03 | US20120280640A1 | 2012-11-08 | Marvin Möller; Sven Müller; Stefan Setzer |
| A method for pulsed operation of a linear accelerator includes generating pulses of charged particles. The generating includes emitting particles by a particle source and accelerating the particles in an accelerator device that includes a plurality of linked cavity resonators. The accelerator device is supplied with energy by an energy supply unit. Particle energy is changed solely by varying a number of particles emitted by the particle source per pulse. | ||||||
| 103 | PARTICLE BEAM INJECTOR SYSTEM AND METHOD | US13253944 | 2011-10-05 | US20120085920A1 | 2012-04-12 | Gary Guethlein |
| Methods and devices enable coupling of a charged particle beam to a radio frequency quadrupole accelerator. Coupling of the charged particle beam is accomplished, at least inpart, by relying on of sensitivity of the input phase space acceptance of the radio frequency quadrupole to the angle of the input charged particle beam. A first electric field across a beam deflector deflects the particle beam at an angle that is beyond the acceptance angle of the radio frequency quadrupole. By momentarily reversing or reducing the established electric field, a narrow portion of the charged particle beam is deflected at an angle within the acceptance angle of the radio frequency quadrupole. In another configuration, beam is directed at an angle within the acceptance angle of the radio frequency quadrupole by the first electric field and is deflected beyond the acceptance angle of the radio frequency quadrupole due to the second electric field. | ||||||
| 104 | Use of off-axis injection as an alternative to geometrically merging beams in an energy-recovering linac | US12316059 | 2008-12-09 | US08093840B1 | 2012-01-10 | David R. Douglas |
| A method of using off-axis particle beam injection in energy-recovering linear accelerators that increases operational efficiency while eliminating the need to merge the high energy re-circulating beam with an injected low energy beam. In this arrangement, the high energy re-circulating beam and the low energy beam are manipulated such that they are within a predetermined distance from one another and then the two immerged beams are injected into the linac and propagated through the system. The configuration permits injection without geometric beam merging as well as decelerated beam extraction without the use of typical beamline elements. | ||||||
| 105 | MULTI-FIELD CHARGED PARTICLE CANCER THERAPY METHOD AND APPARATUS | US12994130 | 2009-05-21 | US20110233423A1 | 2011-09-29 | Vladimir Yegorovich Balakin |
| The invention comprises a multi-field charged particle irradiation method and apparatus. Radiation is delivered through an entry point into the tumor and Bragg peak energy is targeted to a distal or far side of the tumor from an ingress point. Delivering Bragg peak energy to the distal side of the tumor from the ingress point is repeated from multiple rotational directions. Preferably, beam intensity is proportional to radiation dose delivery efficiency. Preferably, the charged particle therapy is timed to patient respiration via control of charged particle beam injection, acceleration, extraction, and/or targeting methods and apparatus. Optionally, multi-axis control of the charged particle beam is used simultaneously with the multi-field irradiation. Combined, the system allows multi-field and multi-axis charged particle irradiation of tumors yielding precise and accurate irradiation dosages to a tumor with distribution of harmful irradiation energy about the tumor. | ||||||
| 106 | CHARGED PARTICLE BEAM ACCELERATION METHOD AND APPARATUS AS PART OF A CHARGED PARTICLE CANCER THERAPY SYSTEM | US12994117 | 2009-05-21 | US20110180720A1 | 2011-07-28 | Vladimir Yegorovich Balakin |
| The invention comprises a charged particle beam acceleration method and apparatus used as part of multi-axis charged particle radiation therapy of cancerous tumors. The accelerator includes a synchrotron having advances in turning magnets, edge focusing magnets, magnetic field concentration magnets, and extraction and intensity control elements that minimize the overall size of the synchrotron, provide a tightly controlled proton beam, directly reduce the size of required magnetic fields, directly reduces required operating power, and allows independent energy and intensity control of extracted charged particles from the synchrotron. | ||||||
| 107 | Perturbation device for charged particle circulation system | US12294727 | 2007-03-27 | US07977895B2 | 2011-07-12 | Hironari Yamada |
| A perturbation device for a charged particle circulation system, capable of readily generating a distribution profile of a perturbation magnetic field, is provided. By partially superposing a perturbation magnetic field on a main magnetic field for circulating charged particles, perturbation is produced in trajectories of the charged particles. Then, the charged particles that have been injected into the charged particle circulation system are captured into a stable circular closed orbit. Using a leakage magnetic field formed of a magnetic field generated by magnetic field generation devices, each including a high-frequency coil, the perturbation magnetic field is generated. | ||||||
| 108 | CHARGED PARTICLE BEAM INJECTION METHOD AND APPARATUS USED IN CONJUNCTION WITH A CHARGED PARTICLE CANCER THERAPY SYSTEM | US12994106 | 2009-05-21 | US20110118530A1 | 2011-05-19 | Vladimir Yegorovich Balakin |
| The invention comprises a charged particle beam injection method and apparatus used in conjunction with multi-axis charged particle radiation therapy of cancerous tumors. The negative ion beam source includes a negative ion beam source, vacuum system, an ion beam focusing lens, and/or a tandem accelerator. The negative ion beam source uses electric field lines for focusing a negative ion beam. The negative ion source plasma chamber includes a magnetic material, which provides a magnetic field barrier between a high temperature plasma chamber and a low temperature plasma region. The injection system vacuum system and a synchrotron vacuum system are separated by a conversion foil, where negative ions are converted to positive ions. The foil is sealed to the edges of the vacuum tube providing for a higher partial pressure in the injection system vacuum chamber and a lower pressure in the synchrotron vacuum system. | ||||||
| 109 | PERTURBATION DEVICE FOR CHARGED PARTICLE CIRCULATION SYSTEM | US12294727 | 2007-03-27 | US20100231335A1 | 2010-09-16 | Hironari Yamada |
| A perturbation device for a charged particle circulation system, capable of readily generating a distribution profile of a perturbation magnetic field, is provided.By partially superposing a perturbation magnetic field on a main magnetic field for circulating charged particles, perturbation is produced in trajectories of the charged particles. Then, the charged particles that have been injected into the charged particle circulation system are captured into a stable circular closed orbit. Using a leakage magnetic field formed of a magnetic field generated by magnetic field generation devices 113A and 113B each including a high-frequency coil, the perturbation magnetic field is generated. | ||||||
| 110 | CHARGED PARTICLE CANCER THERAPY AND PATIENT POSITIONING METHOD AND APPARATUS | US12554913 | 2009-09-06 | US20100027745A1 | 2010-02-04 | Vladimir Balakin |
| The invention comprises a laying, semi-vertical, or seated patient positioning, alignment, and/or control method and apparatus used in conjunction with multi-axis charged particle or proton beam radiation therapy of cancerous tumors. Patient positioning constraints are used to maintain the patient in a treatment position, including one or more of: a seat support, a back support, a head support, an arm support, a knee support, and a foot support. One or more of the positioning constraints are movable and/or under computer control for rapid positioning and/or immobilization of the patient. The system optionally uses an X-ray beam that lies in substantially the same path as a proton beam path of a particle beam cancer therapy system. The generated image is usable for: fine tuning body alignment relative to the proton beam path, to control the proton beam path to accurately and precisely target the tumor, and/or in system verification and validation. | ||||||
| 111 | Cyclotron equipped with novel particle beam deflecting means | US10522649 | 2003-07-18 | US07456591B2 | 2008-11-25 | Yves Jongen |
| The invention concerns a cyclotron for accelerating a charged particle beam circulating in the median plane essentially in the form of two poles inducing a magnetic field and having a so-called axial injector, that is an injector arranged outside the cyclotron substantially along the main axis of the cyclotron and hence perpendicular to the median plane thereof and which is combined with deflecting means which enable the particle beam to be deflected until it is positioned in the median plane. The invention is characterized in that the deflecting means consist of a magnetic deflector. | ||||||
| 112 | Apparatus for pre-acceleration of ion beams used in a heavy ion beam application system | US11037572 | 2005-01-18 | US07138771B2 | 2006-11-21 | Alexander Bechthold; Ulrich Ratzinger; Alwin Schempp; Bernhard Schlitt |
| The present invention relates to an apparatus for pre-acceleration of ions and optimized matching of beam parameters used in a heavy ion application comprising a radio frequency quadruple accelerator (RFQ) having two mini-vane pairs supported by a plurality of alternating stems accelerating the ions from about 8 keV/u to about 400 keV/u and an intertank matching section for matching the parameters of the ion beam coming from the radio frequency quadruple accelerator (RFQ) to the parameters required by a subsequent drift tube linear accelerator (DTL). | ||||||
| 113 | Cyclotron equipped with novel particle beam deflecting means | US10522649 | 2003-07-18 | US20050269497A1 | 2005-12-08 | Yves Jongen |
| The invention concerns a cyclotron for accelerating a charged particle beam circulating in the median plane essentially in the form of two poles inducing a magnetic field and having a so-called axial injector, that is an injector arranged outside the cyclotron substantially along the main axis of the cyclotron and hence perpendicular to the median plane thereof and which is combined with deflecting means which enable the particle beam to be deflected until it is positioned in the median plane. The invention is characterized in that the deflecting means consist of a magnetic deflector. | ||||||
| 114 | Apparatus for generating and selecting ions used in a heavy ion cancer therapy facility | US10470464 | 2003-11-12 | US20040069958A1 | 2004-04-15 | Ludwig Dahl; Bernhard Schlitt |
| The present invention relates to an apparatus for generating, extracting and selecting ions used in a heavy ion cancer therapy facility. The apparatus comprises an independent first (ECRIS 1) and an independent second electron cyclotron resonance ion source (ECRIS 2) for generating heavy and light ions, respectively. Further is enclosed downstream of spectrometer magnet (SP1, SP2) for selecting heavy ion species of one isotopic configuration positioned downstream of each ion source (ECRIS 1, ECRIS 2): a magnetic quadrupole triplet (QT1, QT2) positioned downstream of each spectrometer magnet (SP1, SP2); a switching magnet (SM) for switching between high-LET ion species and low-LET ion species of said two independent first and second ion source. | ||||||
| 115 | Electromagnets for and method of deflecting and splitting a particle beam | US10094415 | 2002-03-08 | US06633039B2 | 2003-10-14 | Izumi Sakai |
| A septum electromagnet deflects and splits a particle beam. A preferred embodiment of the septum electromagnet comprises a septum conductor that divides the septum electromagnet to define first and second beam deflecting magnetic pole spaces. First and second magnetic fields are generated in, respectively, the first and second beam deflecting magnetic pole spaces by electric currents flowing through the coils associated with the septum conductor. The direction of the first magnetic field is opposite to the direction of the second magnetic field, such that a particle beam passing through the first beam deflecting magnetic pole space is angularly deflected by an amount and a particle beam passing through the second beam deflecting magnetic pole space is angularly deflected by an opposite amount. | ||||||
| 116 | Electromagnets for and method of deflecting and splitting a particle beam | US10094415 | 2002-03-08 | US20020148973A1 | 2002-10-17 | Izumi Sakai |
| A septum electromagnet deflects and splits a particle beam. A preferred embodiment of the septum electromagnet comprises a septum conductor that divides the septum electromagnet to define first and second beam deflecting magnetic pole spaces. First and second magnetic fields are generated in, respectively, the first and second beam deflecting magnetic pole spaces by electric currents flowing through the coils associated with the septum conductor. The direction of the first magnetic field is opposite to the direction of the second magnetic field, such that a particle beam passing through the first beam deflecting magnetic pole space is angularly deflected by an amount and a particle beam passing through the second beam deflecting magnetic pole space is angularly deflected by an opposite amount. | ||||||
| 117 | Permanent magnet focused X-band photoinjector | US09538347 | 2000-03-29 | US06448722B1 | 2002-09-10 | David U. L. Yu; James Rosenzweig |
| A compact high energy photoelectron injector integrates the photocathode directly into a multicell linear accelerator with no drift space between the injection and the linac. High electron beam brightness is achieved by accelerating a tightly focused electron beam in an integrated, multi-cell, X-band rf linear accelerator (linac). The photoelectron linac employs a Plane-Wave-Transformer (PWT) design which provides strong cell-to-cell coupling, easing manufacturing tolerances and costs. | ||||||
| 118 | Superconducting cyclotron for use in the production of heavy isotopes | US793651 | 1997-06-20 | US5874811A | 1999-02-23 | Martin Finlan; Edgar Lorch |
| A superconducting cyclotron is provided that includes a superconducting magnet. This superconducting magnet is arranged to provide a magnetic field that extends axially through a chamber which includes a radially extending beam space. There is further an interaction within the chamber between the axially extending magnetic field and RF energy that energizes particles that are circulating within the beam space. There is further a linear accelerator that is aligned with and exposed to the axially extending magnetic field of the superconducting cyclotron. The output of this linear accelerator communicates with an input to the beam space so that the particles for acceleration within the beam space are pre-accelerated by the linear accelerator. | ||||||
| 119 | Circular accelerator, method of injection of charged particle thereof, and apparatus for injection of charged particle thereof | US763319 | 1996-12-10 | US5789875A | 1998-08-04 | Kazuo Hiramoto; Junichi Hirota; Kenji Miyata; Masatsugu Nishi |
| The present invention is to provide a method and an apparatus which are able to inject large electric current to a circular accelerator. In order to inject large electric current, that is, a large number of charged particles, a means is provided for injecting a beam into other region of a vacuum duct than the region which is defined as having a height equivalent to the height of the injected beam and a width from the injected point in the vacuum duct to the symmetrical point to the injected point with respect to the geometrical center of the vacuum duct. | ||||||
| 120 | Cyclotron and method of adjusting the same having an ion puller electrode with a movable aperture | US733269 | 1996-10-17 | US5763986A | 1998-06-09 | Noriyoshi Nakanishi; Shuichiro Wakase |
| A cyclotron comprises a dee, an ion source cone provided with an ion outlet through which ions are emitted, and an ion puller electrode mounted on the dee to pull out ions from the ion source cone through the ion outlet by applying a voltage between the ion source and the ion puller electrode. The ion source cone can be moved from outside the cyclotron without breaking the vacuum of the cyclotron. The ion puller electrode has a sliding aperture member provided with an aperture and capable of being moved relative to the dee. An operating projection of the ion source cone is brought into engagement with the aperture member, and then the ion source cone is moved to move the aperture member to a desired position. Thus, the aperture of the ion puller electrode can be positioned at an appropriate position opposite the ion outlet by moving the ion source cone without requiring any special mechanism for moving the ion puller electrode. | ||||||
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