| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | X-RAY SOURCE EMPLOYING A COMPACT ELECTRON BEAM ACCELERATOR | PCT/US2004009616 | 2004-03-29 | WO2004093501A2 | 2004-10-28 | TRAIL MARK E; WHITTUM DAVID H; MEDDAUGH GARD E |
| A standing wave electron beam accelerator and x-ray source is described. The accelerator has a plurality of on-axis resonant cells having axial apertures electrically coupled to one another by on-axis coupling cells having axial apertures. The accelerator includes a buncher cavity defined in part by an apertured anode and a half cell. The buncher cavity is configured to receive electrons injected through said anode aperture and r.f. focus them into a beam which is projected along the axis through said apertures. An x-ray target is supported in spaced relationship to said accelerator by a support having a smaller diameter than the accelerator. | ||||||
| 62 | PARTICLE ACCELERATOR AND METHODS THEREFOR | PCT/US2006045335 | 2006-11-21 | WO2007062195A3 | 2009-05-07 | HANNA SAMY M |
| The linac (700) includes an electron gun for generating an electron beam, and a plurality of accelerating cavities (720a- g)which accelerates the electron beam by applying electromagnetic fields generated by a microwave source. At least two adjacent accelerating cavities of the plurality of accelerating cavities are coupled together by at least one coupling iris (718a). The electromagnetic fields resonate through the plurality of accelerating cavities, and the operating frequency of the electromagnetic fields is selected so that the linear accelerator is operating at a pi-mode or a mode close to the pi- mode. | ||||||
| 63 | Standing wave electron linear accelerators with continuously adjustable energy and method thereof | EP13198316.5 | 2013-12-19 | EP2750486B1 | 2018-10-10 | Tang, Chuanxiang; Zhang, Zhe; Jin, Qingxiu; Shi, Jiaru; Chen, Huaibi; Huang, Wenhui; Zheng, Shuxin; Liu, Yaohong |
| A standing wave electron linear accelerating apparatus and a method thereof are disclosed. The apparatus comprises an electron gun configured to generate electron beams; a pulse power source configured to provide a primary pulse power signal; a power divider coupled downstream from the pulse power source and configured to divide the primary pulse power signal outputted from the pulse power source into a first pulse power signal and a second pulse power signal; a first accelerating tube configured to accelerating the electron beams with the first pulse power signal; a second accelerating tube configured to accelerate the electron beams with the second pulse power signal; a phase shifter configured to continuously adjust a phase difference between the first pulse power signal and the second pulse power signal so as to generate accelerated electron beams with continuously adjustable energy at output of the second accelerating tube. | ||||||
| 64 | VERFAHREN ZUM BETRIEB EINES LINEARBESCHLEUNIGERS UND LINEARBESCHLEUNIGER | EP17194212.1 | 2017-09-29 | EP3321716A1 | 2018-05-16 | MÜLLER, Sven; KOSCHMIEDER, Martin; MÖLLER, Marvin; WILLING, Stefan |
Bei einem Verfahren zum Betrieb eines Linearbeschleunigers (1) werden geladene Teilchen von einer Teilchenquelle (2) emittiert und in einer Beschleunigungsvorrichtung (3) mittels eines hochfrequenten Wechselfelds derart beschleunigt, dass Pulse von geladenen Teilchen erzeugt werden. Der Beschleunigungsvorrichtung (3) wird zur Erzeugung des hochfrequenten Wechselfelds eine Hochfrequenzleistung (PHF) periodisch mittels Hochfrequenzpulse zugeführt. Gemäß der Erfindung wird ein von der Teilchenquelle (2) emittierter Teilchenstrom innerhalb einer HF-Pulsdauer (Δt) des Hochfrequenzpulses derart variiert, dass der innerhalb der HF-Pulsdauer (Δt) geformte Puls zumindest zwei Teilpulse mit unterschiedlichen mittleren Energien pro Teilchen aufweist. Die Erfindung betrifft ferner einen Linearbeschleuniger, der zur Durchführung des Verfahrens ausgebildet ist und eine Einrichtung der materialdiskriminierenden Radioskopie mit einem derartigen Linearbeschleuniger.
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| 65 | DISPOSITIF HYPERFREQUENCES D'ACCELERATION D'ELECTRONS | EP10745594.1 | 2010-08-19 | EP2468080B1 | 2017-07-05 | SIERRA, Serge |
| 66 | ACCELERATING STRUCTURE | EP13186319.3 | 2013-09-27 | EP2731409B1 | 2016-11-30 | Suzuki, Daisuke; Miura, Sadao |
| 67 | SYNCHROTRON INJECTOR SYSTEM, AND SYNCHROTRON INJECTOR SYSTEM OPERATION METHOD | EP13898114.7 | 2013-11-26 | EP3076767A1 | 2016-10-05 | YAMAMOTO Kazuo; KAWASAKI Sadahiro; INOUE Hiromitsu |
A synchrotron injector system comprising a first ion source (1) which generates first ions, a second ion source (2) which generates second ions having a smaller charge-to-mass ratio than a charge-to-mass ratio of the first ions, a pre-accelerator (5) having the capability to enable to accelerate both the first ions and the second ions, a low-energy beam transport line (4) which is constituted in such a way to inject either the first ions or the second ions into the pre-accelerator, and a self-focusing type post-accelerator (6) which accelerates only the first ions after acceleration which are emitted from the pre-accelerator (5). |
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| 68 | LINEAR ACCELERATOR | EP00949794.2 | 2000-08-03 | EP1203514B1 | 2013-06-19 | ALLEN, John; BRUNDLE, Leonard Knowles; LARGE, Terry Arthur; BATES, Terence |
| 69 | X-RAY APPARATUS | EP07857056.1 | 2007-12-21 | EP2229805B1 | 2011-10-12 | BROWN, Kevin, John; THOMPSON, Maria, Giulia; ROBERTS, David, Anthony; EVANS, Philip, Mark; HANSEN, Vibeke, Nordmark |
| X-ray apparatus comprises a linear accelerator adapted to produce a beam of electrons at one of at least two selectable energies and being controlled to change the selected energy on a periodic basis, and a target to which the beam is directed thereby to produce a beam of x-radiation, the target being non- homogenous and being driven to move periodically in synchrony with the change of the selected energy. In this way, the target can move so that a different part is exposed to the electron beam when different pulses arrive. This enables the appropriate target material to be employed depending on the selected energy. The easiest form of periodic movement for the target is likely to be a rotational movement. The target can be immersed in a coolant fluid such as water. The linear accelerator can be of the type disclosed in WO2006/097697A1. The target preferably contains at least one exposed area of tungsten and/or at least one exposed area of carbon. These can be present as inhomogeneities in the material of which the target is composed, such as Carbon inserts in a Tungsten substrate (or vice versa), alternating segments of Carbon and Tungsten, Carbon and Tungsten inserts in a substrate of a third material, or arrangements involving other materials in addition to or instead of Carbon and/or Tungsten. Alternatively, the target can be of a homogenous material but have inhomogeneities in its thickness to cater for the different electron energies. The same concept can be applied to the filter. A detector can be provided, operating in synchrony with the energy variation. Such an x-ray apparatus can form a part of a radiotherapy apparatus, in which case the first selected energy can be a diagnostic energy and a second selected energy a therapeutic energy. | ||||||
| 70 | ION ACCELERATION SYSTEM FOR HADRONTHERAPY | EP05809917.7 | 2005-10-28 | EP1847160A1 | 2007-10-24 | AMALDI, Ugo; CRESCENTI, Massimo; ZENNARO, Riccardo |
| System for ion acceleration for medical purposes comprising a conventional or superconducting cyclotron, a radiofrequency linear accelerator (Linac), a Medium Energy Beam Transport line (MEBT) connected, at the low energy side, to the exit of the cyclotron, and at the other side, to the entrance of the linear radiofrequency accelerator, as well as a High Energy Beam Transport line (HEBT) connected at high energy side to the radiofrequency linear accelerator exit and at the other end, to a system for the dose distribution to the patient. The high frequency of operation of the Linac allows for a reduced consumption and a remarkable compactness facilitating its installation in hospital structures. The use of a modular LINAC allows varying in active way the energy and the current of the therapeutic beam, having a small emittance and a time structure adapted to the dose distribution based on the technique known as the 'spot scanning'. | ||||||
| 71 | LINEAR ACCELERATOR | EP99904947.1 | 1999-02-05 | EP1053661B1 | 2002-05-29 | ALLEN, John; BRUNDLE, Leonard, Knowles; LARGE, Terry, Arthur; BATES, Terence |
| 72 | LINEAR ACCELERATOR | EP00951706.1 | 2000-08-03 | EP1201107A1 | 2002-05-02 | Allen, John; Brundle, Leonard, Knowles; Large, Terry Arthur; Bates, Terence |
| This is an improvement on our earlier application, PCT/GB99/00187. The device then disclosed allowed the variation of the coupling between two points in an RF circuit in a very simple way whilst maintaining the RF phase relationship and varying the relative magnitude of the RF fields. It was characterised by a simple single mechanical control of coupling value, that has negligible effect on the phase shift across the device. This was achieved by the simple rotation of the polarisation of a TE111 mode inside a cylindrical cavity. In this application, a slight frequency dependence on the angle of rotation is correctable by a relative excess of material located opposite the apertures between the coupling cavity and the accelerating cavities. | ||||||
| 73 | LINEAR ACCELERATOR | EP99904947.1 | 1999-02-05 | EP1053661A1 | 2000-11-22 | ALLEN, John; BRUNDLE, Leonard, Knowles; LARGE, Terry, Arthur; BATES, Terence |
| This device allows the variation of the coupling between two points in an RF circuit in a very simple way whilst maintaining the RF phase relationship and varying the relative magnitude of the RF fields. The device is characterised by a simple mechanical control of coupling value, that has negligible effect on the phase shift across the device. This is achieved by the simple rotation of the polarisation of a TE111 mode inside a cylindrical cavity. Such a device does not contain resistive elements, and the sliding mechanical surfaces are free from high RF currents. This device finds an application in standing wave linear accelerators, where it is desirable to vary the relative RF field in one set of cavities with respect to another, in order that the accelerator can operate successfully over a wide range of energies. | ||||||
| 74 | Accélérateur d'électrons à nappe | EP88401255.0 | 1988-05-24 | EP0295981B1 | 1993-01-13 | Gueguen, Jean-Pierre; N'Guyen, Annick; Pottier, Jacques |
| 75 | Accélérateur linéaire de particules chargées comportant des tubes de glissement | EP83400978.9 | 1983-05-16 | EP0094889A1 | 1983-11-23 | Pottier, Jacques |
L'invention a pour objet un accélérateur linéaire de particules chargées comportant des tubes de glissement. L'accélérateur linéaire comporte, à l'intérieur d'une enveloppe conductrice (26), des tubes de glissement (14,16) définissant entre eux des intervalles d'accélération (1), de longueur telle que, dans deux intervalles successifs, la composante longitudinale du champ électrique présente un module identique, caractérisé en ce qu'il comprend, dans chaque intervalle, au moins un tube de glissement supplémentaire (22) disposé sensiblement dans l'intervalle entre deux tubes voisins et relié électriquement à ladite enveloppe par une impédance, l'ajout de ces tubes de glissement supplémentaires (22) permettant de diminuer le diamètre des tubes de glissement et de multiplier l'impédance shunt linéique efficace de la structure de l'accélérateur. |
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| 76 | COUPLING CANCELLATION IN ELECTRON ACCELERATION SYSTEMS | US15691685 | 2017-08-30 | US20190069388A1 | 2019-02-28 | DAVID NEWSHAM |
| An electron acceleration system includes a first RF cavity, and a second RF cavity whose center is located at a distance not more than 1.5 inch from the center of the first RF cavity, along an axis. The first RF cavity has a length less than about 0.25 inches. The on-axis coupling between the first and second RF cavities along the axis, which is primarily electric, is cancelled out by an off-axis coupling between the RF cavities off the axis, which is primarily magnetic. In this way, the net RF coupling between the RF cavities is zero. The phase and amplitude of the first and second RF cavities are each independently adjustable. | ||||||
| 77 | Shielding structures for linear accelerators | US15097007 | 2016-04-12 | US10143076B2 | 2018-11-27 | Mark E. Trail; Blake H. Gaderlund |
| An apparatus includes an accelerator guide and a shielding structure enclosing the accelerator guide. The accelerator guide includes an electron source at a first end, a target at a second end, and a plurality of accelerating cavities coupled in series along a longitudinal axis between the first end and the second end. The accelerator guide has a contour as viewed in the longitudinal axis. The shielding structure has an inner wall surface defining a contour as viewed in the longitudinal axis generally conformal to the contour of the accelerator guide. | ||||||
| 78 | COMPACT LINEAR ACCELERATOR WITH ACCELERATING WAVEGUIDE | US15933257 | 2018-03-22 | US20180279461A1 | 2018-09-27 | Ronald Agustsson; Robert Berry; Salime Boucher; Josiah Hartzell; Sergey Kutsaev; Jacob McNevin; Avinash Verma |
| A linear accelerator head for use in a medical radiation therapy system can include a housing, an electron generator configured to emit electrons along a beam path, and a microwave generation assembly. The linear accelerator head may include a waveguide that is configured to contain a standing or travelling microwave. The waveguide can include a plurality of cells that are disposed adjacent one another, wherein each of the plurality of cells may define an aperture configured to receive electrons therethrough. The linear accelerator head can further include a converter and a primary collimator. | ||||||
| 79 | Source for intra-pulse multi-energy X-ray cargo inspection | US15307463 | 2015-05-14 | US09867271B2 | 2018-01-09 | Aleksandr Saverskiy |
| Methods for generating a multiple-energy X-ray pulse. A beam of electrons is generated with an electron gun and modulated prior to injection into an accelerating structure to achieve at least a first and specified beam current amplitude over the course of respective beam current temporal profiles. A radio frequency field is applied to the accelerating structure with a specified RF field amplitude and a specified RF temporal profile. The first and second specified beam current amplitudes are injected serially, each after a specified delay, in such a manner as to achieve at least two distinct endpoint energies of electrons accelerated within the accelerating structure during a course of a single RF-pulse. The beam of electrons is accelerated by the radio frequency field within the accelerating structure to produce accelerated electrons which impinge upon a target for generating Bremsstrahlung X-rays. | ||||||
| 80 | SHIELDING STRUCTURES FOR LINEAR ACCELERATORS | US15097007 | 2016-04-12 | US20170295638A1 | 2017-10-12 | Mark E. Trail; Blake H. Gaderlund |
| An apparatus includes an accelerator guide and a shielding structure enclosing the accelerator guide. The accelerator guide includes an electron source at a first end, a target at a second end, and a plurality of accelerating cavities coupled in series along a longitudinal axis between the first end and the second end. The accelerator guide has a contour as viewed in the longitudinal axis. The shielding structure has an inner wall surface defining a contour as viewed in the longitudinal axis generally conformal to the contour of the accelerator guide. | ||||||
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