| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | SUPERCONDUCTING LINEAR ACCELERATOR LOADED WITH A SAPPHIRE CRYSTAL | EP90911477.9 | 1990-07-25 | EP0436698B1 | 1996-11-27 | HAND, Louis N. |
| A dielectric loaded superconducting linear accelerator (linac) (10) is disclosed which includes an accelerating structure formed of a cylindrical sapphire crystal (14) having a centrally disposed passage (16) for reception of a particle beam (18) to be accelerated. A superconductive material layer (12), such as niobium, surrounds the exterior surface of the sapphire crystal (14). When the linac (10) is operated at a superconductive temperature of less than 2 °K, the loss tangents of the sapphire and niobium are very low so that the linac operates very efficiently. The uniform shape of the sapphire crystal (14) insures that wakefields generated by the charged particles as they pass through the linac will be minimized. The linac has a very high Q which enables it to store energy over a long period of time and reduces peak power requirements. | ||||||
| 242 | Linear accelerator operable in TE11N mode | EP92108423.2 | 1992-05-19 | EP0514832B1 | 1996-09-04 | Sawada, Kenji |
| 243 | ELECTRON ACCELERATOR HAVING A COAXIAL CAVITY | EP92909534.0 | 1992-05-27 | EP0694247A1 | 1996-01-31 | JONGEN, Yves |
| An electron accelerator having a first source (100) emitting an electron beam to be accelerated, and a coaxial cavity (5) defined by an outer cylindrical conductor (10) and an inner cylindrical conductor (20) lying on a single axis (30) and joined by two flanges (15 and 25), wherein the electron beam (1) is injected in the mid-plane (40) which is perpendicular to the axis (30) along a first diameter of the outer conductor (10). The accelerator is characterized in that it comprises a second source (200) emitting an electron beam (2) which decelerates as it passes through the coaxial cavity (5), whereby the electromagnetic field required to accelerate the electron beam (1) from the first source (100) is produced. | ||||||
| 244 | INDUSTRIAL MATERIAL PROCESSING ELECTRON LINEAR ACCELERATOR | EP93924477.0 | 1993-11-22 | EP0672332A1 | 1995-09-20 | McKEOWN, Joseph; CRAIG, Stuart, T.; DREWELL, Norbert, H.; LABRIE, Jean-Pierre; LAWRENCE, Court, B.; MASON, Victor, A.; UNGRIN, James; WHITE, Bryan, F. |
| An electron linear accelerator for use in industrial material processing, comprises an elongated, resonant, electron accelerator structure defining a linear electron flow path and having an electron injection end and an electron exit end, an electron gun at the injection end for producing and delivering one or more streams of electrons to the electron injection end of the structure during pulses of predetermined length and of predetermined repetition rate, the structure being comprised of a plurality of axially coupled resonant microwave cavities operating in the π/2 mode and including a graded-β capture section at the injection end of the structure for receiving and accelerating electrons in the one or more streams of electrons, a β = 1 section exit section at the end of the structure remote from the capture section for discharging accelerated streams of electrons from the structure and an rf coupling section intermediate the capture section and the exit section for coupling rf energy into the structure, an rf system including an rf source for converting electrical power to rf power and a transmission conduit for delivering rf power to the coupling section of the structure, a scan magnet disposed at the exit end of the structure for receiving the electron beam and scanning the beam over a predetermined product area and a controller for controlling the scanning magnet and synchronously energizing the electron gun and the rf source during the pulses. | ||||||
| 245 | Linear accelerator operable in TE11N mode | EP92108423.2 | 1992-05-19 | EP0514832A2 | 1992-11-25 | Sawada, Kenji |
In a linear accelerator which accelerates a beam of charged particles along a beam axis and which comprises a conductive cylinder (20) defining a hollow space, first through fourth conudctive vanes (21'-24') are arranged clockwise in the hollow space around the beam axis with an azimuthal interval of 90o left between two adjacent ones of the vanes and are electrically connected to the conductive cylinder so as to be excited by a TE11N mode on supply of electric power to the conductive cylinder and to induce a quadrupole electric field among the first through the fourth conductive vanes. In the TE₁₁₀ mode, first and second conductive plates (31, 32) opposite to each other are projected towards the beam axis from the cylinder to be connected to a first set of the first and the third conductive vanes and a second set of the second and the fourth conductive vanes through first and second intermediate conductive members (36, 37), respectively. In order to use the TE11N mode, first through (N+1)-th sets of the first and the second conductive plates are arranged along the beam axis to be alternately connected to the first and the second sets of the conductive vanes in two adjacent sets of the conductive plates, where N is a natural number. |
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| 246 | SUPER CONDUCTING LINEAR ACCELERATOR LOADED WITH A SAPPHIRE CRYSTAL | EP90911477.0 | 1990-07-25 | EP0436698A1 | 1991-07-17 | HAND, Louis N. |
| Accélérateur (10), composé d'une structure d'accélération formée d'un cristal de saphir cylindrique (14) muni d'une ouverture centrale (16) pour la réception du faisceau de particules (18) à accélérer. Une couche de matériau supraconducteur (12), par exemple du niobium, entoure la surface externe du cristal de saphir (14). Lorsque l'accélérateur (10) est mis en marche à une température de supraconduction inférieure à 2 °K, les tangentes des angles de perte du saphir et du niobium sont très faibles. En conséquence, l'accélérateur fonctionne très efficacement. Grâce à l'uniformité du cristal de saphir (14), les sillages produits par les particules chargées lors de leur passage par l'accélérateur sont limités au minimum. L'accélérateur a un Q très élevé qui lui permet d'accumuler de l'énergie sur une longue période et de réduire les exigences en energie de pointe. | ||||||
| 247 | Radio frequency linear accelerator control system | EP89305413.0 | 1989-05-30 | EP0345006A3 | 1990-02-14 | Fujita, Hiroyuki; Hirakimoto, Akira |
To control the power supplied to a resonant cavity of the accelerator to be always at the resonance frequency, the system consists of a signal pick-up coil (12) inserted in the resonant cavity (1,2), a voltage-controlled oscillator assembly (10,15), a phase detector (13) for detecting a phase difference between a signal picked up from the cavity (1,2) by the signal pick-up coil (12) and an output from the voltage-controlled oscillator assembly (10,15). An output from the phase detector (13) controls the voltage-controlled oscillator assembly (10,15) so as to make it oscillate at a frequency equal to a resonance frequency of the resonant cavity (1,2). |
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| 248 | QUADRUPOLE PARTICLE ACCELERATOR | EP84904176.9 | 1984-11-22 | EP0163745B1 | 1989-03-29 | SAKUDO, Noriyuki; TOKIGUCHI, Katsumi; KOIKE, Hidemi; OKADA, Osami; SAITOU, Norio; OZASA, Susumu |
| A quadrupole particle accelerator has quadrupole electrodes (22), (24), (26) and (28) having corrugated surfaces which oppose each other, and an external resonant circuit. The external resonant curcuit is constituted by capacitors which are formed by the opposing electrodes (22), (26), and (24), (28), a variable capacitor (36) provided in parallel to the capacitors, and a coil (34). The resonant frequency may be varied. The quadrupole electrodes (22), (24), (26) and (28) may be supplied with a direct current and an alternating current which are superposed. The thus arranged accelerator may be employed in an ion implantation apparatus. Thus, it becomes possible to implant a large-current ion beam on the order of several hundred keV to several MeV. | ||||||
| 249 | QUADRUPOLE PARTICLE ACCELERATOR | EP84904176.9 | 1984-11-22 | EP0163745A1 | 1985-12-11 | SAKUDO, Noriyuki; TOKIGUCHI, Katsumi; KOIKE, Hidemi; OKADA, Osami; SAITOU, Norio; OZASA, Susumu |
A quadrupole particle accelerator has quadrupole electrodes (22), (24), (26) and (28) having corrugated surfaces which oppose each other, and an external resonant circuit. The external resonant circuit is constituted by capacitors which are formed by the opposing electrodes (22), (26), and (24), (28), a variable capacitor (36) provided in parallel to the capacitors, and a coil (34). The resonant frequency may be varied. The quadrupole electrodes (22), (24), (26) and (28) may be supplied with a direct current and an alternating current which are superposed. The thus arranged accelerator may be employed in an ion implantation apparatus. Thus, it becomes possible to implant a large-current ion beam on the order of several hundred keV to several MeV. |
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| 250 | Linearbeschleuniger für geladene Teilchen | EP81102176.5 | 1981-03-23 | EP0037051B1 | 1985-01-23 | Stieber, Volker Adolf |
| 251 | Canon à électrons pour accélérateur linéaire, et structure accélératrice comportant un tel canon | EP83402408.5 | 1983-12-13 | EP0115720A1 | 1984-08-15 | Leboutet, Hubert; Aucouturier, Jeanne |
L'invention concerne un canon à électrons pour accélérateur linéaire, capable de fournir un courant électronique modulé destiné à être injecté dans une structure accélératrice (3). Un tel canon (1) à électrons comporte une cavité résonnante (13-18) dans laquelle, une cathode (8) et une grille (10) délimitent un espace grille-cathode (10-8) sur lequel est fermée cette cavité résonnante (13-18); une onde eléctromagne- tique injectée dans cette cavité résonnante (13-18), détermine entre la grille (10) et la cathode (8) une différence de potentiel alternative par laquelle est modulé le courant électronique. L'invention s'applique notamment à des machines d'irradiation industrielles. |
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| 252 | Charged particle accelerator utilizing waves in the range of one meter | EP81400295 | 1981-02-26 | EP0035445A3 | 1981-10-14 | Leboutet, Hubert |
| 253 | Linearbeschleuniger für geladene Teilchen | EP81102176.5 | 1981-03-23 | EP0037051A1 | 1981-10-07 | Stieber, Volker Adolf |
Die Erfindung bezieht sich auf einen Beschleuniger (1) für geladene Teilchen mit einer evakuierten Beschleunigerröhre (2) und einem die Beschleunigerröhre vakuumdicht abschließenden Austrittsfenster (8) für die beschleunigten Teilchen. Bei solchen Beschleunigern werden nämlich bei der Beschleunigung von Elektronen Sekundärelektronen am Austrittsfenster erzeugt, die in der Beschleunigerröhre nach Rückwärts beschleunigt werden und am gegenüberliegenden Ende der Beschleunigerröhre harte Röntgenstrahlung erzeugt. Um diese unerwünschte Röntgenstrahlung zu verhindern, sieht die Erfindung vor, daß in der Nähe des Austrittsfensters eine Vorrichtung (14, 16, 18) zur wiederholten Ablenkung des Strahles geladener Teilchen angeordnet ist. Des weiteren kann die Vorrichtung an dem dem Austrittsfenster abgewandten Ende der Beschleunigerröhre angeordnet sein und kann die Vorrichtung den Strahl geladener Teilchen kreisförmig ablenken Ein erfindungsgemäßer Beschleuniger ist insbesondere fur den Einsatz in der Strahlentherapie geeignet. |
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| 254 | ACCELERATING CAVITY AND ACCELERATOR | US16065776 | 2016-12-16 | US20190014653A1 | 2019-01-10 | Mitsuhiro YOSHIDA; Daisuke SATOH; Nobuyuki SHIGEOKA; Sadao MIURA |
| An RF accelerating cavity includes: a housing having an inner peripheral surface in a tubular shape and conductivity at least on a surface; and accelerating cells inside the housing and each made of a dielectric including, at a central part, an opening through which a charged particle passes. The housing includes a cylindrical barrel portion, with end plates at both ends. The accelerating cells are disposed between the end plates. Each accelerating cell includes: a cylindrical barrel portion having a diameter smaller than an inner diameter of the cylindrical barrel portion of the housing; and a circular disk portion provided inside the cylindrical barrel portion to be fixed to the cylindrical barrel portion, and disposed such that a plate surface is orthogonal to the passing axis of a charged particle, and provided with the opening. | ||||||
| 255 | Photonic band gap accelerator | US15376307 | 2016-12-12 | US10111316B1 | 2018-10-23 | Evgenya Simakov; Dmitry Shchegolkov |
| A preferred compact particle accelerator can include a cell arranged along a longitudinal axis along which a particle beam is accelerated. The preferred cell can include a first plate disposed substantially orthogonal to the longitudinal axis and a second plate disposed substantially parallel to the first plate. The preferred cell can also include a first set of rods connecting the first plate to the second plate and disposed at a first radius about the longitudinal axis. Preferably, the first set of rods each defines an elliptical cross section. The preferred cell can also include a second set of rods connecting the first plate to the second plate and each disposed at least at a second radius greater than the first radius. Optimized geometry of the elliptical rods and the periodicity of the rods in the lattice provide improved wakefield suppression and allow for significant gains in frequency and output. | ||||||
| 256 | Magnetic field compensation in a linear accelerator | US15450666 | 2017-03-06 | US10021774B2 | 2018-07-10 | Shmaryu M. Shvartsman; James F. Dempsey |
| A system has a linear accelerator, ion pump and a compensating magnet. The ion pump includes an ion pump magnet position, an ion pump magnet shape, an ion pump magnet orientation, and an ion pump magnet magnetic field profile. The compensating magnet has a position, a shape, an orientation, and a magnetic field profile, where at least one of the position, shape, orientation, and magnetic field profile of the compensating magnet reduce at least one component of a magnetic field in the linear accelerator resulting from the ion pump magnet. | ||||||
| 257 | CONTROLLING LINEAR ACCELERATOR | US15685963 | 2017-08-24 | US20180063939A1 | 2018-03-01 | Feng JIN; Peng ZHOU |
| A method and device for controlling a linear accelerator as well as a linear accelerating system are provided according to examples of the present disclosure. In an example, a first component of the linear accelerator is controlled to move according to a motion instruction; when it is detected that the first component reaches a first position, the first component is controlled to pause moving, and a second component of the linear accelerator is controlled to move in a preset direction; when it is detected that the second component reaches a second position, the second component is controlled to stop moving, and the first component is controlled to continue to move according to the motion instruction. | ||||||
| 258 | Linear accelerator accelerating module to suppress back-acceleration of field-emitted particles | US15260101 | 2016-09-08 | US09839114B2 | 2017-12-05 | Stephen V. Benson; Frank Marhauser; David R. Douglas; Lucas J. P. Ament |
| A method for the suppression of upstream-directed field emission in RF accelerators. The method is not restricted to a certain number of cavity cells, but requires similar operating field levels in all cavities to efficiently annihilate the once accumulated energy. Such a field balance is desirable to minimize dynamic RF losses, but not necessarily achievable in reality depending on individual cavity performance, such as early Q0-drop or quench field. The method enables a significant energy reduction for upstream-directed electrons within a relatively short distance. As a result of the suppression of upstream-directed field emission, electrons will impact surfaces at rather low energies leading to reduction of dark current and less issues with heating and damage of accelerator components as well as radiation levels including neutron generation and thus radio-activation. | ||||||
| 259 | X-ray generation | US14354299 | 2012-10-24 | US09721748B2 | 2017-08-01 | Andrei Seryi |
| An apparatus for generating x-rays includes an electron beam generator and a first device arranged to apply an RF electric field to accelerate the electron beam from the generator. A photon source is arranged to provide photons to a zone to interact with the electron beam from the first device so as to generate x-rays via inverse-Compton scattering. A second device is arranged to apply an RF electric field to decelerate the electron beam after it has interacted. The first and second devices are connected by RF energy transmission means arranged to recover RF energy from the decelerated electron beam as it passes through the second device and transfer the recovered RF energy into the first device. | ||||||
| 260 | Deflection plate and deflection device for deflecting charged particles | US14402352 | 2012-06-01 | US09589762B2 | 2017-03-07 | Peter Simon Aptaker; Paul Beasley; Oliver Heid |
| A deflection plate for deflecting charged particles, the plate comprising a recess is provided. | ||||||
