| 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 | CIRCULAR ACCELERATION APPARATUS, ELECTROMAGNETIC WAVE GENERATOR AND ELECTROMAGNETIC-WAVE IMAGING SYSTEM | US11860965 | 2007-09-25 | US20080079372A1 | 2008-04-03 | Hirofumi TANAKA; Takahisa Nagayama; Nobuyuki Zumoto |
| An objective is to provide a circular acceleration apparatus that can accelerate higher currents as well as avoid complex controlling of a deflecting magnetic field generated by an electron deflection unit. The circular acceleration apparatus is provided, which comprising a circular accelerator 2 including an electron acceleration unit 13 and a deflection-magnetic-field generating unit 14; an electron generator 1, to which a pulsed voltage is applied, to generate electrons for injecting to the circular accelerator 2; and a circuit element which generates the pulsed voltage for providing to the electron generator 1 by making the pulsed voltage applied to the electron generator 1 have at least one of a slow rising edge and a slow falling edge. | ||||||
| 62 | Electron injection in ion implanter magnets | US11281175 | 2005-11-17 | US20060169912A1 | 2006-08-03 | Anthony Renau; Donna Smatlak; James Buff; Eric Hermanson |
| One or more electron sources are utilized to inject electrons into an ion beam being transported between the polepieces of a magnet. In some embodiments, the electron sources are located in cavities in one or both polepieces of the magnet. In other embodiments, a radio frequency or microwave plasma flood gun is located in a cavity in at least one of the polepieces or between the polepieces. | ||||||
| 63 | Apparatus for pre-acceleration of ion beams used in a heavy ion beam applications system | US10470445 | 2002-02-05 | US06855942B2 | 2005-02-15 | 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). | ||||||
| 64 | Apparatus for generating and selecting ions used in a heavy ion cancer therapy facility | US10470464 | 2003-11-12 | US06809325B2 | 2004-10-26 | 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. | ||||||
| 65 | Apparatus for pre-acceleration of ion beams used in a heavy ion beam applications system | US10470445 | 2003-12-09 | US20040084634A1 | 2004-05-06 | 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). | ||||||
| 66 | Magnetic containment system for the production of radiation from high energy electrons using solid targets | US09722097 | 2000-11-24 | US06545436B1 | 2003-04-08 | Charles K. Gary |
| The present invention includes a magnetic storage ring into which electrons or other charged particles can be injected from a point external to the ring and still subscribe a path, after injection, contained within the magnetic storage ring. The magnetic storage ring consists of purely static (permanent) magnetic fields. The particles pass one or more times through a solid target that causes the high energy charged particles to emit radiation and damps the momentum of the particles, so that they cannot escape the magnetic field, allowing them to be captured therein. | ||||||
| 67 | Circular accelerator, method of injection of charged particles thereof, and apparatus for injection of charged particles thereof | US470478 | 1995-06-06 | US5600213A | 1997-02-04 | Kazuo Hiramoto; Junichi Hirota; Kenji Miyata; Masatsugu Nishi |
| The present invention is to provide a method and an apparatus which are able to inject a large amount of charged particles to a circular accelerator. In order to inject a large number of charged particles, the charged particle beams are injected into a region of a vacuum duct other 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. | ||||||
| 68 | Circular accelerator and a method of injecting beams therein | US302384 | 1994-09-08 | US5436537A | 1995-07-25 | Kazuo Hiramoto; Junichi Hirota; Masatsugu Nishi |
| A circular accelerator for charged particles in which by accelerated damping of the betatron oscillation, that is, a rapid reduction in a beam size through enhancing the radiation damping after the beam injection, a short period of time injection can be accomplished, and also a large current is capable of being stored through repetition of such beam injections. | ||||||
| 69 | Injection system for tandem accelerators | US695941 | 1991-05-06 | US5247263A | 1993-09-21 | Kenneth H. Purser |
| An injection system for a tandem accelerator with equal transmission efficiency over a broad energy range includes means for shielding the injected ion beam from the electric field within the grounded end of the low-energy acceleration tube and injecting the ion beam into the low-energy acceleration tube sequentially through a narrow acceleration gap and the shielded region. | ||||||
| 70 | Electron storage ring | US371031 | 1989-06-26 | US5001437A | 1991-03-19 | Kenji Miyata; Masatsugu Nishi; Shunji Kakiuchi |
| An electron storage ring has bending magnets, quadrupole magnets, and sextupole magnets arranged in a ring for constraining a beam of electrons along a path. When the beam is injected, a control means controls a power source for the magnet so that the beam has a high equilibrium emittance. This gives the beam a large dynamic aperture, simplifying beam injection. Once the beam has been injected, the field strengths of the magnets are varied to cause a reduction in the emittance to a low value, at which the beam is stored. Synchrotron radiation is generated which has a high brightness because the low emittance means the beam has a small diameter. During the reduction in equilibrium emittance, the betatron oscillation frequency is maintained on a stable operation region and the chromaticity is maintained substantially zero. | ||||||
| 71 | Electron accelerator of the microtron type | US306067 | 1989-02-06 | US4990861A | 1991-02-05 | Gerardus J. Ernst; Wilhelmus J. Witteman |
| An electron accelerator of the microtron type, housing a vacuum chamber with two spaced apart, nearly parallel, flat pole pieces, between which a static, substantially homogeneous magnetic field is maintainable, a microwave resonating cavity interposed between the pole pieces, a source for supplying electrons and injecting them into the accelerator, said electrons moving in circular orbits in a plane parallel to the pole pieces under the influence of the homogeneous magnetic field and undergoing acceleration at each crossing of the microwave resonating cavity, as well as a device for withdrawing the electrons from the accelerator after they have been sufficiently accelerated, said source for injecting electrons ensuring source of electrons through one of the pole pieces, at an angle to the circular orbits of the electrons, and including a deflecting magnet interposed between the pole pieces for deflecting the injected beam into the plane of the circular orbits of the electrons. | ||||||
| 72 | Funnel for ion accelerators | US111017 | 1987-10-20 | US4780682A | 1988-10-25 | Peter A. Politzer |
| A funnel for an ion accelerator comprises a magnetic lens in operative association with a resonator. Ions from different sources are accelerated to different predetermined energy levels and are separately aimed at the lens where the incoming ions are deflected into alignment along a common path. The resonator receives ions from the lens and respectively accelerates or decelerates ions having relatively lower or higher energy levels to establish a beam of ions having substantially the same energy level. | ||||||
| 73 | Plasma assisted modified betatron | US807300 | 1985-12-10 | USH290H | 1987-06-02 | Wallace M. Manheimer |
| In a modified Betatron a low density background plasma is maintained in the vacuum chamber causing image charges in response thereto to form in the chamber wall. These image charges cause the self forces of the electron beam being accelerated in the betatron to be directed inward in the polodial plane thus eliminating injection problems, the diamagnetic to paramagnetic transition, and the l=2 resistive wall instability. | ||||||
| 74 | Cyclotron internal ion source with dc extraction | US45639274 | 1974-03-29 | US3867705A | 1975-02-18 | HUDSON ED D; LORD RICHARD S; MALLORY MERRIT L |
| An apparatus is provided for increasing the intensities of heavy ion beams accelerated in isochronous cyclotrons at high harmonics (5th harmonic or greater) of the orbit frequency. The small intensities normally obtained at high harmonics are significantly increased by the addition of a dc ion extraction system to the cyclotron ion source. Use of the dc extraction system has increased beams of 40Ar3 on the 5th harmonic and 20Ne1 on the 7th harmonic from nanoamperes to microamperes.
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| 75 | Crossed-field electron injector for an electron accelerator | US3593058D | 1970-03-17 | US3593058A | 1971-07-13 | HOGG HAROLD A |
| An electron injector wherein a stream of electrons is emitted from a gridded thermionic emitter into a region between two electrodes. An electric field alternating at a microwave frequency is applied between the electrodes, and the electron stream leaves the thermionic emitter parallel to this field. A steady magnetic field is applied across the region in a direction that is transverse to the electric field. The combined effects of the microwave electric field and the steady magnetic field on the electron stream are such that the stream becomes focused into a bunch that follows a quasi-cycloidal orbit in which the electrons strike a secondary emitter from which an amplified bunch of electrons is emitted to follow a similar orbit, to be further focused into a bunch and to strike another secondary emitter. This process is repeated until the desired intensity is achieved whereupon the final bunch of electrons is injected into an electron accelerator during the final orbit.
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| 76 | Charged particle phase bunching apparatus | US33785564 | 1964-01-15 | US3359500A | 1967-12-19 | YASUTSUGU TAKEDA; AKIJI MAEKAWA |
| 77 | Multiple-beam injector for magnetic induction accelerators | US27359163 | 1963-04-17 | US3260877A | 1966-07-12 | LUCAS CARL M |
| 78 | Producing bunched electron beams | US71442658 | 1958-02-10 | US2993141A | 1961-07-18 | POST RICHARD F |
| 79 | CIRCULAR ACCELERATOR | US16341072 | 2017-03-24 | US20190239333A1 | 2019-08-01 | Takamichi AOKI |
| Provided is a variable energy and miniaturized accelerator. It is impossible to change the energy of the extraction beam in the related cyclotron or to miniaturize an accelerator in the related synchrotron. The accelerator includes a pair of magnets which form a magnetic field therebetween; an ion source which injects ions between the magnets; an acceleration electrode which accelerates the ions; and a beam extraction path which extracts the ions to the outside. A plurality of ring-shaped beam closed orbits formed by the pair of magnets, in which the ions of different energies respectively circulate, are aggregated on one side. The frequency of the radiofrequency electric field fed to the ions by the acceleration electrode is modulated by the beam closed orbits. | ||||||
| 80 | CYCLOTRON RF RESONATOR TUNING WITH ASYMMETRICAL FIXED TUNER | US15399528 | 2017-01-05 | US20180192506A1 | 2018-07-05 | Fabian KLARNER |
| Embodiments of the present invention disclose methods and systems for performing particle acceleration using a cyclotron RF resonator with an asymmetrical fixed tuner. A cyclotron RF resonator includes a single shorting plate tuner inside and a fixed short stem, and does not require top-bottom mirror symmetry. Small movements in relation to the wavelengths of the maximum acceleration voltage is bound by the capacitance of the accelerating surfaces. As such, the resonator may perform particle acceleration using asymmetrical tuning to reduce design complexity, cost of maintenance, fabrication and installation complexity, failure rate, and software complexity (e.g., control software), for example. | ||||||
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