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| Number | Title | Issue Date |
| 7741781 | Radio-frequency accelerating cavity and circular accelerator An RF accelerating cavity includes an accelerating cavity unit and an inductance varying device having a magnetic member connected parallel to an acceleration electrode gap. The RF accelerating cavity is tuned in such a fashion that a charged particle beam accelerat... | 06/22/2010 |
| 7619363 | Electronic energy switch An energy switch for use in a radiation system includes an element located within a structure having a cavity, the element capable of being biased by a magnetic field, and a device for generating the magnetic field to thereby bias the element. An energy switch for u... | 11/17/2009 |
| 7423381 | Particle accelerator and methods therefor Standing-wave linear accelerators (linac) having a plurality of accelerating cavities and which do not have any auxiliary cavities are provided. Such linacs are useful for industrial applications such as radiography, cargo inspection and food sterilization, and also... | 09/09/2008 |
| 7414355 | Charged particle beam extraction and formation apparatus A charged particle apparatus, with multiple electrically conducting semispheric grid electrodes, the grid electrodes mounted in a dielectric mounting ring, with hidden areas or regions to maintain electrical isolation between the grid electrodes as sputter deposits ... | 08/19/2008 |
| 7400094 | Standing wave particle beam accelerator having a plurality of power inputs A device for generating a particle beam includes a particle source, and a structure having a first section and a second section, the first section coupled to the particle source, the first section having a first power input, and the second section having a second po... | 07/15/2008 |
| 7400093 | Standing wave particle beam accelerator A method for generating an electron beam includes prescribing a location, and generating an envelope of electrons, the envelope having a waist, wherein the generating is performed such that the waist of the envelope is at or adjacent to the prescribed location. A de... | 07/15/2008 |
| 7394201 | Field emission cathode gating for RF electron guns and planar focusing cathodes A novel method of gating electron emission from field-emitter cathodes for radio frequency (RF) electrode guns and a novel cathode that provides a focused electron beam without the need for magnetic fields or a curved cathode surface are provided. The phase and stre... | 07/01/2008 |
| 7351963 | Multiple rod systems produced by wire erosion The invention relates to a method of creating multipole systems carrying RF voltage which can be used as ion guides, mass-selective quadrupole filters or collision cells to fragment ions; and multipole systems manufactured according to this method. The invention pro... | 04/01/2008 |
| 7348569 | Acceleration of charged particles using spatially and temporally shaped electromagnetic radiation A method and apparatus for accelerating charged particles are disclosed, wherein the method comprises using at least a transverse component of a temporally and spatially shaped electromagnetic field to accelerate one or more charged particles. ... | 03/25/2008 |
| 7339320 | Standing wave particle beam accelerator An accelerator for accelerating a particle beam includes a main body having a plurality of electromagnetic cavities coupled in series, and a first coupling body having a first side cavity coupled to one of the electromagnetic cavities through a first opening, and to... | 03/04/2008 |
| 7336764 | Electron beam accelerator and ceramic stage with electrically-conductive layer or coating therefor A ceramic electron beam accelerator is disclosed finding particularly efficacious uses in X-ray electronic circuit imaging and testing applications. The ceramic stage design eliminates the need for placing metal reinforcements between adjoining stages of the acceler... | 02/26/2008 |
| 7317192 | High energy polyenergetic ion selection systems, ion beam therapy systems, and ion beam treatment centers Devices and methods are provided for generating laser-accelerated high energy polyenergetic positive ion beams that are spatially separated and modulated based on energy level. The spatially separated and modulated high energy polyenergetic positive ion beams are us... | 01/08/2008 |
| 7315140 | Cyclotron with beam phase selector Disclosed here is a cyclotron having a beam phase selector capable of controlling phase widths of beams and improving beam permeability for increasing beam current. The cyclotron contains an acceleration voltage applying section and a beam blocking section, at least... | 01/01/2008 |
| 7312461 | Laparoscopic tumor therapy using high energy electron irradiation A laparoscopic tumor therapy method and an articulated electron beam transport system are provided for use with a high power, long focus electron source for tumor therapy. The high power, long focus electron source generates an e-beam. The e-beam is transported thro... | 12/25/2007 |
| 7276708 | Diagnostic resonant cavity for a charged particle accelerator Disclosed is a diagnostic resonant cavity for determining characteristics of a charged particle beam, such as an electron beam, produced in a charged particle accelerator. The cavity is based on resonant quadrupole-mode and higher order cavities. Enhanced shunt impe... | 10/02/2007 |
| 7262565 | Spiral orbit charged particle accelerator and its acceleration method According to the present invention, a non-isochronous magnetic field distribution in which the magnetic field increases as the radius increases is formed and a distribution of fixed-frequency accelerating RF voltage is formed, said non-isochronous magnetic field dis... | 08/28/2007 |
| 7262566 | Standing-wave electron linear accelerator A particle accelerator system, including apparatuses and methods, for producing a beam of bunched charged particles at high intensities and with minimal energy dispersion comprises a bunching section having a plurality of bunching cavities, an accelerating section h... | 08/28/2007 |
| 7253572 | Electromagnetic induced accelerator based on coil-turn modulation An electromagnetic induced accelerator based on coil-turn modulation, including inner and outer cylinders with different diameters, the cylinders being coaxially disposed to form a channel which is a spatial portion therebetween; a discharging coil wound spirally in... | 08/07/2007 |
| 7242158 | Distributed RF sources for medical RF accelerator Some embodiments include an accelerator waveguide having a plurality of cavities, and at least two RF power sources, each of the at least two RF power sources being separately coupled to a respective one of the plurality of cavities. ... | 07/10/2007 |
| 7239095 | Dual-plunger energy switch A dual-plunger energy switch assembly for standing wave linear particle beam accelerators capable of operating in a higher energy mode and a lower energy mode employs two mechanical plungers that can be extended different distances inside two side cavities of the li... | 07/03/2007 |
| 7227434 | Tuning screw assembly The present invention relates to a tuning screw assembly comprising a sleeve (100) with internal threads for engaging a tuning screw (200) having external threads. The sleeve comprises a first threaded portion (32) which is axially displaced in ... | 06/05/2007 |
| 7208889 | Particle accelerator having wide energy control range A particle accelerator system for producing a charged particle beam having pulses of charged particles that have different energy levels from pulse to pulse. The system enables independent adjustment of the RF power delivered to first and second accelerating section... | 04/24/2007 |
| 7208890 | Multi-section particle accelerator with controlled beam current A particle accelerator system, including apparatuses and methods, that is configurable through repositioning of shorting devices therein to operate at different charged particle beam currents while maintaining optimum transfer of electromagnetic power from electroma... | 04/24/2007 |
| 7206379 | RF accelerator for imaging applications The present invention is an RF cavity for accelerating electrons in imaging applications such as x-ray tubes and CT applications. An RF cavity having electron emitters placed therein accelerates the electrons across the cavity. The geometric shape of the cavity dete... | 04/17/2007 |
| 7167540 | Device for irradiating tissue The invention relates to a device (1) for irradiating tissue, especially tumors. The device comprises one radiation source (2) (accelerator), the primary radiation (6) thereof leading to at least one radiation head (3). The radiation sour... | 01/23/2007 |
| 7164821 | Tunable resonant cavity based on the field effect in semiconductors The index of refraction of waveguide structures can be varied by altering carrier concentration. The waveguides preferably comprise semiconductors like silicon that are substantially optically transmissive at certain wavelengths. Variation of the carrier density in ... | 01/16/2007 |
| 7157868 | Linear accelerator A linear accelerator comprises a series of accelerating cavities, adjacent pairs of which are coupled via coupling cavities, in which at least one coupling cavity comprises a rotationally asymmetric element that is rotateable thereby to vary the coupling offered by ... | 01/02/2007 |
| 7151347 | Passivated niobium cavities A niobium cavity exhibiting high quality factors at high gradients is provided by treating a niobium cavity through a process comprising: 1) removing surface oxides by plasma etching or a similar process; 2) removing hydrogen or other gases absorbed in the bulk niob... | 12/19/2006 |
| 7151255 | Travelling field for packaging ion beams The invention relates to a device and a method for producing, from any previously configured ion beams, precisely localized small packages of ions which all fly at the same velocity. The invention consists of damping the ions in a damping-gas filled series of apertu... | 12/19/2006 |
| 7138771 | Apparatus for pre-acceleration of ion beams used in a heavy ion beam application system 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 alter... | 11/21/2006 |
| 7130371 | System for alternately pulsing energy of accelerated electrons bombarding a conversion target A RF linear electron accelerator system for generating a beam of accelerated electrons bunched in pulses having different energy spectra from pulse to pulse. The system is operable to generate a beam of high energy X-rays from such beam of accelerated electrons, usi... | 10/31/2006 |
| 7116064 | Axisymmetric emittance-compensated electron gun An electron gun includes a cathode, a cavity, and an energy input. The cavity resonates at a particular frequency, and the cathode generates an electron beam along its longitudinal axis when driven by resonant electromagnetic radiation of the particular frequency. T... | 10/03/2006 |
| 7112924 | Electronic energy switch for particle accelerator Some embodiments include an accelerator waveguide to receive RF power, the accelerator waveguide comprising a side cavity, an element fixedly disposed within the side cavity, and a device coupled to the element, wherein the device and the element are operable to con... | 09/26/2006 |
| 7110500 | Multiple energy x-ray source and inspection apparatus employing same A multiple energy x-ray source capable of rapidly generating and delivering x-rays in the form of successive pulses that alternate between at least two different energy levels, as well as a multiple energy x-ray inspection apparatus for inspecting moving objects tha... | 09/19/2006 |
| 7106004 | All cavity magnetron axial extractor An axial extractor to efficiently extract microwave power from any magnetron. The axial extractor is both more compact and offers improved overall performance compared to the prior art. The axial extractor allows for suppression of the parasitic magnetron 0 mode, lo... | 09/12/2006 |
| 7098615 | Radio frequency focused interdigital linear accelerator An interdigital (Wideröe) linear accelerator employing drift tubes, and associated support stems that couple to both the longitudinal and support stem electromagnetic fields of the linac, creating rf quadrupole fields along the axis of the linac to provide transver... | 08/29/2006 |
| 7081723 | Drift tube accelerator for the acceleration of ion packets The invention relates to a drift tube accelerator (1) for the acceleration of ion packets in ion beam acceleration systems, wherein a housing (2) consists of a longitudinally divided three-part vacuum tank (3) having a central unit (4) an... | 07/25/2006 |
| 7030398 | Laser driven ion accelerator A system and method of accelerating ions in an accelerator to optimize the energy produced by a light source. Several parameters may be controlled in constructing a target used in the accelerator system to adjust performance of the accelerator system. These paramete... | 04/18/2006 |
| 7030600 | Broadband microwave power sensor A circuit for sensing radio frequency energy. The circuit includes a Wheatstone bridge having at least one element thereof thermally responsive to the radio frequency energy passing therethough differently from radio frequency energy passing though at least one othe... | 04/18/2006 |
| 7012386 | Enhanced RF window for waveguide used with particle accelerator An RF window and a method of manufacture of the RF window are provided. The RF window of the invention has very low reflected RF power. The RF window includes a center sleeve assembly including a ceramic disc mounted within a copper sleeve. The ceramic disc has oppo... | 03/14/2006 |
