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7619373 |
Selectable frequency light emitter
We describe an ultra-small resonant structure that produces electromagnetic radiation (e.g., visible light) at selected frequencies. The resonant structure can be produced from any conducting...
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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...
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7609009 |
Linear ion accelerator
The electrode lengths of a plurality of electrodes linearly arranged in an acceleration cavity are proportional to the velocity of a traveling ion beam. Further, the electrode length is so...
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7605377 |
On-chip reflectron and ion optics
A microelectronics apparatus comprising a substrate, a pair of grid electrodes coupled to the substrate on opposing sides of a central axis, wherein the grid electrodes are substantially parallel...
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7586264 |
Collector cooling arrangement
A cooling arrangement for an electron collector of an electron beam tube has a plurality of solid dielectric spacers surrounding the corrector with an electrically insulative and thermally...
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7586097 |
Switching micro-resonant structures using at least one director
When using micro-resonant structures, it is possible to use the same source of charged particles to cause multiple resonant structures to emit electromagnetic radiation. This reduces the number of...
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7579778 |
Traveling-wave tube with integrated ion trap power supply
A traveling-wave tube system and a method for protecting a cathode of a traveling-wave tube system. The system has an electron gun and a power supply that applies an electric potential between a...
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7579779 |
Pivotable magnetic assembly for allowing insertion or removal of a linear beam tube
An electron beam tube device has a magnetic frame with the top part being pivotable so as to pivot from a closed position in which the top part, including an electromagnetic coil covers the...
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7576339 |
Ion implantation apparatus and method for obtaining non-uniform ion implantation energy
An ion implantation apparatus includes an ion beam source for generating an ion beam; an implantation energy controller disposed on a path of the ion beam for controlling the ion implantation...
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7556749 |
Electron source
To provide an electron source to be used for a surface analyzer such as a scanning or transmission electron microscope or an Auger electron spectroscope, or an electron beam lithography machine,...
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7554106 |
Partial ion implantation apparatus and method using bundled beam
An ion implantation apparatus comprises an ion beam source for generating an initial ion beam, a bundled ion beam generator adapted to change the initial ion beam into a bundled ion beam based on a...
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7541755 |
Inductive load broadband RF system
Many applications in scientific experimentation or industrial production require the generation and shaping of charged particle bunches. A particle bunch shaper can use less expensive and smaller...
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7477019 |
Electron beam tubes
An electron beam tube ( 17 ) having a longitudinal axis comprises a first component, such as a ceramic wall ( 5 ) and a second component such as a drift tube assembly having a mounting plate ( 3 )....
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7474148 |
Amplifier comprising an electronic tube provided with collectors biased by at least two DC bias sources
An amplifier including an electronic tube with an axial electron beam, provided with a cathode and at least two collectors, and at least two sources of DC voltage. Each collector is connected to a...
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7471053 |
Multi-beam klystron apparatus
The present invention provides a multi-beam klystron apparatus. In the above-described multi-beam klystron apparatus, the magnetic field generating element of the electron-gun-unit-side magnetic...
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7456577 |
Micro-wave tube with mechanical frequency tuning
This invention relates to a microwave tube ( 3 ) for generation of an electromagnetic wave with frequency F, the tube comprises mechanical means for varying the frequency F composed of a set of...
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7453076 |
Bi-polar treatment facility for treating target cells with both positive and negative ions
A system for treating target cells with both positive and negative ions comprises a bi-polar beam delivery system configured to create and deliver both positive ion beams and negative ion beams....
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7446478 |
Klystron amplifier
A klystron has a plurality of electron beam paths and plural damped disc-shaped cavities. The plurality of electron beam paths cut the cavities and the Klystron amplifier further comprises an...
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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...
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7417376 |
Linear electron beam tube having a dome shape RF window
An electron beam tube device such as an inductive output tube of the integral cavity type has a RF window which re-enters the interaction space within the cavity thereby defining a space that is...
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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...
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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...
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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...
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7368874 |
Dynamic depressed collector
A biasing system for use with a multi-stage depressed collector of a high power amplifier includes one or more adjustable power sources. A power controller provides control signals to the power...
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7365493 |
Device for producing high frequency microwaves
A device is proposed for producing high-frequency microwaves, having a cathode arrangement with heatable cathodes for emitting electrons, two grating arrangements for controlling and focusing the...
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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...
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7315141 |
Method for the production of wideband THz radiation
A method for the production of extremely wide bandwidth THz radiation comprising: delivering an electron beam from a source to an undulator that does not deflect the angle or transversely move the...
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7315126 |
Folded waveguide traveling wave tube having polepiece-cavity coupled-cavity circuit
An amplifying device comprises an electron gun emitting an electron beam, a collector spaced from the electron gun, the collector oriented to collect electrons of the electron beam emitted from the...
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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...
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7285915 |
Electron gun for producing incident and secondary electrons
An electron gun. The electron gun includes an RE cavity having a first side with an emitting surface and a second side with a transmitting and emitting section. The gun also includes a mechanism...
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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...
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7268361 |
Electron emission device
The invention provides an electron beam device 1 comprising at least one field emission cathode 3 and at least one extracting electrode 5 , whereby the field emission cathode 5 comprises a...
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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...
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7262564 |
Electrostatic fluid accelerator for and a method of controlling fluid flow
An electrostatic fluid acceleration and method of operation thereof includes at least two synchronously powered stages. A single power supply or synchronized and phase controlled power supplies...
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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...
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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...
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7230385 |
Collector arrangement
A collector for an electron beam tube comprises a plurality of electrode stages. The electrode stages are spaced from one another by a non-conductive spacer. The non-conductive spacer is located...
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7218053 |
Electron beam tube output arrangement
An electron beam tube of the type for amplification of RF signals comprising an electron gun, an interaction region within a vacuum, an RF input and an RF output arrangement, the RF output...
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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...
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7202605 |
Electron beam tube apparatus having a common output combining cavity
An electron beam tube apparatus comprises a plurality of electron beam tubes having a common output cavity. Power is coupled to the common cavity from the resonant cavities of the beam tubes, and...
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7196601 |
Temperature correction of wigglers and undulators
An undulator includes a periodic arrangement of magnets to produce a periodic spatial magnetic field distribution in a magnetic gap defined by the magnets. The undulator further includes a...
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7187130 |
Electron beam tubes including a vacuum envelope seal and having a metallized balance ring
A linear electron beam tube comprises an electron gun having a cathode and a grid, and an anode arranged in a first portion of a drift tube. The drift tube is within a vacuum envelope and has first...
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7183564 |
Channel spark source for generating a stable focused electron beam
In a channel spark source triggered by gas discharge for generating a stable focused electron beam, a gas supply for a hollow cathode thereof is provided which generates in the hollow cathode a...
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7176641 |
Cathode ray tube
A heat generating portion of a heater which is incorporated in an indirectly heated cathode structure of an electron gun for a cathode ray tube is formed by joining a first winding portion and a...
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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...
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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...
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7145297 |
L-band inductive output tube
An inductive output tube (IOT) operates in a frequency range above 1000 MHz. An output window may be provided to separate a vacuum portion of the IOT from an atmospheric pressure portion of the...
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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...
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7129807 |
Undulator and method of operation thereof
In an undulator for the generation of synchrotron radiation from a particle beam introduced into the undulator, two partial undulators are provided each comprising a conductor of superconductive...
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7116051 |
Multibeam klystron
A multibeam, electrostatically focused klystron includes a plurality of conductive members, ones of which are recessed to provide input and output sections of microwave cavities, wherein focusing...
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