Class / Patent application number | Description | Number of patent applications / Date published |
315501000 |
Magnetic field acceleration means
| 135 |
315506000 |
Electrostatic accelerator means
| 19 |
315507000 |
With injection or extraction means | 4 |
20090256501 | CIRCULAR ACCELERATOR - In a circular accelerator, a magnetic pole edge portion of a bending electromagnet into and from which a charged particle beam enters and exits is provided with endpacks. A first protrusion is provided at that part of each end pack which is radially outside the equilibrium orbit of a center energy beam, while a second protrusion is provided at that part of each end pack which is radially inside the equilibrium orbit of the center energy beam. The shapes of the first and second protrusions are set so that the betatron oscillation numbers of beams of different acceleration energies may be held constant or become linear to the energies. In case of emitting the charged particle beam out of the circular accelerator, the change of a tune attributed to the change of the beam orbit can be statically corrected, the tune is linearly changed, and an adjustment of the emission of the beam becomes easy. | 10-15-2009 |
20100148705 | METHOD OF DRIVING AN INJECTOR IN AN INTERNAL INJECTION BETATRON - A betatron magnet, the betatron magnet comprising at least one electron injector positioned approximate an inside of a radius of an betatron orbit, such that electrons are injected into the betatron orbit with the at least one electron injector positioned within an electron acceleration passageway, whereby the electron acceleration passageway is located within a vacuum chamber; and wherein the at least one electron injector is driven with an inductive means. | 06-17-2010 |
20110062899 | HALL EFFECT THRUSTER WITH COOLING OF THE INTERNAL CERAMIC - The invention relates to the field of Hall effect thrusters. The invention provides a Hall effect thruster having a discharge channel of annular shape extending along an axis, the discharge channel being defined by an outer wall of annular shape and an inner wall of annular shape situated inside the space defined by the outer wall, a cathode situated outside the discharge channel, and an injector system situated at the upstream end of the discharge channel and also forming an anode, the downstream end of the discharge channel being open, wherein the thruster includes a heat sink device comprising a heat sink in contact with the inner wall and of thermal conductivity that is greater than the thermal conductivity of the inner wall, the heat sink being a sleeve and the heat sink device being suitable for discharging heat from the inner wall to the outside of the thruster so as to reduce the temperature difference between the inner wall and the outer wall. | 03-17-2011 |
20110248651 | TEMPERATURE STABILIZED MICROWAVE ELECTRON GUN - The temperature rise due to the backstreaming electrons is canceled by an equal and opposite fall in temperature at the surface of the cathode due to the conduction of heat deposited at the surface immediately prior to the microwave pulse by a pulsed laser focused to uniformly illuminate the cathode surface. Variations in temperature across the surface of the cathode attributable to the non-uniform spatial distribution of the backstreaming electrons may be compensated using a second laser pulse fired during the RF pulse to maintain constant thermal power input across the surface of the cathode during the RF pulse. This second pulse can also be used to compensate for the time-dependent rate of decay of temperature due to conduction of the heat deposited by the first laser into the body of the cathode. | 10-13-2011 |
Entries |
Document | Title | Date |
20100066273 | COPPER/NIOBIUM COMPOSITE PIPING MATERIAL PRODUCED BY COPPER ELECTROFORMING, PROCESS FOR PRODUCING THE SAME AND SUPERCONDUCTING, ACCELERATION CAVITY PRODUCED FROM THE COMPOSITE PIPING MATERIAL - In order to produce industrially advantageously an electroformed copper/niobium composite piping material wherein an electroformed copper layer and a niobium thin piping material are strongly bonded to each other, the electroformed copper/niobium composite piping material can be produced by coating any one or each of the outer peripheral surface and the inner peripheral surface of a niobium thin piping material with a nickel thin film, coating the surface of the nickel thin film with copper by electroforming, and subsequently annealing the resultant. | 03-18-2010 |
20110273115 | LASER ACCELERATION SYSTEM FOR GENERATING MONOENERGETIC PROTONS - A proton acceleration system is provided for accelerating protons within a target. The system includes a laser source generating a laser beam having a wavelength λ | 11-10-2011 |
20110304283 | High Average Current, High Quality Pulsed Electron Injector - An electron injector including an electron source and a conducting grid situated close to the electron source, one or more RF accelerating/bunching cavities operating at the same fundamental RF frequency; a DC voltage source configured to bias the cathode at a small positive voltage with respect to the grid; a first RF drive configured to apply an RF signal between the cathode and grid at the fundamental and third harmonic RF frequencies; and a second RF drive configured to apply an RF drive signal to the accelerating/bunching cavities. Electrons are emitted by the cathode and travel through the grid to the accelerating/bunching cavities for input into an RF linac. The first RF drive applies a first RF drive signal at the fundamental frequency of the linac plus higher harmonics thereof to the gap between the cathode and the grid to cause the emitted electrons to form electron bunches and the second RF drive applies a second RF drive signal to the accelerating/bunching cavities on the other side of the grid to further accelerate and optimize the size of the electron bunches. Because the applied RF signals contain at the fundamental linac frequency, the electrons are bunched at that frequency and each RF bucket of the linac is filled with an electron bunch. | 12-15-2011 |
20120068631 | CHARGED PARTICLE BEAM RADIATION CONTROL DEVICE AND CHARGED PARTICLE BEAM RADIATION METHOD - Provided is a charged particle beam radiation control device that controls radiation of a charged particle beam, the charged particle beam radiation control device including: a controller which controls an acceleration voltage for accelerating charged particles, wherein the controller includes a set acceleration voltage controller which selects a non-radiation state of a charged particle beam by setting an acceleration voltage of a radiation state of the charged particle beam to a reference acceleration voltage and changing the acceleration voltage to a set acceleration voltage larger or smaller than the reference acceleration voltage. | 03-22-2012 |
20120068632 | Cascade Accelerator - A cascade accelerator ( | 03-22-2012 |
20140070732 | Dielectric laser electron accelerators - A laser-driven dielectric electron accelerator is composed of a dielectric photonic crystal accelerator structure having an electron beam channel and buried grating whose elements are arranged linearly parallel to the electron beam channel. The accelerator structure preferably has a thin film material coating. The grating may have an asymmetric structure. The accelerator and undulator structures may be integrated with on-chip optical and electronic devices such as waveguide devices and control circuits so that multiple devices can be fabricated on the same chip. | 03-13-2014 |
20150042244 | HF Resonator and Particle Accelerator with HF Resonator - An HF resonator has a cylindrical cavity made of a dielectric material. The cavity includes a first cylindrical portion, a second cylindrical portion, and a dielectric ring that connects the first portion and the second portion. The inner face of the first cylindrical portion has an electrically conductive first inner coating. An inner face of the second cylindrical portion has an electrically conductive second inner coating. An electrically conductive first enclosed coating is arranged between the first cylindrical portion and the dielectric ring. An electrically conductive second enclosed coating is arranged between the second cylindrical portion and the dielectric ring. The first enclosed coating is conductively connected to the first inner coating. The second enclosed coating is conductively connected to the second inner coating. The HF resonator includes a device that is provided for applying a high-frequency electric voltage between the first enclosed coating and the second enclosed coating. | 02-12-2015 |