| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | CHARGED PARTICLE ACCELERATORS, RADIATION SOURCES, SYSTEMS, AND METHODS | US14710202 | 2015-05-12 | US20160345418A1 | 2016-11-24 | David WHITTUM; James E. CLAYTON; George MERDINIAN |
| Man-portable radiation generation sources and systems that may be carried by hand to a site of interest by one or two people, are disclosed. Methods of use of such sources and systems are also disclosed. Battery operated radiation generation sources, air cooled radiation generation sources, and charged particle accelerators, are also disclosed. A radiation generation source, a radiation scanning system, and a target assembly comprising target material having a thickness of less than 0.20 mm are also disclosed. | ||||||
| 82 | Methods for controlling standing wave accelerator and systems thereof | US14487960 | 2014-09-16 | US09491842B2 | 2016-11-08 | Huaibi Chen; Jianping Cheng; Shuxin Zheng; Jiaru Shi; Chuanxiang Tang; Qingxiu Jin; Wenhui Huang; Yuzheng Lin; Dechun Tong; Shi Wang |
| The present disclosure discloses a method for controlling a standing wave accelerator and a system thereof. The method comprises: generating, by an electron gun, an electron beam; injecting the electron beam into an accelerating tube; and controlling a microwave power source to generate and input microwave with different frequencies into the accelerating tube, so that the accelerating tube switches between different resonant modes at a predetermined frequency to generate electron beams with corresponding energy. According to the above solution, it only needs to change the output frequency of the microwave power source in the process of adjusting energy, without making any change to the accelerating structure per se. Therefore, the method is easy to operate. In addition, the structure of the accelerating tube in the above system is simple, without adding a particular regulation apparatus. | ||||||
| 83 | Standing wave electron linear accelerator with continuously adjustable energy | US14137262 | 2013-12-20 | US09426877B2 | 2016-08-23 | Chuanxiang Tang; Zhe Zhang; Qingxiu Jin; Jiaru Shi; Huaibi Chen; Wenhui Huang; Shuxin Zheng; Yaohong Liu |
| A standing wave electron linear accelerating apparatus and a method thereof are disclosed. The apparatus comprises an electron gun configured to generate electron beams; a pulse power source configured to provide a primary pulse power signal; a power divider coupled downstream from the pulse power source and configured to divide the primary pulse power signal outputted from the pulse power source into a first pulse power signal and a second pulse power signal; a first accelerating tube configured to accelerating the electron beams with the first pulse power signal; a second accelerating tube configured to accelerate the electron beams with the second pulse power signal; a phase shifter configured to continuously adjust a phase difference between the first pulse power signal and the second pulse power signal so as to generate accelerated electron beams with continuously adjustable energy at output of the second accelerating tube. | ||||||
| 84 | Accelerating structure | US14024865 | 2013-09-12 | US09237641B2 | 2016-01-12 | Daisuke Suzuki; Sadao Miura |
| The present invention provides an accelerating structure capable of increasing a degree of vacuum at a middle part inside the accelerating structure while confining an alternating electric field to the inside. An accelerating structure 1 is formed of a plurality of annular discs 2 and 3 serially connected into a cylindrical shape. At least one of the discs 3 disposed at a middle part of the accelerating structure 1 includes: a choke structure formed by a choke filter 7; and a vacuum port 8 opened in an outer circumferential surface of the disc on an outer circumferential side radially outward from the choke structure, and the vacuum port 8 is connected to an external exhaust device. | ||||||
| 85 | Charged particle accelerators, radiation sources, systems, and methods | US13366963 | 2012-02-06 | US09030134B2 | 2015-05-12 | David Whittum; James E. Clayton; George Merdinian |
| Man-portable radiation generation sources and systems that may be carried by hand to a site of interest by one or two people, are disclosed. Methods of use of such sources and systems are also disclosed. Battery operated radiation generation sources, air cooled radiation generation sources, and charged particle accelerators, are also disclosed. A radiation generation source, a radiation scanning system, and a target assembly comprising target material having a thickness of less than 0.20 mm are also disclosed. | ||||||
| 86 | Distributed Coupling High Efficiency Linear Accelerator | US14207376 | 2014-03-12 | US20140191654A1 | 2014-07-10 | Sami G. Tantawi; Jeffrey Neilson |
| A microwave circuit for a linear accelerator includes multiple monolithic metallic cell plates stacked upon each other so that the beam axis passes vertically through a central acceleration cavity of each plate. Each plate has a directional coupler with coupling arms. A first coupling slot couples the directional coupler to an adjacent directional coupler of an adjacent cell plate, and a second coupling slot couples the directional coupler to the central acceleration cavity. Each directional coupler also has an iris protrusion spaced from corners joining the arms, a convex rounded corner at a first corner joining the arms, and a corner protrusion at a second corner joining the arms. | ||||||
| 87 | Interleaving multi-energy X-ray energy operation of a standing wave linear accelerator | US12718901 | 2010-03-05 | US08284898B2 | 2012-10-09 | Ching-Hung Ho; Stephen Wah-Kwan Cheung; Roger Heering Miller; Juwen Wang |
| The disclosure relates to systems and methods for interleaving operation of a standing wave linear accelerator (LINAC) for use in providing electrons of at least two different energy ranges, which can be contacted with x-ray targets to generate x-rays of at least two different energy ranges. The LINAC can be operated to output electrons at different energies by varying the power of the electromagnetic wave input to the LINAC, or by using a detunable side cavity which includes an activatable window. | ||||||
| 88 | CHARGED PARTICLE ACCELERATORS, RADIATION SOURCES, SYSTEMS, AND METHODS | US13366963 | 2012-02-06 | US20120134467A1 | 2012-05-31 | David Whittum; James E. Clayton; George Merdinian |
| Man-portable radiation generation sources and systems that may be carried by hand to a site of interest by one or two people, are disclosed. Methods of use of such sources and systems are also disclosed. Battery operated radiation generation sources, air cooled radiation generation sources, and charged particle accelerators, are also disclosed. A radiation generation source, a radiation scanning system, and a target assembly comprising target material having a thickness of less than 0.20 mm are also disclosed. | ||||||
| 89 | LOW-INJECTION ENERGY CONTINOUS LINEAR ELECTRON ACCELERATOR | US12451433 | 2005-12-12 | US20100289436A1 | 2010-11-18 | Andrei Sergeevich Alimov; Boris Sarkisovich Ishkhanov; Nikolai Ivanovich Pakhomov; Viktor Petrovich Sakharov; Vasily Ivanovich Shvedunov |
| This invention relates to continuous standing-wave linear electron accelerator (9) comprising a low-energy electron source (10), for example, within a range of 10-20 keV, an accelerating structure (1 or 1′) for accelerating low initial energy electrons to required values; at least, one high-frequency power supply (11) for the said accelerating structure (1 or 1′); a power supply (13) for said electron source (10) and high-frequency power supply (11); a receiving antenna (14), which is arranged in accelerating unit of accelerating structure (1 or 1′) and is used for emitting of high-frequency signal for controlling the amplitude and phase of accelerating field. Low-energy electron beam is directed to the first unit of accelerating structure (1 or 1′) contained successively accelerating units (2, 3, 4i). The first of them is embodied in the form of a bunch resonator (2), the second unit is embodied in the form of a buster resonator (3), and successive units (4i) are used for increasing the electron energy. Also the following is proposed: selection of geometrical parameters of accelerating units, the versions of their arrangement in the said accelerating structure and the use of power supply modes by different high-frequency power sources such as magnetrons, externally excitable klystrons or klystrons operating in a self-oscillating mode with accelerating structure in a feedback circuit. | ||||||
| 90 | Standing wave electron linear accelerator and installation adjusting device thereof | US11997442 | 2006-12-25 | US07751531B2 | 2010-07-06 | Yaohong Liu; Chuanxiang Tang; Yuanjing Li; Jinsheng Liu; Wei Jia; Jianjun Gao; Huaping Tang; Chong Gu; Wei Yin; Dan Zhang; Qinghui Zhang |
| The present invention discloses a standing wave linear accelerator, comprising: a microwave device configured to generate microwave; an electron beam emitting device configured to emit electron beam; an accelerating device configured to receive the microwave generated by the microwave device and form a microwave electric field, to accelerate electron beams generated from the electron beam emitting device and undertake the accelerated electron beam targeting to emit X ray beam; a synchronous device generating synchronous pulse signal; and a quick beam emitting device receiving the synchronous pulse signal generated by the synchronous device, wherein the microwave device runs and generates microwave in advance before the operation of the electron beam emitting device based on the synchronous pulse signal, and the quick beam emitting device drives the electron beam emitting device to emit electron beam after power of the microwave generated by the microwave device reaches stable state, so that the accelerating device emits X ray beam. In the accelerator, the microwave system and the electron beam emitting device do not work at the same time, and the accelerator electron beam emitting system is started only when the AFC is put into operation and runs stably. | ||||||
| 91 | Charged particle accelerators, radiation sources, system, and methods | US12287792 | 2008-10-14 | US20090140177A1 | 2009-06-04 | David Whittum; James Clayton; George Merdinian |
| Man-portable radiation generation sources and systems that may be carried by hand to a site of interest by one or two people, are disclosed. Methods of use of such sources and systems are also disclosed. Battery operated radiation generation sources, air cooled radiation generation sources, and charged particle accelerators, are also disclosed. A radiation generation source with a target less than 0.20 mm is also disclosed. | ||||||
| 92 | Particle Accelerator and Methods Therefor | US12197176 | 2008-08-22 | US20090045746A1 | 2009-02-19 | Samy M. Hanna |
| 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 medical applications such as radiation therapy and imaging. In one embodiment, the linac includes an electron gun for generating an electron beam, and a plurality of accelerating cavities which accelerates the electron beam by applying electromagnetic fields generated by a microwave source. At least two adjacent accelerating cavities of the plurality of accelerating cavities are coupled together by at least one resonant iris. The electromagnetic fields resonate through the plurality of accelerating cavities and the at least one resonant iris. | ||||||
| 93 | Particle accelerator and methods therefor | US11287976 | 2005-11-27 | US07423381B2 | 2008-09-09 | Samy M. Hanna |
| 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 medical applications such as radiation therapy and imaging. In one embodiment, the linac includes an electron gun for generating an electron beam, and a plurality of accelerating cavities which accelerates the electron beam by applying electromagnetic fields generated by a microwave source. At least two adjacent accelerating cavities of the plurality of accelerating cavities are coupled together by at least one resonant iris. The electromagnetic fields resonate through the plurality of accelerating cavities and the at least one resonant iris. | ||||||
| 94 | Ion acceleration system for hadrontherapy | US11232929 | 2005-09-23 | US07423278B2 | 2008-09-09 | Ugo Amaldi; Massimo Crescenti; Riccardo Zennaro |
| System for ion acceleration for medical purposes comprising a conventional or superconducting cyclotron, a radiofrequency linear accelerator (Linac), a Medium Energy Beam Transport line (MEBT) connected, at the low energy side, to the exit of the cyclotron, and at the other side, to the entrance of the linear radiofrequency accelerator, as well as a High Energy Beam Transport line (HEBT) connected at high energy side to the radiofrequency linear accelerator exit and at the other end, to a system for the dose distribution to the patient.The high frequency of operation of the Linac allows for a reduced consumption and a remarkable compactness facilitating its installation in hospital structures. The use of a modular LINAC allows varying in active way the energy and the current of the therapeutic beam, having a small emittance and a time structure adapted to the dose distribution based on the technique known as the “spot scanning”. | ||||||
| 95 | Standing-wave electron linear accelerator apparatus and methods | US11891639 | 2007-08-10 | US20080061718A1 | 2008-03-13 | Vitaly Pirozhenko; Gary Bowser; Vladimir Belugin; Nikolay Rozanov |
| 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 having a plurality of accelerating and coupling cavities, and an electromagnetic drive subsystem having a single radio-frequency (RF) generator coupled to the accelerating section at a single location. The accelerating and bunching sections are directly coupled and share a common wall, which may have a resonant coupling cavity therein, such that charged particles bunch in the bunching section and travel through the common wall into the accelerating section where they are accelerated and exit the particle accelerator system as a beam of bunched charged particles. Preferably, a phase shift of one hundred-eighty degrees (180°) (or π radians) is created between the electric fields of successive bunching cavities in the bunching section. | ||||||
| 96 | Phase switch and a standing wave linear accelerator with the phase switch | US11496733 | 2006-07-31 | US20070096664A1 | 2007-05-03 | Chongguo Yao |
| A phase switch (energy switch) comprising a three-cavity system (an end-coupled cavity+side-passed accelerate cavity+an end-coupled cavity) and a separate single couple cavity is disclosed. The phase shift between the adjacent accelerate cavities is π when the three-cavities system is disordered (state ‘0’); and a microwave pass through the three-cavities system to the adjacent accelerate cavities, the phase between the adjacent accelerate cavities is change to 2π (or 0) when the single couple cavity is disordered (state ‘1’). When the state 0changes to state 1, the field phase in the structure behind the system is changed to π, thereby to switch the phase. In the two states, the entire structure operates in π/2 mode, that is very stable. That is very important for the medical accelerator. The detaining components have been moved outside the cavity when the single couple cavity or the three-cavity system is in the operate state, without warring about high frequency breakdown. By changing couple between the two end-coupled cavities in the three-cavity system and the adjacent accelerate cavities and between the cavities in the system, the relative field-strength in the acceleration section besides the switching is changed while the phase reverses. It can be used for 6 Mev accelerator middle-energy or high-energy accelerator. | ||||||
| 97 | Standing wave particle beam accelerator having a plurality of power inputs | US11212471 | 2005-08-25 | US20070046401A1 | 2007-03-01 | Gard Meddaugh |
| 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 power input, wherein the first section is configured to produce a particle beam having a first energy E1, and the second section is configured to increase or decrease the first energy E1 by an amount E2, the absolute value of E2 being less than E1. | ||||||
| 98 | X-RAY SOURCE EMPLOYING A COMPACT ELECTRON BEAM ACCELERATOR | US10407101 | 2003-04-03 | US20040195971A1 | 2004-10-07 | Mark E. Trail; David H. Whittum; Gard E. Meddaugh |
| A standing wave electron beam accelerator and x-ray source is described. The accelerator has a plurality of on-axis resonant cells having axial apertures electrically coupled to one another by on-axis coupling cells having axial apertures. The accelerator includes a buncher cavity defined in part by an apertured anode and a half cell. The buncher cavity is configured to receive electrons injected through said anode aperture and r.f. focus them into a beam which is projected along the axis through said apertures. An x-ray target is supported in spaced relationship to said accelerator by a support having a smaller diameter than the accelerator. | ||||||
| 99 | Multi-mode operation of a standing wave linear accelerator | US09800214 | 2001-03-05 | US06493424B2 | 2002-12-10 | Kenneth Whitham |
| The invention provides a scheme in accordance with which a linear accelerator may be operated in two or more resonance (or standing wave) modes to produce charged particle beams over a wide range of output energies so that diagnostic imaging and therapeutic treatment may be performed on a patient using the same device. In this way, the patient may be diagnosed and treated, and the results of the treatment may be verified and documented, without moving the patient. This feature reduces alignment problems that otherwise might arise from movement of the patient between diagnostic and therapeutic exposure machines. In addition, this feature reduces the overall treatment time, thereby reducing patient discomfort. | ||||||
| 100 | Linear accelerator | US09529757 | 2000-04-18 | US06376990B1 | 2002-04-23 | John Allen; Leonard Knowles Brundle; Terry Arthur Large; Terence Bates |
| This device allows the variation of the coupling between two points in an RF circuit in a very simple way while maintaining the RF phase relationship and varying the relative magnitude of the RF fields. The device is characterized by a simple mechanical control of coupling value, that has negligible effect on the phase shift across the device. This is achieved by the simple rotation of the polarisation of a TE111 mode inside a cylindrical cavity. Such a device does not contain resistive elements, and the sliding mechanical surfaces are free from high RF currents. This device finds an application in standing wave linear accelerators, where it is desirable to vary the relative RF field in one set of cavities with respect to another, in order that the accelerator can operate successfully over a wide range of energies. | ||||||
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