361results about "Linear accelerators" patented technology

The invention relates to a closed circulation 226Ra solution target system for producing 225Ac. The closed circulation 226Ra solution target system comprises a solution type 226Ra target, an isotope target bin, a valve, a 226Ra solution circulation structure, a radium actinide separation structure, a radium lead separation structure, a photon detection system I, a photon detection system II, a heat exchange system, a pressure reduction radon evaporator and a radon treatment system, and the solution type 226Ra target comprises a solution circulation pipeline and a radium-containing solution. The radium-containing solution is contained in the closed solution circulating pipeline; the solution circulating pipeline comprises a main loop pipeline and two branch pipelines; the photon detection system I, the 226Ra solution circulation structure, the pressure reduction radon evaporator, the heat exchange system, the valve and the photon detection system II are sequentially arranged on the main loop pipeline; and the radium actinide separation structure and the radium lead separation structure are respectively arranged on the two branch pipelines. The system can improve the preparation efficiency and yield of 225Ac.

One ECR ion source generates a He < 2 + > ion beam, the other ECR ion source generates a H2 < + > ion beam, the He < 2 + > or H2 < + > ion beam is selected by a deflection magnet and then transmitted and focused by LEBT to enter an RFQ, the focusing factor of the RFQ is increased and then reduced, DTL is IH-DTL designed by adopting KONUS beam dynamics and comprises two KONUS periods, the working frequencies of the RFQ and the DTL are respectively 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, 425MHz, after He < 2 + > or H2 < + > ion beams are accelerated by RFQ and DTL, the MEBT distributes and transmits the ion beams to a downstream accelerator and an isotope production device. According to the proton helium ion implanter provided by the invention, the particle beam can meet the injection requirement of a subsequent synchrotron, the miniaturization of the proton helium ion implanter is realized, and the production of medical isotopes is considered.

The present relates to device for ultra-high dose rate radiation treatment to a patient, comprising: —a radiation source for providing a radiation beam, and—a linear accelerator for accelerating said radiation beam until a predetermined energy, and—a beam delivery module for delivery the accelerated radiation beam. The device is arranged for generating an accelerated radiation beam having a predetermined energy between about 50 MeV and about 250 MeV, to deliver rate radiation dose of at least 10 Gy, during an overall time less than about 200 ms in order to generate a radiation field for treating a target volume of at least about 30 cm3, with said ultra-high dose rate radiation dose and / or a target volume located at least about 5 cm deep in the tissue of the patient with said ultra-high dose rate radiation dose.

The present invention relates to a device-produced medical isotope 225 Photonuclear reaction preparation in Ac production technology 225 Ac radium target design, specifically involving a method for producing 225 Ac's 226 Ra isotope target and its application. 226 The Ra isotope target comprises a nickel substrate, 226 Ra isotope sample, nickel electroplating layer and nickel protective shell; wherein, 226 The Ra isotope sample is evenly concentrated in the center of the nickel substrate, and the nickel electroplating layer covers 226 The outer surface of the Ra isotope sample, and the nickel substrate and nickel electroplating layer will 226 The Ra isotope sample is wrapped in the middle; the nickel protective shell wraps the nickel electroplating layer. 226 Ra isotope targets can be used in electron linear accelerators as a photonuclear reaction production 225 Ac raw material target, can improve 225 Production of Ac isotopes.

The invention discloses an electron linear accelerator for radiotherapy equipment in an X-ray operation. The microwave power source sequentially passes through the circulator and the power divider and then is connected with the first coupler and the second coupler, the first coupler is connected with the first acceleration cavity to provide an independent microwave magnetic field, and the second coupler is connected with the second acceleration cavity to provide an independent microwave magnetic field. An electron gun of the electron linear accelerator is sequentially connected with the first acceleration cavity and the second acceleration cavity and then outputs electron beams; the first coupler inputs the microwave power to the first acceleration cavity, so that the first acceleration cavity optimizes the electron beam energy spectrum monochromaticity; and the second coupler inputs the microwave power into the second acceleration cavity, so that the second acceleration cavity accelerates the electron beam to required energy. According to the electron linear accelerator, the needed electron beam energy can be achieved only through the two cavities, a large amount of energy of the finally obtained electron beam is concentrated on the needed energy through the acceleration mode, and in other words, the energy spectrum monochromaticity is better.

A ray generating device and a control method thereof are provided. The ray generating device includes: an electronic beam generating device; a microwave generating device; a microwave circulator, having a power input port and at least two power output ports, the power input port being connected to the microwave generating device; a plurality of accelerating tubes respectively connected to at least two power output ports, configured to respectively receive a plurality of electronic beams, and accelerate electronic beams respectively through microwaves received from the at least two power output ports, and to respectively generate a plurality of rays having at least two different energies; and a controller, configured to perform chronological control on microwave power of the microwave generating device, and chronological control on beam loadings of the electronic beams generated by the electronic beam generating device and respectively corresponding to accelerating tubes.

Embodiments of systems, devices, and methods relate to initiating beam transport for an accelerator system. An example method includes increasing a bias voltage of one or more electrodes of the accelerator system to a first voltage level and extracting a charged particle beam from a beam source such that the beam is transported through the accelerator system. The beam has a beam current at a first beam current level that results in a first transient voltage drop of the accelerator system within a threshold. The method further includes increasing the beam current at a rate that results in one or more subsequent transient voltage drops of the accelerator system until the accelerator system has reached nominal conditions. The one or more subsequent transient voltage drops are within the threshold. Another example method includes biasing one or more electrodes of an accelerator system to a voltage level and selectively extracting, according to a duty cycle function, a charged particle beam from a beam source such that the charged particle beam is transported through the accelerator system. The duty cycle function can be linear or non-linear and can include a frequency f. The duty cycle function can include a variable pulse duration such that the variable pulse duration increases over time with each selective extraction of the charged particle beam.

Disclosed herein is a waveguide cell having a helical cavity. The waveguide cell has a central axis and a cavity having a transverse cross section whose rotational position about the central axis varies along the central axis. There is also disclosed a method a determining the shape of a waveguide cell.

The present invention relates to a production 225 Closed cycle of Ac 226 Ra solution target system. The closed cycle 226 Ra solution target system includes solution type 226 Ra target, isotope target chamber, valve, 226 Ra solution circulation structure, radium-actinium separation structure, radium-lead separation structure, photon detection system I, photon detection system II, heat exchange system, vacuum radon evaporator and radon treatment system, among which, solution type 226 The Ra target includes a solution circulation pipeline and a radium-containing solution, and the radium-containing solution is contained in a closed solution circulation pipeline; the solution circulation pipeline includes a main loop pipeline and two branch pipelines; the photon detection system I, 226 The Ra solution circulation structure, vacuum radon evaporator, heat exchange system, valve and photon detection system II are sequentially arranged on the main loop pipeline; the radium-actinium separation structure and the radium-lead separation structure are respectively arranged on the two branch pipelines. 225 Preparation efficiency and yield of Ac.

The invention belongs to the field of particle accelerator microwaves, and particularly relates to a C-band compact spherical microwave pulse compression device which comprises a shell, a dual-polarization mode coupler and a circular waveguide, a spherical energy storage cavity is formed in the shell, and the circular waveguide and the spherical energy storage cavity are communicated through a coupling hole; the dual-polarization mode coupler comprises a rectangular waveguide, a butterfly-shaped matching section and a cylindrical matching section. According to the klystron radio frequency pulse compression circuit, the radio frequency pulse with the pulse width of 2.5 microseconds of the klystron can be compressed to 300ns, the average power gain in a single pulse is more than 4 times, the peak power gain is 6.3 times, and the compression efficiency is about 54%. According to the dual-polarization mode coupler, the functions of power distribution, mode conversion and polarization mode generation are synchronously realized, a TE10 mode in a rectangular waveguide is converted into two polarization TE11 modes which are equal in amplitude and orthogonal in phase, and then the two orthogonal TE114 modes are excited in a spherical energy storage cavity.

The invention provides a multi-leaf grating assembly, radiotherapy equipment and a blade locking method. The multi-leaf grating assembly comprises a frame and at least two grating blades arranged at intervals. Each grating blade is in sliding connection relative to the frame and can slide along a first direction; the device further comprises a driving device and a locking piece connected with the driving device. When the grating blade slides into the initial position in the frame, the driving device can drive the locking piece to abut against the grating blade in the second direction, and the grating blade abuts against the frame. The first direction and the second direction are perpendicular to the thickness direction of the grating blade, and the first direction and the second direction are not parallel. The driving device can drive the locking piece to abut against the grating blade so that the grating blade can abut against the frame, and therefore the grating blade is fixed through friction force between the grating blade and the frame and friction force between the grating blade and the locking piece. Therefore, mechanical collision of grating blades or weakening of mechanical collision strength in acceleration and deceleration stages of high-speed rotation of the multi-leaf grating assembly is avoided.

The invention relates to the design of a radium target for preparing 225Ac through a photo-nuclear reaction in the technical field of production of a mechanical produced medical isotope 225Ac, in particular to a 226Ra isotope target for producing 225Ac and application of the 226Ra isotope target. The 226Ra isotope target comprises a nickel substrate, a 226Ra isotope sample, a nickel electroplated layer and a nickel protective shell; wherein the 226Ra isotope samples are uniformly concentrated at the central position of the nickel substrate, the nickel electroplated layer covers the outer surfaces of the 226Ra isotope samples, and the nickel substrate and the nickel electroplated layer wrap the 226Ra isotope samples in the middle; and the nickel protective shell wraps the nickel electroplated layer. The 226Ra isotope target can be applied to an electron linear accelerator and can be used as a raw material target for producing 225Ac through a photo-nuclear reaction, and the production quantity of the 225Ac isotope can be increased.

The invention relates to the technical field of heavy ion accelerators, in particular to a high-precision assembling device and method for a superconducting multi-pole combined magnet. The assembling device comprises a double-layer three-dimensional adjustable support used for adjusting the superconducting multi-pole magnets so that the adjacent superconducting multi-pole magnets can be accurately aligned; the superconducting multi-pole magnet butt joint tool is used for adjusting the axial angles of the superconducting multi-pole magnets and connecting the adjacent superconducting multi-pole magnets to form a superconducting multi-pole combined magnet; and the center shaft leading-out tool is used for converting the virtual center of the inner cavity of the superconducting multi-pole magnet into a solid center shaft. According to the invention, the double-layer three-dimensional adjustable bracket can be used for positioning the bracket position so as to adjust the position collimation of each group of superconducting multi-pole magnets; according to the superconducting multi-pole magnet butt joint tool, the axial angle of each group of superconducting multi-pole magnets can be adjusted with high precision; the center shaft leading-out tool can be used for converting the virtual center of the inner cavity of each superconducting multi-pole magnet into an entity center shaft so as to realize concentricity collimation of multiple groups of superconducting multi-pole magnets.

The utility model discloses a miniaturized beam unit module, and belongs to the technical field of electron linear accelerators. A miniaturized beam unit module comprises a magnetron assembly, a microwave system, a circulator assembly, an accelerating tube assembly, a primary collimating cone assembly and a fixed bottom plate. The magnetron assembly, the microwave system, the circulator assembly, the accelerating tube assembly and the primary collimating cone assembly are fixedly mounted on the fixed bottom plate; the magnetron assembly comprises a magnetron, and the magnetron is used for generating microwaves; the accelerating tube assembly comprises an accelerating tube; the microwave system is used for connecting the magnetron and the accelerating tube and feeding microwaves generated by the magnetron into the accelerating tube; the circulator assembly comprises a circulator, a waveguide port of the circulator is higher than a waveguide port of the magnetron, the circulator is arranged in the microwave system, and the circulator is used for isolating microwave power fed back to the magnetron; the position of the magnetron is moved downwards, so that the height of the waveguide port of the magnetron is lower than that of the waveguide port of the four-end circulator, and the purpose of miniaturization of the beam unit module is achieved.

The invention belongs to the technical field of linear accelerator optimization, and particularly relates to a linear accelerator beam optimization method, which comprises the following steps of: constructing a linear accelerator simulation model based on parameters, appearance and power of a linear accelerator, simulating various linear accelerators by adopting the linear accelerator simulation model, and optimizing the beam of the linear accelerator based on a display screen and a controller. Displaying and adjusting parameters in the simulated linear accelerator; through the cooperation of the above structures, the parameter and beam comparison table is generated, the beam condition of the linear accelerator is optimized and the beam state of the linear accelerator is adjusted based on the data on the parameter and beam comparison table, so that beam optimization of the linear accelerator is completed, and the linear accelerator simulation model is utilized to simulate the non-standard linear accelerator. Parameters in the non-standard linear accelerator and the beam state are compared and stored, so that the linear accelerator simulation model can simulate linear accelerators of different models.

An ion implantation system including an ion source for generating an ion beam, an end station for holding a substrate to be implanted by the ion beam, and a linear accelerator disposed between the ion source and the end station and adapted to accelerate the ion beam, the linear accelerator including a beam tube for transmitting the ion beam, the beam tube having at least five adjoining sidewalls, at least one resonator coupled to the beam tube, and at least one turbomolecular pump coupled to the beam tube, wherein at least one of the at least five adjoining sidewalls of the beam tube has an opening formed therein for providing access to an interior of the beam tube.

The invention discloses an electron beam bunch superposition method and device, and the beam bunch energy of the head part and the tail part of an electron beam bunch is different by adopting a beam energy absorption effect. And then a plurality of alpha magnets are utilized, so that the movement path of the high-energy beam bunches at the head of the beam bunch string is long, the movement path of the low-energy beam bunches at the tail of the beam bunch string is short, and longitudinal superposition and compression of the beam bunch string are achieved. And the alpha magnet can simultaneously realize an achromatic function, so that the transmission envelope after the beam bunch is compressed and superposed is not greatly increased. And the obtained shorter pulse beam can be used for scientific research application such as nuclear data measurement.

The invention discloses a quality control method based on a medical linear accelerator, and the method comprises the following steps: S1, data collection: periodically collecting multi-source built-in parameters from the medical linear accelerator, the multi-source built-in parameters comprising beam performance parameters, mechanical performance parameters and subsystem state parameters; s2, an intelligent analysis step: performing intelligent analysis on the multi-source built-in parameters acquired in the step S1, including S2.1, a dynamic baseline comparison step; s2.2, a trend prediction step; s2.3, a root cause analysis step; and S3, a decision feedback step: generating and outputting quality control decision information according to a result of the intelligent analysis step. The quality control method based on the medical linear accelerator aims to realize predictive early warning, intelligent root cause analysis and adaptive threshold management, so that the perspectiveness, the accuracy and the automation level of quality control are improved. The invention further discloses a quality control system based on the medical linear accelerator, a storage medium and a device.

A particle accelerator includes an acceleration cavity chain and at least one energy switch side cavity. The energy switch side cavity is communicated with two adjacent main cavities in the acceleration cavity chain through coupling openings respectively. The energy switch side cavity includes a pair of asymmetric side cavity noses arranged therein and an energy switch probe arranged at a top position thereof. The energy switch probe is configured to extend from the top position of the energy switch side cavity to a space between the pair of side cavity noses.

An ion implantation system including an ion source for generating an ion beam, an end station for holding a substrate to be implanted by the ion beam, and a linear accelerator disposed between the ion source and the end station and adapted to accelerate the ion beam, the linear accelerator including a beam tube for transmitting the ion beam, the beam tube having at least five adjoining sidewalls, at least one resonator coupled to the beam tube, and at least one turbomolecular pump coupled to the beam tube, wherein at least one of the at least five adjoining sidewalls of the beam tube has an opening formed therein for providing access to an interior of the beam tube.

A linear accelerator apparatus may include a beamline enclosure that defines a polygonal backbone, and a plurality of acceleration stages, disposed along a length of the beamline enclosure. A given acceleration stage may include a drift tube assembly to conduct an ion beam therethrough, a resonator, coupled to deliver an RF signal to the drift tube assembly, and a quadrupole assembly to shape the ion beam. As such, at a first acceleration stage, a first resonator may be disposed along a first side of the polygonal backbone, and at a second acceleration stage, adjacent to and downstream of the first acceleration stage, a second resonator may be disposed along a second side of the polygonal backbone, different from the first side.

The utility model discloses a scanning magnet, a scanning box and a linear accelerator, the linear accelerator comprises the scanning box, the top of the scanning box is provided with a scanning magnet bracket, the scanning magnet is arranged above the scanning magnet bracket, the scanning magnet comprises two iron cores and two coils, each iron core comprises a middle protrusion, a connecting piece and two side protrusions, and the two coils are arranged on the middle protrusion. The two side protrusions are arranged at the two ends of the connecting piece respectively, and the middle protrusion is arranged between the side protrusions. When the scanning magnet is installed above the scanning magnet bracket, the two coils are clamped on the two sides of the scanning box through the two iron cores, the scanning magnet is fixed to the scanning magnet bracket through a fixing support, a middle protrusion penetrates through middle holes of the coils and then is connected with the scanning box, and side protrusions of the two iron cores are connected with each other. The top side face and / or the bottom side face of the middle protrusion are / is provided with a fillet structure. The scanning box can change the distribution of a deflection magnetic field, improve the distribution uniformity of electrons, prolong the service life of the scanning box and improve the use efficiency of the electrons.

An ion implantation system including an ion source for generating an ion beam, an end station for holding a substrate to be implanted by the ion beam, and a linear accelerator disposed between the ion source and the end station and adapted to accelerate the ion beam, the linear accelerator comprising at least one acceleration stage including a resonator coil coupled to a drift tube assembly, the drift tube assembly including a first drift tube coupled to a first end of a first insulting rod via interference fit, a second drift tube coupled to a first end of a second insulting rod via interference fit, and a mounting bracket coupled to a second end of the first insulting rod and to a second end of the second insulting rod via interference fit.

A radiation dose rate control method, which relates to the technology of radiation, and an accelerator (100). The control method is used for an electron linear accelerator (100) comprising a microwave source, an electron gun (102) and an accelerating tube (104). The control method comprises: when an electron linear accelerator (100) outputs a beam, monitoring a first event used for indicating a change of a beam output parameter (S610), wherein the beam output parameter comprises a pulse of an electron gun (102) and a microwave power of a microwave source, and the first event is determined by means of radiation protection requirements; and in response to monitoring the first event, cutting off the pulse of the electron gun (102), and switching a first microwave power of the microwave source to a second microwave power, so that the leakage dose rate of a radiation safety boundary is less than or equal to a first preset threshold (S620), wherein the level of dark current in an accelerating tube (104) under the second microwave power is less than or equal to a second preset threshold. Further provided are a radiation dose rate control apparatus, an accelerator (100), and a radiation apparatus.

The invention relates to an acceleration device. The acceleration device comprises a drift tube linear accelerator and a radio frequency quadrupole field accelerator. And the radio frequency quadrupole field accelerator is directly connected with the drift tube linear accelerator. The radio frequency quadrupole field accelerator includes an electrode. In the proton transmission direction, the electrode is of an integrated structure and comprises a conventional part and an extension part. The extension part comprises one or more bunching units, the bunching units have negative synchronous phases, and the bunching capability of the radio frequency quadrupole field accelerator is adjusted by setting the length, the number and the synchronous phases of the bunching units; the aperture and the modulation coefficient of the bunching unit are the same as those of the previous unit, and the previous unit is a conventional part or the bunching unit.

The invention provides an accelerator system adjustment method, an accelerator system, electronic equipment and a storage medium. The transmission characteristic data and the charge quantity data of the undeflected beam are obtained through the first beam position detector, and the form and the charge quantity of the undeflected beam are accurately adjusted in combination with a preset adjustment strategy, so that the stability of beam transmission is ensured. And after the form data of the first beam reaches a preset value, monitoring the deflected beam data by using a second beam position detector, and further accurately adjusting the accelerator system to ensure that the deflected beam conforms to the target transmission characteristics. According to the invention, the transmission state of the beam can be accurately controlled in real time, risks of vacuum box breakdown and the like caused by beam mismatch are avoided, the safety and the stability of the system are improved, the possibility of equipment damage is obviously reduced especially under the high-dose-rate transient beam, and the treatment effect and the continuity of Flash radiotherapy are guaranteed.

Presented systems and methods enable efficient and effective radiation planning and treatment, including accurate and convenient transmission of the radiation towards a tissue target. In one embodiment, a radiation system includes an electron gun, a bend magnet, a scan control component, and an electron beam entry angle control component. The electron gun is configured to generate electrons. The linear accelerator is configured to accelerate the electrons in an electron beam. The bend magnet is configured to bend the path of the electron beam. The scan control component controls movement of the electron beam in a scan pattern. The electron beam entry angle control component is configured to control the entry angle of the electron beam.

A method of processing radiation associated with an object (22), the method comprising: providing a primary radiation source (12, 12a), a secondary radiation source (14; 14b) and a primary detector (16; 16a) in the housing; emitting primary radiation (20, 20a) onto the object by means of the primary radiation source; by means of the primary detector, a plurality of primary activity periods (76; 76a), the primary radiation having interacted with the object; and radiating the secondary radiation (24; 24b) with a secondary pulse (80; 80b) onto the object, the secondary pulses being emitted in a plurality of primary inactivity periods (78; 78a), each primary inactive period being interleaved with the primary active period; wherein no secondary pulse is emitted during the primary activity period; and wherein during each primary inactivity period, the primary detector is inactive in terms of capturing incoming radiation during the primary inactivity period.

A linear accelerator in data communication with a computing device and a programmable logic controller and including a magnetron, an electron gun that is configured to direct an accelerated beam of el

To provide an acceleration cavity capable of switching energy of charged particles without using a complex mechanism.SOLUTION: An acceleration cavity comprises: a body that is in an electrically conductive cylindrical shape and includes a plurality of division members obtained by division using a plane along the central axis so that division surfaces along the plane are provided in a state of facing each other with a gap; a plurality of cell parts that are disposed inside the body in a state of being arranged in the axial direction of the central axis of the body and are communicated with each other using a communication part through which charged particles can pass; and a switch member that is disposed in the gap of the body, is movable in the gap along the plane, and performs movement to switch the magnitude of an electric field for accelerating the charged particles.SELECTED DRAWING: Figure 2