274 results about "Electron acceleration" patented technology

The invention discloses a point light source electron accelerator which comprises a sealing box body, a cathode, a laser emitter, a reflecting cover, a grid plate and a mounting plate, the mounting plate is erected in the sealing box body, a mounting hole is formed in the mounting plate, the cathode is mounted in the mounting hole, and the laser emitter is arranged in the sealing box body. The reflecting cover is arranged at the top of the mounting hole; the reflecting cover is a semi-spherical surface, a laser through hole is formed in the top of the semi-spherical surface, and the laser through hole is coaxial with the cathode; the transmitting end of the laser transmitter is aligned with the cathode; the grid plate is mounted below the mounting plate and is aligned with the mounting holes; and an electron outlet is formed below the grid plate. The invention provides a point light source electron accelerator, and the point light source electron accelerator provides a light and miniaturized electron accelerator design, so that the application field of the accelerator is wider.

The embodiment of the invention particularly relates to a dosage monitoring device based on a scintillation fiber array and a beam control device. In the dose monitoring device, when a beam passes through a two-dimensional scintillation optical fiber array detector, a plurality of first scintillation optical fibers arranged in parallel in a first scintillation optical fiber layer and a plurality of second scintillation optical fibers arranged in parallel in a second scintillation optical fiber layer are excited to emit scintillation fluorescence, and the scintillation fluorescence is transmitted along the optical fibers and received by a photoelectric detection unit; and the photocurrent signal is further converted into a voltage pulse signal by the current-voltage conversion unit, and the output dose information and the radiation field dose distribution information of the electron accelerator can be further obtained according to the voltage pulse signal.

The invention relates to the field of sterilization and sterilization technologies, in particular to an electron accelerator real-time monitoring system which comprises an edge calculation module, a monitoring and metering module, an instruction generation module and an instruction execution module. The monitoring and metering module comprises multiple types of sensors and is used for acquiring the operating environment temperature, the radiation intensity and the vacuum degree of an internal related system in real time; a chip and a communication module are integrated in the edge computing module, the edge computing module is connected with the monitoring and metering module, an edge algorithm framework is arranged in the edge computing module, a cloud computing platform is built, data of the monitoring and metering module are received in real time, calculation, analysis and processing are carried out, and a result is sent to the instruction generation module; the instruction generation module operates a related instruction file according to a calculation result of the edge calculation module, generates a control instruction and sends the control instruction to the instruction execution module; and the instruction execution module changes the operation states of an electron gun and an accelerating tube of the electron accelerator. The method has the effect of improving the accuracy and reliability of the electron accelerator monitoring system.

Disclosed in the present invention are a scanning box device and an electron accelerator, the electron accelerator comprising an accelerating tube and a deflection coil; the scanning box device comprising a scanning chamber and a scanning box, wherein the scanning chamber is sealingly connected to the scanning box; the scanning chamber is arranged above the scanning box; the accelerating tube is arranged above the scanning chamber; the deflection coil is arranged on the outer side of the scanning chamber; and the scanning chamber is made of a non-metallic material. The present invention can prevent the generation of eddy currents in the scanning box, thus reducing the problems of energy loss and heat generation, improving the performance and stability of the apparatus.

The invention provides a gallium nitride-based light emitting diode epitaxial structure, a preparation method thereof and an LED chip. In the epitaxial structure, a multi-stage electron-phonon scattering structure is designed for the situations of electron acceleration and hot electron transition caused by electron ballistic transport and a quantum stark effect structure in a quantum well, the forbidden band width of a quantum well layer in a multi-quantum well barrier layer is gradually increased, and an InGaN step structure is used for inhibiting electron leakage under different situations, so that the quantum efficiency is improved. And the external quantum efficiency under large current is effectively improved.

The embodiment of the invention particularly relates to a beam parameter monitoring device and a beam control device of an electron accelerator. In the monitoring device, a beam output by an electron accelerator sequentially passes through a first annular channel and a second annular channel, and a processor is connected with a first cylindrical electrode, a second cylindrical electrode, a third cylindrical electrode, a fourth cylindrical electrode, a fifth cylindrical electrode, a sixth cylindrical electrode, a seventh cylindrical electrode and an eighth cylindrical electrode. Induced currents respectively corresponding to a first cylindrical electrode, a second cylindrical electrode, a third cylindrical electrode, a fourth cylindrical electrode, a fifth cylindrical electrode, a sixth cylindrical electrode, a seventh cylindrical electrode and an eighth cylindrical electrode when a beam output by an electron accelerator continuously passes through a first annular channel and a second annular channel in sequence are monitored; and obtaining output dose information and radiation field dose distribution information corresponding to the output beam of the electron accelerator. And output dose information and radiation field dose distribution information corresponding to the output beam of the electron accelerator can be accurately monitored.

An electron propulsion engine utilizes the acceleration of electrons to propel a spacecraft through space. The acceleration of the electrons in space emits electromagnetic radiation which can be used to propel the spacecraft. The radiation emission also decelerates the electrons, which allows the decelerated electrons to be recycled for reuse by the electron propulsion engine. The electron propulsion engine includes a first engine module, a second engine module, and an engine control system. The first engine module and the second engine module correspond to two mirror structures that form the electron propulsion engine. The engine control system facilitates the automatic control of the operation of the electron propulsion engine. The first engine module and the second engine module each includes a vacuum housing. The vacuum housing of each engine module is a D-shaped structure that facilitates the acceleration of the electrons and the resulting radiation emission to propel the spacecraft.

The embodiment of the invention discloses a cold cathode flat plate X-ray source capable of coding light emitting and a coding light emitting method, the ray source comprises a vacuum sealing cavity, a cathode assembly and an anode assembly, the cathode assembly and the anode assembly are arranged in the vacuum sealing cavity in a sealing manner, and the cathode assembly and the anode assembly are oppositely arranged at an interval; a vacuum working space for electron acceleration and X-ray generation is formed; the cathode assembly comprises a cathode substrate and a nano cold cathode electron source array arranged on the cathode substrate; the anode assembly comprises an anode substrate and a transmission anode target arranged on the anode substrate; wherein at least one of the nanometer cold cathode electron source array and the transmission anode target is in a coding state: when the nanometer cold cathode electron source array is in the coding state, the nanometer cold cathode electron source array comprises a micro-unit electron source array capable of independently addressing, and a preset coding pattern is formed; and when the transmission anode target is in a coding state, a metal coating with a preset coding pattern is formed on the surface of the anode substrate through a micromachining process so as to integrate a coding function.

The invention provides a planar distribution multi-beam electron gun, and relates to the technical field of microwave electric vacuum, and the planar distribution multi-beam electron gun comprises a housing; the cathode assembly is arranged in the shell, the cathode assembly comprises a cathode head, the surface of the cathode head is provided with a plurality of emitting surfaces which are arranged in a common plane in parallel at intervals, and the emitting surfaces are configured to escape electrons after being heated; the anode is arranged in the shell, and an electric field is formed between the anode and the emitting surfaces so as to accelerate escaped electrons, so that a plurality of electron beams are formed; the focusing electrode is arranged between the cathode head and the anode, an opening is formed in the focusing electrode, a plurality of grid wires are arranged on the opening, a grid gap between every two adjacent grid wires is aligned with the multiple emission surfaces in the emission direction of the electron beams, and the multiple grid wires are constructed to control beam diameters and divergence angles of the multiple electron beams; each electron beam passes through the gate slot aligned with the emission surface on which the electron beam is formed and enters the anode.

The utility model relates to an accelerating tube of an electron accelerator, which comprises a plurality of electrode plates and a plurality of insulating rings which are laminated, each electrode plate comprises an edge part, and the edge part of each electrode plate is connected with a first insulating ring through a first glue layer and is connected with a second insulating ring through a second glue layer. The edge part is provided with a plurality of through holes which are spaced from one another, and the first glue layer and the second glue layer are communicated through the edge part and the through holes, so that the first insulating ring and the second insulating ring are directly bonded. According to the accelerating tube of the electron accelerator, the internal stress of the electrode plates is eliminated through the through holes in the edge parts of the electrode plates, and the adjacent insulating rings are directly bonded through the through holes, so that the connecting strength of the electrode plates and the insulating rings is improved, the insulating rings are not easy to damage, and the service life of the accelerating tube is prolonged. And it is ensured that the accelerating tube can operate safely and reliably under the ultrahigh vacuum condition.

The invention relates to the technical field of accelerator beam diagnosis, in particular to an integrated non-interception probe and a beam intensity and phase measuring device and method.The integrated non-interception probe comprises a vacuum pipeline, a flange shell, a first magnetic ring and a second magnetic ring, a first induction coil winding is wound around the periphery of the first magnetic ring, and a second induction coil winding is wound around the periphery of the second magnetic ring; the first induction coil winding is wound on the periphery of the first magnetic ring, the second induction coil winding is wound on the periphery of the second magnetic ring, magnetic field changes generated when beams pass through are induced through the first induction coil winding and the second induction coil winding, beam signals are measured, and the first magnetic ring and the first induction coil winding measure real-time beam intensity. The second magnetic ring and the second induction coil winding measure the real-time beam phase. According to the invention, beam current intensity and phase measurement functions are integrated in the same non-interception probe, so that the integration level and compactness of equipment are improved, and the design of a miniaturized accelerator is facilitated. The method can be widely applied to various accelerators such as electron accelerators, proton accelerators and heavy ion accelerators, and is used for accelerator beam diagnosis.

The invention relates to the technical field of lasers, and discloses a corona-based creeping spark discharge strong pre-ionization pulse gas laser which comprises a main frame chamber, a pre-ionization device is fixedly mounted at the top of an inner cavity of the main frame chamber, a cathode electrode is arranged at the top of the inner cavity of the main frame chamber, and a connecting copper sheet is fixedly mounted on the lateral upper portion of the inner wall of the main frame chamber. A flow guide plate is fixedly installed on the connecting copper sheet, and an anode electrode is fixedly installed at the top end of the flow guide plate. A corona-based creeping spark discharge strong pre-ionization pulse gas laser is characterized in that a pre-ionization area can be formed on a pre-ionization device and structures on the pre-ionization device, electrons in the pre-ionization area move in an accelerated manner under the action of electric field force, and in the movement process, the electrons in the pre-ionization area are separated from the pre-ionization device. And the electrons and other gas particles are subjected to inelastic collision and ionization or excitation, so that high-concentration and uniform initial electrons are generated, a micro-discharge channel is formed, and continuous seed electrons are provided for a core discharge region of the micro-discharge channel.

The utility model relates to an electron accelerator, two ends of a cylindrical body are respectively connected with a top cover and a base assembly, an accelerating tube is connected with the base assembly in the cylindrical body, electrons injected by a laser electron gun assembly form a high-energy electron beam in the accelerating tube, and the accelerating tube is fixed in a closed space formed by the cylindrical body. The insulating structural member comprises an insulating cover and an insulating cylinder, the insulating cover is in close fit with the top cover in the top cover, the insulating cylinder and the insulating cover are also fixed in the closed space, the insulating cover and the insulating cylinder form an insulating cavity, the accelerating tube is arranged in the insulating cavity, and the remaining space between the accelerating tube and the cylinder body is filled with the insulating glue layer. According to the electron accelerator provided by the utility model, solid insulation is provided through the combination of the insulating structural member and the insulating adhesive layer, compared with a high-pressure gas insulated accelerator in the prior art, the volume is greatly reduced, the breakdown voltage of the accelerator can be greatly improved, the operation is more stable, and the service life is greatly prolonged; and the manufacturing cost is also greatly reduced.

An easy-to-adjust X-ray source enhancement system based on a cascaded high-density structure comprises a linear gas nozzle, a metal target, a fixed sleeve, a fixed rod and a three-dimensional mobile platform, and can effectively generate a two-stage high-density structure to enhance radiation of a betatron X-ray source. The device has the advantages of simplicity in operation, compact structure, generation of two-stage high-density structure distribution and good stability. The invention relates to the field of interaction of ultra-short and ultra-strong laser plasmas, in particular to a process of accelerating and driving high-brightness X-rays by laser tail field electrons, in the first stage, generated density falling edges are used for generating electron injection, and stable generation of large-charge electrons is promoted. And the second stage utilizes the characteristics of the high-density platform region to enhance the lateral oscillation of electrons, thereby improving the X-ray radiation energy and photon yield.

The utility model discloses a beam detection device and an electron accelerator, the electron accelerator comprises an accelerating tube, a magnetic lens and a tungsten target, the magnetic lens is arranged at an electron beam outlet of the accelerating tube, and the beam detection device is arranged between the magnetic lens and the tungsten target. The beam detection device comprises a fixing body, an electronic receiving piece, a conductor piece, an insulating piece, a detection circuit and a control circuit, a through hole is formed in the fixing body, the electronic receiving piece is fixed to the periphery of the through hole through the insulating piece and connected with the conductor piece, a plurality of connecting holes are formed in the side face of the fixing body, and the detection circuit is connected with the control circuit. The conductor piece penetrates through the connecting hole to be connected with the detection circuit, the detection circuit transmits a detection signal to the control circuit, and the control circuit transmits a control signal to the magnetic lens. According to the utility model, the electron accelerator can be improved, so that the electron accelerator has the function of detecting the offset of the electron beam, the current of the magnetic lens can be adjusted, and the efficiency of the electron accelerator is improved.

The utility model discloses an electron accelerator and a target cooling device thereof, the target cooling device comprises a main body housing, a liquid inlet, a liquid outlet, a target material and a spacer, the middle part of the main body housing is provided with a mounting hole, the main body housing is internally provided with a liquid cooling cavity, and the liquid cooling cavity is provided with a liquid inlet and a liquid outlet. One end of the liquid cooling cavity is connected with the liquid inlet, and the other end of the liquid cooling cavity is connected with the liquid outlet; the target material and the spacer are both arranged in the mounting hole, the target material is arranged above the spacer, and the liquid cooling cavity comprises a gap between the target material and the spacer. The utility model provides the water-cooling heat dissipation mechanism of the target material, which improves the heat dissipation efficiency, timely and effectively takes away heat, reduces the temperature of the target material, ensures the efficiency and the quality of X-ray generation, enables equipment to operate more stably and safely, further integrates a tungsten target, a flange, a collimator and a heat dissipation structure on one device, can enable the structure of the equipment to be simplified, and reduces the production cost. The installation is convenient.

The invention discloses a device and method for accelerating mutation of traditional Chinese medicine seeds based on ray irradiation of an electron accelerator, and relates to the technical field of irradiation breeding equipment, and the device comprises an irradiation rack, a conveying frame, a collecting frame, a tray, a guide disc, the electron accelerator and a servo electric cylinder. The rotation of the guide disc drives the traditional Chinese medicine seeds to generate displacement change under the action of centrifugal force, the guide disc can enable the traditional Chinese medicine seeds to move outwards along the ball bottom type structure of the guide disc in the rotation process, and the traditional Chinese medicine seeds conduct arc-shaped upward diffusion movement along the ball bottom type structure; meanwhile, it is guaranteed that the traditional Chinese medicine seeds can slide inwards to be folded along the ball bottom type structure, and the guiding pieces conduct blocking, dispersing and overturning treatment on the traditional Chinese medicine seeds on the surface of the guiding disc; it is guaranteed that the electron accelerator conducts ray irradiation accelerated mutation treatment on different surfaces of the traditional Chinese medicine seeds, the irradiation uniformity of the surfaces of the traditional Chinese medicine seeds can be effectively improved, and then the irradiation treatment time is shortened.

The utility model discloses a mobile cable irradiation work platform and an electron accelerator system, the mobile cable irradiation work platform comprises a platform base, a shielding device, a take-up and pay-off device and a wire guide wheel set, and the bottom of the platform base is provided with a mobile device; the shielding device comprises a shielding wall main body which is vertically arranged at the rear part of the platform base; the take-up and pay-off device is used for loading and unloading a cable, and the cable on the take-up and pay-off device is connected with the wire guide The wire guide wheel set guides a cable on the take-up and pay-off device to the rear side of the shielding wall body. The electron accelerator system comprises a shielding shell and an electron accelerator; when the platform base moves to an operation position, the shielding wall body and the shielding shell form a shielding cavity, and an electron beam outlet of the electron accelerator is aligned with a cable on the rear side of the shielding wall body in the shielding cavity. The self-shielding device can be matched with a miniaturized electron accelerator to form a self-shielding structure, the occupied space is greatly reduced, the installation is convenient, and the production efficiency can be improved.

A facility for the production of radionuclides based photonuclear irradiation, comprising: an electron accelerator (1), producing an electron beam (2); a converter target assembly (21) with a converter target (20) that converts the electron beam (2) to Bremsstrahlung photons (15); a production target (17), irradiated by the Bremsstrahlung photons (15) and thereby producing said radionuclides.

The utility model discloses a scanning box device and an electron accelerator, the electron accelerator comprises an accelerating tube and a deflection coil, the scanning box device comprises a scanning chamber and a scanning box, the scanning chamber is hermetically connected with the scanning box, the scanning chamber is arranged above the scanning box, and the deflection coil is arranged in the scanning box. The accelerating tube is arranged above the scanning chamber, the deflection coil is arranged on the outer side of the scanning chamber, and the scanning chamber is made of a non-metal material. According to the utility model, eddy current of the scanning box can be avoided, energy loss and heating problems are reduced, and performance and stability of equipment are improved.

The invention relates to the technical field of electron accelerators, in particular to an ultrahigh frequency electron accelerator capable of under-beam automatic turnover conveying, which comprises a box body, an electric conveying belt, an electron beam emitter, a clamping mechanism, a turnover mechanism, an arrangement mechanism and an anti-deviation mechanism, and is characterized in that the electric conveying belt is fixedly arranged on the box body, and the electron beam emitter is fixedly arranged on the box body; the clamping mechanism is fixedly installed on the electric conveying belt and used for clamping objects on the electric conveying belt, and the overturning mechanism is fixedly installed on the clamping mechanism and used for overturning the clamped objects. According to the ultrahigh-frequency electron accelerator capable of automatically overturning and conveying under the beam, through the arranged clamping mechanism and the overturning mechanism, the clamping plate can be driven to automatically clamp and overturn goods conveyed under the beam, so that a uniform irradiation effect can be performed on multiple side surfaces of the goods, and the working efficiency and the irradiation effect of the electron accelerator are improved.

The invention relates to an electron accelerator cable irradiation device, and relates to the technical field of electron accelerator cable irradiation, and the device comprises an electron accelerator body, an irradiation block, a sliding assembly, a driving assembly, a transmission assembly, a clamp assembly and a collection box. Automatic conveying of the cable is achieved through the sliding assembly and the driving assembly in the sliding groove, and the driving assembly and the transmission assembly are used for coordinating work, so that the clamp assembly can clamp and rotate the cable, conveying and rotating of the cable are conducted at the same time, and uniform irradiation is ensured. And finally, the irradiated cable is recycled by the collection box. According to the invention, the efficiency and uniformity of cable irradiation are improved, the requirement of manual operation is reduced, and the production automation level is improved.

The invention discloses an electricity leading device and an electron accelerator, the electron accelerator comprises an accelerating tube device, the accelerating tube device comprises an insulating tube, the insulating tube is provided with a plurality of electricity leading holes, the accelerating tube device comprises a plurality of electrode plate devices, the electricity leading device comprises an electricity leading screw, a screw head and a sealing ring, and the sealing ring is provided with a sealing ring. An annular groove is formed in the front side of the screw head, a sealing ring is installed in the annular groove, the electricity leading screw penetrates through the electricity leading hole to be in threaded connection with the electrode slice device, and the screw head presses the sealing ring on the outer side of the electricity leading hole in the outer surface of the insulating tube. According to the electricity leading device, the connection effect of the electrode plate and the anode resistor can be achieved, meanwhile, the position of the electrode plate device can be fixed, the electricity leading device can further seal the accelerating tube of the electron accelerator, the accelerating tube is convenient and rapid to assemble, and the production speed is increased.

The utility model provides an ultrahigh-dose electron beam irradiation treatment system for products, and belongs to the technical field of irradiation processing of industrial electron accelerators. Comprising an electron accelerator, an under-beam reciprocating platform device, a container loading and unloading mechanism, a container conveying mechanism and a loading and unloading area. The two ends of the container conveying mechanism are provided with a feeding area and a discharging area respectively, and the feeding area and the discharging area jointly form a feeding and discharging area. An under-beam reciprocating platform device is arranged in the middle area of the container conveying mechanism, the electron accelerator is arranged over the under-beam reciprocating platform device, and container loading and unloading mechanisms are arranged on the left side and the right side above the under-beam reciprocating platform device. The linear reciprocating motion of the under-beam reciprocating platform device is perpendicular to the electron acceleration direction of the electron accelerator and perpendicular to the electron scanning direction of the electron accelerator. According to the utility model, dynamic circulating irradiation is realized through constant-speed operation in a fixed stroke, highly uniform irradiation dose is synchronously realized under the condition that the requirement of ultrahigh-dose irradiation is met, and the processing yield of products is improved.

The invention relates to an under-beam device for treating sewage through electron beam irradiation. The device comprises a water storage tank, an inclined flow channel, a rectifying device, a sewage outlet and an irradiation area. The sewage storage tank is arranged at the topmost end and used for collecting sewage; the inclined flow channel is positioned below a beam outlet of the electron accelerator and is used for guiding sewage to flow along a preset path and receiving electron beam irradiation; the rectifying device is arranged at the upper part of the runner and is used for adjusting and optimizing the flowing state of sewage; an electron accelerator is arranged above the irradiation area and is used for carrying out irradiation treatment on the sewage; the sewage outlet is used for discharging the treated sewage. The speed distribution of the sewage flowing layer is regulated and controlled by adjusting the inclination angle and the gradual shrinkage angle of the inclined flow channel and the structure of the vertical baffle, and the uniformity of the sewage absorbing dose is improved. The device can improve the utilization rate of electron beam energy and enhance the sewage treatment effect, and has remarkable economic value.

The invention discloses a generating device of a surface electromagnetic wave radiation source, which can be applied to the technical field of electromagnetic waves. The plasma excitation unit is used for generating plasma, and the plasma acceleration unit comprises an electron acceleration power supply, a cathode end face, a slow wave circuit, a plurality of insulation spacers, a plurality of acceleration poles and an output end face. An electron beam channel is formed in the middle area of the upper surface of the slow wave circuit and the middle area of the lower surface of the cathode end face, the insulation spacers, the acceleration poles and the output end face, and meanwhile the insulation spacers and the acceleration poles are arranged between the cathode end face and the output end face at intervals. The speed of the plasma in the electron beam channel output by the plasma excitation unit is adjusted through the plasma acceleration unit, so that the electromagnetic wave radiation source under the target frequency, the target bandwidth or the target power can be output, and the electromagnetic wave radiation source with high frequency, wider bandwidth and high power can be obtained.

The present invention provides a gallium nitride-based light-emitting diode epitaxial structure, a preparation method thereof, and an LED chip. In the epitaxial structure, a multi-level electron-phonon scattering structure, a stepwise increase in the bandgap width of the quantum well layer in the multi-quantum well barrier layer, and an InGaN step structure are designed to suppress electron leakage in different situations, targeting electron ballistic transport, electron acceleration caused by the quantum Stark effect structure in the quantum well, and hot electron transition. This effectively improves the external quantum efficiency under high current.

The invention discloses a beam spot adjusting method and an electron accelerator, the electron accelerator comprises an anode potential adjusting device and an electron extraction device, a hot cathode of the electron accelerator is arranged on the electron extraction device, and the beam spot adjusting method comprises the following steps: acquiring physical parameters of an accelerating tube of the electron accelerator; calculating the beam waist position of the electron beam bunch according to the physical parameters of the accelerating tube; the control quantity of an anode potential adjusting device is obtained according to the girdling position; and adjusting the beam spot size of the outlet of the accelerating tube by using the control quantity. According to the invention, the extraction electric field distribution can be obtained, the purpose of controlling the beam envelope is achieved, so that the electron beam bunch safely arrives at the outlet of the electron accelerator, and the dynamic adjustment of the accelerator extraction outlet beam spot size within a certain range is realized by controlling the potential difference between the cathode and the anode.

An anode potential adjustment device and an electron accelerator. The electron accelerator comprises a first electrode sheet (201), a second electrode sheet (202) and a high-voltage end (203), wherein the high-voltage end (203) is connected to the first electrode sheet (201). The anode potential adjustment device comprises a varistor (101) and an oil cylinder (102), wherein the varistor (101) is connected between the first electrode sheet (201) and the second electrode sheet (202); and the oil cylinder (102) is connected to a hydraulic pump by means of a hydraulic oil pipe, a piston of the oil cylinder is connected to the varistor (101), and the piston is configured to drive the varistor (101) to adjust a resistance value. The anode potential adjustment device can observe changes of a beam in real time when a high voltage and the beam exist at the same time, thereby making it easier to select an anode resistor (1010).