21 results about "Beryllium window" patented technology

The utility model relates to an in-situ synchrotron radiation transmission type XAS battery testing device, which comprises a battery mould, the battery mould comprises a sealing cover, a main shell and a base, the sealing cover comprises a sleeve part inserted into the main shell, a first beryllium window is arranged at the lower end of the sleeve part, the base is fixedly arranged at the lower end of the main shell, and a second beryllium window is arranged in the middle of the base. A sealed space for containing the battery assembly is formed among the sleeve part, the main shell and the base, the upper side of the battery assembly is provided with a negative electrode making contact with the first beryllium window, and the lower side of the battery assembly is provided with a positive electrode making contact with the second beryllium window. And the base is provided with a positive lead connected with the charge-discharge instrument. According to the in-situ synchrotron radiation transmission-type XAS testing device, the combination of an electrochemical performance test and an in-situ synchrotron radiation transmission-type XAS test is realized, and the negative lead and the positive lead are respectively connected to the limiting flange part at the upper end of the sealing cover and the base, so that the sealing performance of an internal electrochemical cell cannot be damaged.

The application provides an X-ray communication device and method based on a laser-driven matrix photocathode. The device is applied to the technical field of X-ray tubes and comprises a laser control circuit, a matrix transmission photocathode array, a collimating microchannel plate, a matrix transmission anode target array, a vacuum tube shell and a beryllium window. The method comprises: generating a dynamic pattern, loading data information to be input into an optical signal; and exciting photoelectron emission with spatial resolution characteristics at a corresponding photocathode pixel area; each channel cluster is aligned with a single photocathode pixel at the front end; after the electrons enter the microchannel, continuous secondary electron emission occurs under the action of the electric field on the inner wall of the channel, and an avalanche effect is generated; and through mechanisms such as bremsstrahlung radiation, a bundle of microfocus X-rays is generated at each target point. In this way, the technical problems of the X-ray source in the prior art, such as the limitation in spatial coding capability, response speed, integration degree and communication dimension, can be solved.

The invention provides an X-ray communication device and method based on a laser driving matrix type photocathode. The device is applied to the technical field of X-ray tubes and comprises a laser control circuit, a matrix transmission type photocathode array, a collimation type structure micro-channel plate, a matrix transmission type anode target array, a vacuum tube shell and a beryllium window. The method comprises the following steps: generating a dynamic pattern, and loading data information to be input into an optical signal; photoelectron emission with spatial resolution characteristics is excited in a corresponding photocathode pixel area; each channel cluster is aligned with a single photocathode pixel at the front end; after the electrons enter the micro-channel, continuous secondary electron emission occurs under the action of an electric field on the inner wall of the channel, and an avalanche effect is generated; a beam of micro-focus X-rays is generated at each target spot through mechanisms such as tough-induced radiation. In this way, the technical problem that in the prior art, an X-ray source is limited in space coding capacity, response speed, integration degree and communication dimension can be solved.

The utility model discloses a system for prolonging the service life of a hard X-ray beryllium window, which is characterized by comprising a heating device and a two-dimensional moving device, the heating device is used for being connected with a beryllium window flange of a beryllium window, and the beryllium window flange is heated, so that water vapor in air is prevented from being attached to the surface of the beryllium window. The two-dimensional moving device is used for being connected with a vacuum pipeline where the beryllium window flange is located, the beryllium window flange is driven to move by moving the vacuum pipeline on a two-dimensional plane, and the incidence position of X rays on the beryllium window is adjusted. According to the utility model, the heating tape is wound outside the beryllium window flange, so that the adhesion of water vapor in the air on the beryllium window flange can be effectively slowed down, and the corrosion to oxygen-free copper / beryllium materials on the flange is reduced; a moving table in the XZ two-dimensional direction is installed at the bottom of the beryllium window flange, the flange is moved regularly to prevent one point of the beryllium piece from being irradiated by hard X-rays for a long time, and the service life of the beryllium piece can be effectively prolonged.

The application discloses a beryllium window device with gas and water cooling protection, which is characterized by comprising a water cooling beryllium window and a gas beryllium window protection device; the gas beryllium window protection device comprises a Kapton film, two gas pipelines and a terminal flange; a fixed flange on the atmospheric side of the water cooling beryllium window is connected with the terminal flange, the Kapton film is installed in a knife edge of the fixed flange; two through holes are arranged on the side wall of the fixed flange and are respectively in sealed connection with the gas pipelines, one of the gas pipelines is used for connecting cooling air to cool beryllium sheets in the water cooling beryllium window, and the other gas pipeline is used for discharging gas to form air cooling circulation. On the basis of the water cooling beryllium window, a set of gas protection device is added, and the service life of the beryllium window can be prolonged by means of air cooling, and the harm of beryllium oxidation to the human body can be avoided.

The present invention belongs to the field of nuclear radiation protection technology and provides a radioactive gas detection device based on a silicon drift detector. The device comprises a silicon drift detector and a sampling chamber. The sampling chamber has a circular hole at the top. The silicon drift detector is mounted above the sampling chamber with a beryllium window facing the circular hole. The gas to be measured enters the sampling chamber through an inlet pipe, and the gas in the chamber flows out through an outlet pipe. The outlet pipe is arranged offset from the inlet pipe. A preamplifier circuit board and a signal processing board are mounted above the silicon drift detector via a fixed holder. The silicon drift detector, preamplifier circuit board, and signal processing board are disposed within a detector housing, which is fixedly connected to the sampling chamber. A connector is provided at the top of the detector housing. The device can simultaneously calculate radioactive activity and perform nuclide identification. The device uses simulated data and real X-ray data to calculate gamma background counts. The corresponding functions can be achieved using only one detector, greatly improving detector utilization.

The present invention belongs to the field of scintillator imaging detection technology, and specifically discloses a high-vacuum light-shielding scintillator imaging sealing structure, including a scintillator high-vacuum cylinder, a light-shielding exhaust multi-stage structure, and a beryllium window pinhole imaging structure; the light-shielding exhaust multi-stage structure includes a light-shielding exhaust cylinder and at least two light-shielding exhaust rings, adjacent light-shielding exhaust rings are spaced and connected inside the light-shielding exhaust cylinder, a plurality of circumferentially distributed exhaust holes are provided on the end faces of the light-shielding exhaust rings, and the two ends of the light-shielding exhaust cylinder are interconnected; one end of the scintillator high-vacuum cylinder passes through the light-shielding exhaust rings in sequence and is located inside the light-shielding exhaust cylinder and is interconnected with the light-shielding exhaust cylinder and the beryllium window pinhole imaging structure; a scintillator is connected to the scintillator high-vacuum cylinder, and an exhaust port is provided on the scintillator high-vacuum cylinder. The present invention can perform multi-layer reflection shielding on visible light stray light, and at the same time realize efficient and rapid exhaust of gas in the high-vacuum cavity, thereby improving the detection efficiency and resolution capability of the scintillator imaging sealing structure under high vacuum conditions.

The utility model discloses a beryllium window device for protecting a detector of a fluorescence analyzer with high precision. The vacuum pressure gauge is arranged at a first port of the bottom bracket; one end of the flange is connected with the second port of the bottom bracket, and the other end of the flange is connected with the cavity of the analyzer detector; one end of the electromagnetic valve is connected with a third port of the five-way valve, and the other end of the electromagnetic valve is connected with a three-way valve; one end of the air exhaust proportional valve is connected with a fourth port of the five-way joint, and the other end of the air exhaust proportional valve is connected to the three-way joint through a hose; the rest end of the tee joint is connected with the vacuum pump; the deflation proportional valve is connected with a fifth port of the five-way valve; the air exhaust caliber controlled by the electromagnetic valve is larger than the air exhaust caliber controlled by the air exhaust proportional valve and the air exhaust caliber controlled by the air exhaust proportional valve.

The invention relates to the technical field of scintillator detectors, and particularly discloses scintillator detection equipment based on a photomultiplier device, which comprises an electromagnetic shielding shell, a scintillation crystal, a photomultiplier and a rear-end electronic component, the scintillation crystal is arranged in the electromagnetic shielding shell; the photomultiplier is mounted in the electromagnetic shielding shell on one side of the scintillation crystal; the rear-end electronic component is arranged in the electromagnetic shielding shell on one side, far away from the scintillation crystal, of the photomultiplier, and the rear-end electronic component is electrically connected with the photomultiplier; the electromagnetic shielding shell is provided with a beryllium window on the end face of one side of the scintillation crystal away from the photomultiplier. A heat dissipation mechanism capable of dissipating heat in the electromagnetic shielding shell is arranged in the electromagnetic shielding shell; through cooperation of the electromagnetic shielding shell and the heat dissipation mechanism, the equipment has good heat dissipation performance while giving consideration to the electromagnetic shielding effect, and the possibility that the equipment is damaged due to overheating in the long-term use process is reduced.

The invention mainly relates to the technical field of X-ray tubes, and provides a time-resolved pulse X-ray tube which mainly comprises a time-resolved pulse light source, an X-ray tube sleeve, a transparent glass window, an electron multiplier, a photocathode material, a bias power supply, a high-voltage power supply, an electron focusing lens, an X-ray target material and a beryllium window. The pulse light source excites the photocathode material to generate photoelectrons, the photoelectrons are multiplied in the electron multiplier under the action of the bias electric field, and the multiplied electrons are focused into electron beam spots smaller than 1 mm under the action of the high-voltage electric field and the electron focusing lens to bombard the anode target of the X-ray tube at a high speed. Therefore, time-resolved pulse X-rays are generated. The pulse X-ray tube has a very important application prospect in X-ray dynamic imaging.

The invention discloses a double-atmosphere electrified high-temperature in-situ environment device and an application method thereof. The device comprises a shell and a base, the shell comprises a cylinder body and a lower end plate; the cylinder body is provided with an opening; a beryllium window is arranged at the opening; the upper end and the lower end of the shell are respectively provided with a gas inlet and a gas outlet; the lower end plate is provided with a groove; a mica sheet is arranged in the groove; a heating sheet and a pressing sheet are arranged in the mica sheet; cooling plates are respectively arranged at the upper end and the lower end of the shell; and the lower end plate is mounted on the base through a mounting piece. The invention provides a double-atmosphere energized high-temperature in-situ environment device, and aims to provide a multifunctional in-situ experimental environment with high-temperature control, atmosphere adjustment, energized loading and X-ray perspective capabilities for a synchrotron radiation light source and a laboratory X-ray platform so as to meet in-situ test requirements under a multi-physics field coupling condition.

A focus lens and a flat field grating are arranged in a front beryllium window and a rear beryllium window of a vacuum chamber, and an IP plate is arranged behind the beryllium windows. The wavelength range measured by the spectrometer is 1.05 nm to 5 nm, and the resolution is 1000 near 2 nm. According to the invention, an X-ray CCD is replaced by the IP board, so that the problem that other spectrometers cannot perform multiple irradiation spectrum formation in a laser wake field acceleration scene is solved, multiple irradiation spectrum formation can be realized, and an X-ray absorption spectrum changing along with time in a dynamic ultrafast process can be obtained by utilizing the characteristics of ultrastrong and ultrashort laser.

This invention discloses a novel ceramic X-ray tube and its manufacturing method. The novel ceramic X-ray tube includes a beryllium window assembly and a cathode assembly. The beryllium window assembly includes a beryllium window support, within which a beryllium plate is sealed and fixedly connected. A target material is coated on the side of the beryllium plate closest to the cathode assembly. The cathode assembly includes a core assembly and a focusing sleeve. The core assembly includes a first electrode, a second electrode, and a ceramic inner tube. The focusing sleeve is fixedly mounted on the first electrode of the core assembly. Two Kovar wires are disposed within the focusing sleeve, respectively fixedly mounted on the first and second electrodes of the core assembly, and respectively fixedly connected to the two ends of a filament. A non-evaporable getter is fixedly mounted on the outside of the focusing sleeve. This invention has the advantages of reducing production steps, improving production efficiency, and facilitating mass production.

The utility model discloses a device for effectively protecting a vacuum beryllium window when the vacuum beryllium window is exposed to the atmosphere, which is characterized by comprising a beryllium sheet, a beryllium window flange, a vacuum pump, a nitrogen cylinder, a first angle valve, a second angle valve, a four-way joint and a needle valve, the beryllium sheet is welded on the beryllium window flange to form a beryllium window, and two ends are connected with the middle of bunch pipelines with different vacuum degrees; the two angle valves are mounted on bunching pipelines connected with the two ends of the beryllium window; a first interface of the four-way joint is connected with the nitrogen cylinder through a needle valve, a second interface is connected with the vacuum pump, a third interface is connected with the first angle valve through a corrugated pipe, and a fourth interface is connected with the second angle valve through a corrugated pipe. When the bunching pipeline needs to be exposed in the atmospheric environment, the vacuum degree of the bunching pipeline connected with the two ends of the beryllium window after nitrogen is filled into the bunching pipeline reaches the air pressure of the atmospheric environment through mutual matched operation of pre-pumping treatment of a vacuum pump, matching of an angle valve / a needle valve, protection measures of nitrogen filling and the like. The device can effectively prevent the beryllium window from being damaged.

The utility model discloses a single-energy X-ray tube based on a cold cathode electron source, which relates to the field of single-energy X-ray tubes, and comprises a target body part, a cathode electron source part and an X-ray tube part, the anode target is a cylinder formed by embedding high-Z metal (5) into the surface of copper (6), the secondary target is formed by depositing carbon nanotubes on a fluorescent material flat plate of the cathode (4), and the fluorescent material flat plate is used as a cold cathode; and the shell part comprises a vacuum shell (1), a lead seal (2) and a beryllium window (7). The single-energy X-ray tube solves the problem that an existing single-energy X-ray tube needs a complex electronic optical system.

The invention discloses a machining method of an arc-shaped beryllium window, and belongs to the technical field of beryllium material machining. The method comprises the steps that S1, a blank is blanked according to the size of the arc-shaped beryllium window, and a to-be-machined part is obtained; s2, inner and outer cambered surface rough machining is conducted on the to-be-machined part according to the shape of the arc-shaped beryllium window, and a first arc-shaped beryllium sheet is obtained; s3, a first tool is adopted to clamp the first arc-shaped beryllium sheet for outer arc surface machining, and a second arc-shaped beryllium sheet is obtained; s4, a second tool is adopted to clamp the second arc-shaped beryllium sheet for inner arc surface machining, and a third arc-shaped beryllium sheet is obtained; and S5, corner burr removal and surface cleaning are sequentially conducted on the third arc-shaped beryllium sheet, and the final arc-shaped beryllium window is obtained. The arc beryllium window machined through the method is high in profile tolerance and cambered surface radius size precision and high in stability.

The present application relates to the technical field of vacuum electron devices, and particularly relates to a high-vacuum-sealing X-ray tube beryllium window brazing structure, which comprises a welding base, the welding base has a thin-wall supporting step and a base thick matrix, a narrow groove is arranged at the junction of the thin-wall supporting step and the base thick matrix, the narrow groove is an annular groove, which is used for avoiding empty turning of a round corner, releasing welding thermal stress and accommodating excess brazing filler metal, a brazing filler metal ring is placed on the thin-wall supporting step, a beryllium window is arranged above the brazing filler metal ring, and the beryllium window is limited by the base thick matrix. The present application avoids welding seam cracking caused by stress concentration, and improves heat shock resistance and vacuum sealing reliability.

The invention discloses a high-temperature transmission-fluorescence dual-mode in-situ pool device suitable for XAFS, and relates to the technical field of material detection equipment.The high-temperature transmission-fluorescence dual-mode in-situ pool device comprises a pool body which is of a bin body structure with an opening in the top; the number of the first windows is at least three, the first windows are arranged on the pool body, two of the first windows are located at the opposite positions of the same straight line, and the included angle between one of the first windows and the two first windows located on the same straight line is 45 degrees; a beryllium window is detachably arranged in the first window; the sample rack is rotationally arranged in the tank body. The invention has the advantages that: the plurality of first windows are arranged on the cell body, two of the first windows are positioned at opposite positions of the same straight line, the included angle between one of the first windows and the two first windows positioned on the same straight line is 45 degrees, and the beryllium windows are detachably arranged in the first windows; and two modes can be switched, so that the experiment efficiency is improved by 100%.

The utility model discloses an X-ray emitter. The X-ray emitter is characterized in that an open window is formed in the peripheral wall of an X-ray shielding barrel in a penetrating manner; the X-ray tube is mounted in the X-ray shielding barrel; the separator is provided with a first window in a penetrating manner, a mounting table is arranged at the bottom of the separator, and the separator is made of a lead tetraoxide material; the beryllium window is mounted on the mounting table; wherein the isolation piece is installed on the open window, the beryllium window penetrates through the open window to be embedded into the X-ray shielding barrel, and a ray emitting port of the X-ray tube, the beryllium window and the first window are in one-to-one correspondence in position to form a ray emitting window. The isolation piece made of the lead tetraoxide material is designed, the X-ray emission window is manufactured in a rubber sealing gasket mode, the ray shielding requirement is met, the oil sealing function is achieved, insulativity is good, and installation is easy. And meanwhile, the end cover mounting structure made of the lead tetraoxide material is adopted, so that the X-ray tube is convenient to assemble, and an insulation design is also adopted.

The invention discloses a preparation method of an ultra-thin beryllium sheet, the ultra-thin beryllium sheet and a beryllium window welding method, and belongs to the fields of energy, aerospace, material analysis and high-energy physics, the preparation method of the beryllium sheet precisely and controllably thinns an original beryllium sheet of 190-200 microns to 70-80 microns through a specific chemical corrosion process, and a clean and activated surface is obtained. According to the beryllium window welding method, the ultra-thin beryllium sheet prepared through the method and a metal supporting ring (such as a nickel ring and a copper-nickel alloy ring) are assembled and welded through an optimized vacuum brazing process, and a high-strength and high-airtightness sealing structure is formed. The technical problem that an ultra-thin beryllium window is difficult to machine and reliably weld is solved, the prepared beryllium window can remarkably improve the transmittance of X rays, and the beryllium window is particularly suitable for the field of analysis with the high requirement for low-energy X-ray sensitivity.

The utility model relates to the technical field of beryllium window processing, and discloses beryllium window processing equipment, a clamping and limiting mechanism comprises a bearing plate, the surface of the bearing plate is fixedly connected with a bearing block, the inner side of the bearing block is clamped with one end of a hydraulic motor, the top end of the hydraulic motor is connected with a rotating shaft center, and the rotating shaft center is connected to the surface of a shaft rod; the bottom end of the shaft rod is connected with an adjusting shaft center, a mounting frame is mounted at the top end of the shaft rod, and a clamping plate is fixedly mounted on the outer side of the mounting frame. Through the work of the hydraulic motor, the hydraulic motor drives the rotating shaft center to synchronously contract, the rotating shaft center drives the shaft rod to contract, the bottom end of the shaft rod deflects around the adjusting shaft center, the mounting frame and the clamping plates which are connected with the top end of the shaft rod synchronously deflect, and the two groups of opposite clamping plates perform relative movement for clamping. And the beryllium window is clamped and limited through the clamping plate, and the polishing stability of the beryllium window is guaranteed.