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168 results about "Microchannel plate detector" patented technology

A micro-channel plate (MCP) is a planar component used for detection of single particles (electrons, ions and neutrons) and low intensity impinging radiation (ultraviolet radiation and X-rays). It is closely related to an electron multiplier, as both intensify single particles or photons by the multiplication of electrons via secondary emission. However, because a microchannel plate detector has many separate channels, it can additionally provide spatial resolution.

High-speed multi-photon detection system and method

The invention discloses a high-speed multi-photon detection system and method. The system comprises a detector and a signal processing circuit, wherein the detector is composed of a window plated with a photoelectric cathode, a micro-channel plate stack and an anode; a plurality of incident photons are converted into a plurality of photoelectrons by the photoelectric cathode, and the photoelectrons are converted into electron cloud by the micro-channel plate stack; the incident electron cloud is divided into multiple paths by three layers of staggered metal strip electrodes of the anode, and charge collection is carried out to obtain charge short pulses of each layer of electrode; the signal processing circuit converts the charge short pulses transmitted by the three layers of electrodes into digital pulse signals, obtains the centroid coordinates of the electron cloud from the digital pulse signals as the abscissa value, the ordinate value and the verification value of the incident photon position, combines the abscissa value, the ordinate value and the verification value based on the screening condition to obtain the target two-dimensional coordinates, and finally obtains the target two-dimensional coordinates. And transmitting to a terminal for imaging display. According to the invention, a plurality of synchronous photons can be detected, the overall counting rate of the detector is greatly improved, and the detection efficiency is improved.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Method for preparing profiled microchannel plate heat exchanger

A method for preparing a profiled microchannel plate heat exchanger, and belongs to the technical field of heat exchange. The method based on a combination of a plurality of methods formed by selective laser melting and micro electrical discharge machining can realize a profiled microchannel plate heat exchanger having large aspect ratio flow channels and closed profile section flow channels.
Owner:XI AN JIAOTONG UNIV

Plate hot-pressing device

The invention relates to the field of plate hot pressing, and discloses a plate hot pressing device which comprises at least one set of hot pressing plate assemblies. The phase change heat storage tank is in thermal coupling connection with the hot pressing plate assembly and used for storing waste heat; the plate preheating bin is arranged at the feeding end of the hot pressing plate assembly and is in hot connection with the phase change heat storage tank; the hot pressing plate assembly sequentially comprises a pressing plate base body plate layer used for supporting a load and transmitting pressure to the surface of a plate; the micro-channel plate layer is internally provided with double flow channels, heating fluid and recycling fluid flow in different flow channels respectively, captured waste heat is stored in the phase change heat storage tank, and the micro-channel plate layer is fixedly arranged on the heat transfer surface of the pressing plate base body plate layer; and the heat insulation protection plate layer is fixedly arranged on the non-heat-transfer surface of the micro-channel plate layer. According to the hot press plate waste heat recovery system, in-situ capture and utilization of waste heat in the plate pressing-cooling process are achieved by constructing a micro-channel heat exchange network in the hot press plate, and the waste heat recovery efficiency is remarkably improved.
Owner:ANHUI DIMI NEW MATERIAL CO LTD +1

Axial asymmetric microchannel plate structure based on amorphous silicon material and preparation method thereof

The invention discloses an axial asymmetric micro-channel plate structure based on an amorphous silicon material and a preparation method of the axial asymmetric micro-channel plate structure. The axial asymmetric micro-channel plate structure comprises a plurality of micro-channels arranged in a penetrating mode in the thickness direction of a device; each micro-channel is provided with an inlet section and an outlet section along the axial direction of the micro-channel plate; the channel geometric parameters of the micro-channels are different on the inlet section and the outlet section; or the equivalent electric fields of the micro-channels are distributed on the inlet section and the outlet section in a different manner; the inlet section of each micro-channel is used for regulating and controlling the initial incidence condition of electrons and the first effective interaction between the inlet section and the inner wall of the channel; collaborative design is carried out on geometrical morphology, electrical characteristics and material characteristics of the microchannels in the axial direction according to different physical stages of the electronic multiplication process corresponding to the structural level of the microchannels. According to the structure, higher controllability and consistency are obtained in the multiplication and transmission process of electrons in the channel on the structural level, and the structural rationality and design flexibility of the micro-channel plate serving as an electron multiplier are improved.
Owner:NORTH NIGHT VISION TECH

Micro-channel plate cooler for Stirling engine and cooling method

The invention discloses a micro-channel plate cooler for a Stirling engine and a cooling method, and the micro-channel plate cooler for the Stirling engine comprises a cooling shell and a heat exchange core body; the whole heat exchange core body is of an annular columnar structure and is formed by stacking a plurality of gas guide plates and a plurality of heat dissipation plates and then conducting vacuum diffusion welding. Hot fluid enters the hot runner of the air guide plate through the flow guide groove, and cold fluid enters the cold runner of the heat dissipation plate through the water inlet; the hot fluid and the cold fluid exchange heat in the plurality of air guide plates and the plurality of heat dissipation plates; and the hot fluid is discharged from the heat exchange core body through the second airflow groove. According to the micro-channel plate type Stirling engine cooler, the design concept of the micro-channel plate type Stirling engine cooler is adopted, the air guide plates and the heat dissipation plates in the heat exchange core are alternately stacked, the heat exchange area of unit volume can be remarkably increased, the compactness of the cooler structure can be improved, the heat exchange power is improved, and the heat exchange efficiency is improved. And a technical method is provided for stable operation of a next-generation megawatt underwater platform efficient Stirling cycle power system.
Owner:XI AN JIAOTONG UNIV

MCP image enhancement high-sensitivity detection system

The invention relates to the technical field of detection, and discloses an MCP image enhancement high-sensitivity detection system, which comprises a photoelectric cathode, which adopts a multi-quantum well structure and a surface plasma enhancement technology, is used for converting incident photons into primary electrons, and comprises a quantum well formed by gallium arsenide and gallium aluminum arsenide; a microchannel plate for amplifying primary electrons generated from the photocathode; the microchannel plate is coated with a superconducting thin film so as to reduce noise and improve electronic gain; various types of sensors include optical sensors, thermal imaging sensors, acoustic sensors, and chemical sensors. By adopting a multi-quantum well structure and a surface plasma enhanced photoelectric cathode, the spectral response and photoelectric conversion efficiency are remarkably improved, and the sensitivity and response speed of the system to non-specific wavelengths are enhanced. Meanwhile, the microchannel plate coated with the superconducting thin film effectively reduces the noise level, improves the signal definition and the image quality, and solves the high-gain limitation of a traditional system.
Owner:CHENGDU Z & Z OPTOELECTRONICS TECH

Ultra-compact ion mass spectrometer for space and laboratory plasma measurements

ActiveUS12476101B1Spectrometer detectorsStatic spectrometersMass analyzerParticle physics
Embodiments provide for an ion mass spectrometer. An example ion mass spectrometer includes a laminated collimator, a laminated electrostatic analyzer (ESA) positioned downstream from the laminated collimator, a magnetic sensor analyzer positioned downstream from the laminated ESA, and a position sensitive cross-delay anode (XDL) assembly having a micro-channel plate (MCP) and a cross delay-line (XDL) anode.
Owner:TRIAD NATIONAL SECURITY LLC

Apparatus and method for high-performance charged particle detection

A detection apparatus and method for detecting charged particles. The device relies on a detection assembly comprising microchannel plates. The useful surface of the microchannel plate device is maximized in time through the use of beam deflection means upstream of the detection front.
Owner:LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (LIST)

A flow channel plate, a method for manufacturing the same, and a primary and secondary hydrogen converter

The present disclosure relates to a flow channel plate, a preparation method thereof and a primary and secondary hydrogen converter, wherein Fe2O3 and / or Fe3O4 are deposited in the first micro-channel of the heat exchange plate by magnetron sputtering, the prepared flow channel plate has a catalyst layer with uniform thickness, and the catalyst layer has strong bonding force with the micro-channel plate material, which can avoid the problems of large heat fluid channel resistance and large hydrogen flow pressure drop caused by uneven catalyst filling thickness, and is conducive to improving the heat exchange efficiency of cold and hot fluids and the primary and secondary hydrogen conversion efficiency, while reducing space occupation.
Owner:NAT INST OF CLEAN AND LOW CARBON ENERGY

Photon counting imaging detector system based on hybrid anode

The application belongs to the technical field of photon imaging detection, and particularly relates to a photon counting imaging detection system based on a mixed anode. The system comprises a vacuum sealed tube detector composed of a window coated with a photocathode, a microchannel plate stack and a mixed anode, and a signal processing circuit. The photocathode is used for converting photons incident through the window into photoelectrons. The microchannel plate stack is used for converting the photoelectrons into electron clouds. The mixed anode comprises a strip anode and a delay line anode arranged orthogonally, and the mixed anode transmits the collected charge short pulses of each channel to the signal processing circuit. The signal processing circuit calculates the two-dimensional coordinates of the photons based on the collected charge short pulses of each channel, and then transmits the two-dimensional coordinates of the photons to a terminal for imaging display. The application provides a photon counting imaging detection system based on a cross strip-delay line mixed anode, and solves the problem that the existing position sensitive anode detector cannot simultaneously have high spatial resolution and high temporal resolution.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

X-ray communication device and method based on laser-driven matrix photocathode

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.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Vacuum and solid integrated lightweight digital solar blind ultraviolet device

The invention discloses a vacuum and solid integrated lightweight digital solar blind ultraviolet device, which comprises a glass input window, an ultraviolet photocathode, a microchannel plate, a digital readout circuit chip and a ceramic tube shell, the ultraviolet photocathode is attached to the front surface of the glass input window; the ultraviolet photocathode, the micro-channel plate and the digital readout circuit chip are arranged in a vacuum chamber of the ceramic tube shell; the micro-channel plate is positioned right below the ultraviolet photocathode; the digital readout circuit chip is located right below the micro-channel plate, and the device adopts a proximity packaging structure. The device is a high-resolution, integrated and lightweight vacuum digital solar blind device, does not need coupling, is integrated, realizes image digital output, is convenient to use and signal transmission, and is safe and reliable to use.
Owner:NORTH NIGHT VISION TECH

X-ray communication device and method based on laser driving matrix type photocathode

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.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Three-dimensional uniform-temperature liquid cooling plate, manufacturing method thereof and server heat dissipation system

The invention relates to a three-dimensional uniform-temperature liquid cooling plate, a manufacturing method thereof and a server heat dissipation system. The three-dimensional uniform-temperature type liquid cooling plate comprises a housing, which is internally provided with a sealed cavity and is provided with a cooling liquid inlet and a cooling liquid outlet; the three-dimensional uniform temperature plate is arranged in the sealed cavity of the shell, the three-dimensional uniform temperature plate comprises a bottom plate used for making contact with a heat source and a micro-channel plate which is connected with the bottom plate and extends towards the top face and the at least two side faces of the shell, and therefore a steam cavity internally containing a working medium is defined by the three-dimensional uniform temperature plate and the micro-channel plate; a micro-channel flow channel is formed in the outer side wall of the micro-channel plate; and a flow channel space for cooling liquid to flow is formed between the inner wall of the shell and the outer side wall of the micro-channel plate of the three-dimensional uniform-temperature plate, so that the cooling liquid flowing in from the cooling liquid inlet can flow through the area where the micro-channel flow channel is located, and heat is brought out from the cooling liquid outlet.
Owner:PREGIS NEW MATERIALS (SHENZHEN) PTE LTD

A drawer type integrated structure combined with a two-phase cold plate liquid cooling system

This invention discloses a two-phase liquid cooling system combining a drawer-type integrated structure with a flexible cold plate, relating to the fields of thermal management and two-phase liquid cooling technology. It includes a microchannel plate module, in which an internal microchannel network is etched into the flexible cold plate, followed by microchannel processing and surface treatment to generate a microchannel flexible cold plate; a liquid path connection module, which connects the assembled cold plate assembly to the inlet and outlet pipes of the two-phase coolant and includes a liquid path monitor to obtain a liquid path cold plate assembly; and a flow rate balancing module, which, based on the liquid path monitoring data, adjusts the flow rate and local pressure of the two-phase coolant in each microchannel in real time to obtain a balanced cold plate assembly. By embedding the microchannel flexible cold plate into the drawer-type support structure and pressing it tightly together, the system achieves both efficient heat conduction and close contact while maintaining the flexibility of being removable and replaceable, significantly improving assembly reliability and heat exchange efficiency.
Owner:TIANJIN TIER TECHNOLOGY CO LTD

Silicon-based MCP structure and manufacturing method thereof

The invention discloses a silicon-based micro-channel plate (MCP) structure and a manufacturing method thereof, relates to the technical field of semiconductor device manufacturing, and aims to solve the problems of poor high temperature resistance, insufficient etching precision, film layer quality defect and process synergy deficiency of a traditional glass-based / organic-based MCP. An 8-inch N-type monocrystalline silicon wafer is adopted in the structure, the thickness of the N-type monocrystalline silicon wafer is (250-350) + / -25 microns, micropores of 3-10 microns are evenly distributed, the hole pitch is 7-22 microns, the inclination angle is 6-12 degrees, the side wall roughness is smaller than or equal to 50 nm, the perpendicularity deviation is smaller than or equal to + / -0.5 degrees, an AlO or AlO / HfO / AlO electron multiplication layer with the thickness of 10-30 nm is prepared on the inner wall of a channel through ALD, and a Cr / Ni electrode with the thickness of 50-80 nm is plated on the surface. According to the method, the OES is used for monitoring SiFs in real time. According to the invention, the double targets of < = 30% of 1kg impact fracture rate and stable electron multiplication gain are achieved, the tolerable temperature reaches 800 DEG C, the secondary electron emission efficiency is improved by 25%, the production efficiency is improved by 20%, the cost is reduced by 15%, and the method is suitable for the high-sensitivity detection fields of night vision imaging, particle detection and the like.
Owner:ZHIWEI PHOTONIC DEVICES (KUNMING) CO LTD

Laser speed measuring device

The invention discloses a laser speed measuring device. According to the laser speed measurement device, a photoelectric cathode is connected with a micro-channel plate through a vacuum bonding technology, and the photoelectric cathode is used for converting a laser signal into a photoelectronic signal and transmitting the photoelectronic signal to the micro-channel plate; the micro-channel plate is connected with the fluorescent screen through a vacuum bonding technology, and the micro-channel plate is used for carrying out electron multiplication processing on the photoelectron signals and transmitting enhanced electronic signals to the fluorescent screen; the fluorescent screen is connected with the nano optical fiber taper coupling structure through a vacuum bonding technology, and the fluorescent screen is used for sending a visible light signal to the nano optical fiber taper coupling structure; the nano optical fiber taper coupling structure is connected with the CCD chip, and the nano optical fiber taper coupling structure is used for transmitting the visible light signal to the CCD chip; the CCD chip is used for receiving the visible light signal, converting the visible light signal into a digital signal and transmitting the digital signal to the control module so as to determine speed data of the laser signal according to the digital signal. According to the invention, the transmission efficiency of the laser signal is improved, and the determination precision of the speed data of the laser signal is improved.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO XUZHOU POWER SUPPLY CO

Full-electrostatic miniaturized scanning electron microscope lens suitable for lunar surface in-situ detection

The invention discloses an all-static miniaturized scanning electron microscope lens suitable for lunar surface in-situ detection, and belongs to the technical field of lunar detection. Comprising an electronic gun, a condenser module, a micro-channel plate detector and an objective lens system which are sequentially fixed along an axis. The lens adopts a full-electrostatic system, and through holes are formed in the collecting lens module and the objective lens system so as to introduce a natural vacuum environment on the lunar surface. A multifunctional electrode structure is innovatively designed in the collecting lens module, so that the collecting lens has a diaphragm function; and an electrostatic deflector capable of synchronously realizing scanning deflection and anastigmatism is integrated in the objective lens system. Through the full electrostatic design and the lunar surface vacuum introduction structure and function integration and compactness design, the magnetic flux leakage and heat loss of a traditional electromagnetic lens are effectively overcome, the dependence on complex vacuum equipment is reduced, the system integration degree is improved, the requirements of lunar surface detection loads on miniaturization and light weight are met, and the application prospect is wide. And meanwhile, the structural reliability of the system in emission vibration and lunar earthquake environments is improved.
Owner:NAT SPACE SCI CENT CAS

Solid edge glass material for controlling deformation of ultra-thin microchannel plate and application thereof

The application provides a solid edge glass material for controlling deformation of an ultrathin microchannel plate and an application thereof, and the solid edge glass material comprises the following components in percentage by mass: SiO2 60-70%; Na2O 8-12%; K2O 5-10%; MgO 2-8%; CaO 2-8%; and BaO 1-5%. The coefficient of thermal expansion of the solid edge glass material is higher than that of the effective area skin glass material, and the softening point of the solid edge glass material is lower than that of the effective area skin glass material. The single material solid edge made of the solid edge glass material forms a tensile stress on the effective area before hydrogen reduction of the microchannel plate, offsets the change trend of the volume and the coefficient of thermal expansion of the effective area skin glass during the hydrogen reduction process, and solves the deformation problem of the ultrathin microchannel plate during the hydrogen reduction process.
Owner:NORTH NIGHT VISION TECH +1

Rhenium-based atomic layer deposition process for detector device manufacture

Manufacturing a detector device such as a microchannel plate (MCP) includes using a first atomic layer deposition (ALD) process with first precursor materials to deposit a resistive layer on a substrate and thereby form a resistive-coated substrate, the first precursor materials including a conductive rhenium material and an insulative aluminum material. The resistive layer is deposited as interspersed conductive and insulative regions of a rhenium constituent and an aluminum constituent respectively in a predetermined ratio. A second ALD process with second precursor materials is used to deposit an emissive layer on the resistive-coated substrate, the emissive layer being constituted to generate electrical carriers in use of the detector device to be sensed by external sensing circuitry as detected events. The first ALD process is performed at a deposition temperature sufficiently above 200° C. to obtain a dark-current contribution of the resistive layer of less than about 600 Hz / cm2.
Owner:UCHICAGO ARGONNE LLC +1

Microchannel plate manufacturing method based on mold pouring method and microchannel plate

The invention relates to a micro-channel plate manufacturing method based on a mold pouring method and a micro-channel plate. The method comprises the steps that a silicon microchannel array substrate is placed on a metal mold material, and holes of the silicon microchannel array substrate face downwards; based on a crucible and a vacuum hot melting filling device, liquefying a metal mold material and filling the metal mold material into the silicon micro-channel array substrate; cooling to realize metal curing to obtain a metal mold precursor, and corroding silicon to obtain a metal mold; putting the high borosilicate glass material and the metal mold into a crucible, and filling the high borosilicate glass material into the metal mold based on a vacuum hot melting filling device; cooling to obtain a glass-metal complex, and corroding a metal material to obtain a micro-channel plate substrate; carrying out hydroxylation treatment; and preparing a dynode on the micro-channel plate substrate, and performing annealing treatment to obtain the micro-channel plate. The microchannel plate with a high softening point and high purity can be manufactured, the yield is high, noise is low, exhaust in the channel is sufficient, and the service life of the image tube is prolonged.
Owner:CHANGCHUN UNIV OF SCI & TECH +1

Micro-channel plate heat exchange structure and heat exchanger

This utility model discloses a microchannel plate heat exchanger structure and heat exchanger. The microchannel plate heat exchanger structure includes a first mounting plate, a second mounting plate, and multiple stacked basic cells disposed between the two. Each basic cell includes a first and a second heat exchange unit, and metal partitions are provided between the two and adjacent basic cells. The capillary array of the heat exchange unit is bilaterally symmetrical and shares a common working fluid inlet, which can uniformly distribute the working fluid, achieving the flow distribution and heat exchange effect of two parallel microchannel heat exchangers. Moreover, bilateral countercurrent heat exchange can be achieved between adjacent heat exchange units. The heat exchanger of this utility model realizes the integration of "tube box-core" and "flow distribution-heat exchange". Compared with the traditional parallel connection of two heat exchangers, it reduces volume and weight, achieves uniform flow distribution, and reduces some external branch pipes and valves, thereby reducing hardware costs, reducing leakage risk, and enhancing the pressure resistance and service life of the heat exchanger.
Owner:HENGSHUI KEHENGFA POWER EQUIP CO LTD

Microchannel plate gain uniformity testing device and method

The invention discloses a micro-channel plate gain uniformity testing device and method. The device comprises an incident light source, a pinhole template located on a light path of the incident light source, a photoelectric cathode, a to-be-tested micro-channel plate assembly, a collection anode, and a processing electronics and data processing system electrically connected with the collection anode. The incident light source is monochromatic parallel light, and the hole central axis of the pinhole template is perpendicular to the plane of the photoelectric cathode and is perpendicular to the input surface of the micro-channel plate assembly to be measured; the electric displacement platform is used for adjusting the positions of the photoelectric cathode, the to-be-measured micro-channel plate assembly and the collection anode; and the processing electronics and data processing system is positioned outside the vacuum cavity. According to the scheme, the gains and differences of different areas of the micro-channel plate assembly, especially the gain characteristics and differences in a saturated working mode, can be accurately obtained, and the gain uniformity of the to-be-measured micro-channel plate assembly in the whole effective area can be accurately calculated.
Owner:XIAN INST OF OPTICS & PRECISION MECHANICS CHINESE ACAD OF SCI

Furnace pressure control system and control method of gas melt pressure forming furnace

The invention relates to a furnace pressure control system and method for a gas melt pressure forming furnace, and the system comprises a monitoring device which is used for monitoring and collecting the pressure and vacuum degree in a hearth in real time, and transmitting the pressure and vacuum degree in the hearth to a communication terminal; the communication terminal compares the received pressure in the hearth with a preset furnace pressure standard interval, the execution device controls the pressure controller to adjust the pressure regulating valve according to the comparison result, the pressure in the hearth is adjusted in a gas releasing or gas supplementing mode, and the pressure in the hearth is kept within the preset furnace pressure standard interval; and the communication terminal compares the received vacuum degree numerical value with a preset vacuum degree alarm value, and according to a comparison result, the execution device controls the power supply main switch to be turned off and then stops the work of the gas melt pressure forming furnace. By the adoption of the furnace pressure control system, the furnace pressure is monitored and controlled in real time, the quality stability of the blank plate of the micro-channel plate in the forming process can be improved, and therefore the product quality is effectively improved.
Owner:CHINA BUILDING MATERIALS ACADEMY CO LTD

Crossed strip anode photon counting imaging detector splicing system and splicing method

ActiveCN122237772BSpectral bandsPhotocathode
The present application relates to the technical field of spectral imaging detection, and particularly relates to a cross-bar anode photon counting imaging detector splicing system and a splicing method, which respectively cover ultraviolet, visible and near-infrared bands, each detector unit comprises a vacuum sealed tube composed of a glass window coated with a photocathode, a cylindrical micro-channel plate stack, a resistance anode and a cross-bar anode, and a position reading circuit, wherein the curvature radius of the cylindrical MCP stack is matched with the focal plane curvature radius of the Rowland circle spectrometer to improve the spectral resolution. Four detector units are connected in one-to-one correspondence to form a long strip electrode array in the direction perpendicular to the spectral imaging direction, and the position reading circuit is used for processing charge pulses to determine the electron cloud centroid position. The curvature radius of the cross-bar anode single-photon imaging detector unit can be matched with the curvature radius of the cylindrical focal plane of the Rowland circle spectrometer, the spectral resolution of the spectrometer is improved, and continuous imaging of a wide spectral band of 115 nm to 900 nm is realized.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Compact, high temporal resolution microchannel plate assembly and method of making same

The application discloses a kind of compact structure, high time resolution microchannel plate assembly, it can be applied to analytical instrument such as mass spectrometry detection field.The microchannel plate assembly includes: output electrode column, fixed screw, insulating substrate, anode cover plate, anode plate, output electrode plate, microchannel plate, metal shielding base, positioning sleeve, wherein, output electrode plate and output electrode column are connected to each other and constitute the output electrode of microchannel plate;Anode plate is connected to each other by plane anode pattern and conical receiving terminal and constitutes;Microchannel plate input surface is plated with high secondary electron emission film, to realize the high detection efficiency of microchannel plate assembly.Insulating substrate, anode cover plate, anode plate, output electrode plate, microchannel plate and metal shielding base are fixed by fixed screw and become integrated form, with compact structure, high time resolution characteristics.
Owner:NORTH NIGHT VISION SCI&TECH (NANJING) RES INST CO LTD

Mass spectrometry apparatus

A ion detector for a mass spectrometry apparatus is disclosed. The ion detector comprises: a microchannel plate (MCP), a scintillator, and a photomultiplier (PMT), the MCP comprising a MCP assembly and an isolation part fixed to the MCP assembly, the MPC assembly being configured to convert ions into electrons, the scintillator being configured to convert electrons into light, and the photomultiplier being configured to convert the light into an electrical signal. The isolation part of the MCP comprises at least one element, called isolation element, made of ceramic.
Owner:BIOMERIEUX INC

A radiation detector

The application discloses a novel ray detector, characterized in that the novel ray detector comprises a Cerenkov radiation material window, a photocathode surface plated on a light exit surface of the Cerenkov radiation material window, a microchannel plate and a readout circuit board; wherein the Cerenkov radiation material window is a glass optical fiber panel, used for receiving incident gamma rays and inputting Cerenkov light generated by the incident gamma rays into a fiber core to the photocathode surface; the photocathode surface is used for converting the Cerenkov light into photoelectrons and transmitting the photoelectrons to the microchannel plate through a vacuum electric field; and the microchannel plate is used for inputting the received photoelectrons into the readout circuit board after amplification by multiplication. The application can realize better position resolution.
Owner:INST OF HIGH ENERGY PHYSICS CHINESE ACAD OF SCI

Microchannel plate glass and method of making same

This invention discloses a microchannel plate glass and its preparation method, relating to the field of special glass materials technology. The microchannel plate glass includes a skin glass and a core glass. The skin glass includes P2O5, V2O5, BaO, La2O3, Li2O+Na2O+K2O, ZrO, Al2O3 and Al(OH)3, PbO, and Fe2O3. The core glass includes P2O5, ZnO, Al2O3 and Al(OH)3, SiO2, CaO+MgO, and BaO. This invention overcomes the shortcomings of traditional lead-containing silicate glass as a substrate material for MCP microporous arrays. Furthermore, the microchannel plate made of semiconductor glass does not require hydrogenation heat treatment and does not exhibit this "cation feedback" phenomenon. Compared to microchannel plates made of ordinary glass, the bulk conductivity microchannel plate can maintain stable performance over a long period. By screening specific material components and optimizing the ratio of each component, the skin glass and core glass can simultaneously possess a stable network framework and a high softening temperature, while achieving a precise match between their coefficients of thermal expansion and high-temperature viscosity coefficients.
Owner:SHANDONG SANHUI GLASS CO LTD

High-efficiency X-ray imager with built-in transmission line and preparation method thereof

The invention provides a high-efficiency X-ray imager containing a built-in transmission line and a preparation method of the high-efficiency X-ray imager. A conductive strip is arranged on the input surface of a lower micro-channel plate, conductive strips are arranged on the input surface and the output surface of an upper micro-channel plate, and the output surface of the upper micro-channel plate is oppositely attached to the input surface of the lower micro-channel plate; the conduction band strip units on the two faces are in one-to-one correspondence, and the micro-channels of the two micro-channel plates are in butt joint to form the micro-channel plate assembly. According to the micro-channel plate assembly, the two groups of micro-channels are in butt joint with each other, the gain is improved, detection of weak electronic signals is met, meanwhile, the design of the conductive strips and the built-in transmission lines formed by the conductive strips is combined, multi-mode polaritons are excited under the single frequency, and the requirement for parallel processing of multi-dimensional information is met.
Owner:NORTH NIGHT VISION SCI&TECH (NANJING) RES INST CO LTD