12 results about "Particle detector" patented technology

The application discloses a thin window sealing method of a particle detector, which comprises the following steps: arranging a clamp on a device support, clamping a thin window by using a sealing assembly, clamping the sealing assembly by using the clamp, fixing the clamp on the device support, and welding the sealing assembly by using a welding device, wherein the clamp is continuously and uniformly rotated during the welding until the thin window to be sealed is completely sealed in the sealing assembly. The clamp is used to press the sealing assembly and the thin window clamped by the sealing assembly, so that the tightness and the sealing property of the sealing assembly during subsequent welding are guaranteed. The clamp is fixed to fix the sealing assembly and the thin window to be sealed, so that the position stability of the sealing assembly and the thin window to be sealed during the welding of the sealing assembly is guaranteed. Meanwhile, the clamp is continuously and uniformly rotated during the welding of the sealing assembly, so that the welding points present the shape of fish scale welding, the uniformity of the welding points is guaranteed, the structural strength of the welding position is improved, and then the structural strength of the sealed thin window is improved, so that the thin window is not prone to deformation.

An integrated device for sieving, crushing and cleaning materials, characterized in that it comprises: a conveyor belt (4) at the exit end of which a first particle detector (41) is arranged for monitoring the material on it; a sieve drum (2) in the interior of which a guide hopper (22) and multi-stage roller pair arrangements are arranged successively from top to bottom, wherein a second particle detector (9) is provided below the last roller pair arrangement; the sieve drum (2) is arranged above the inlet of the conveyor belt (4); wherein uniformly distributed conveying trays (21) are arranged on the inner circumferential surface of the sieve drum (2), and the conveying trays (21) serve to convey the material above the guide hopper (22).

The utility model discloses an inhaled type detects the copper foil epoxy glass cloth laminated board pyrolysis particle detector relates to laminated board detection technical field, including box, the upper right -hand side fixed connection of box has the filter tank, the left lower extreme fixed connection of filter tank has the air intake pipe, the upper left -hand side fixed mounting of box has the air pump, the output fixed connection of air pump has the control pipe, the first solenoid valve is fixedly installed on the control pipe, the inside lower extreme fixed mounting of box has the detection module, the right side fixed connection of detection module has the exhaust pipe, the left side fixed connection of detection module has the fixed pipe. The utility model discloses the filter tank, air intake pipe, air pump, control pipe, first solenoid valve, fixed pipe, exhaust pipe and fan can be effectively cleaned to the inside sensor, prevent the small particle attached on the surface of sensor and reduce the sensitivity of sensor, avoid the test result of detector and actual result and produce the big deviation.

The present application relates to the field of nuclear power equipment, and more particularly to an air filter pressure reducing valve performance detection device and method. The device comprises: a first module interface and a second module interface for connecting with the air filter pressure reducing valve; a gas source tank, the outlet pipeline of which is sequentially connected with a stop valve, a smoke generator, a pressure regulating valve, a first standard pressure gauge and the first module interface; a manual regulating valve, the inlet pipeline of which is sequentially connected with a second standard pressure gauge, a gas particle detector and the second module interface; and a gas flow meter is installed on the outlet pipeline thereof. The air filter pressure reducing valve performance is detected by using the air filter pressure reducing valve performance detection device. The air filter pressure reducing valve can be detected from the filtering effect of compressed air, the output pressure stability and the influence of the inlet pressure fluctuation on the outlet pressure. The detection is comprehensive and convenient to use.

The present application relates to the field of particle physics experiment data acquisition and processing, and specifically discloses an online AI triggering and data compression method and device for particle detector readout electronics, wherein the method realizes real-time feature extraction on the output pulse signal of the detector, uses a pre-trained fully connected neural network model to realize high-precision triggering decision, adopts a compression strategy combining adaptive quantization and entropy coding to compress effective event data, and simultaneously introduces a quality feedback mechanism based on peak signal-to-noise ratio to form a closed-loop control. The present application realizes intelligent collaborative processing of triggering decision and data compression, significantly improves the event selection efficiency and data compression quality under the premise of ensuring data physical integrity, and provides an efficient real-time data processing solution for high-count-rate particle physics experiments.

This invention belongs to the field of superconducting cable manufacturing technology and discloses a PTFE-wrapped insulation layer for ultra-low temperature compensated superconducting coaxial cables and its forming method. The insulation layer is disposed between the inner and outer conductors of the superconducting coaxial cable, and consists of, from the inside out, a high-density PTFE dense inner liner, a microporous PTFE dielectric compensation layer, and a highly oriented PTFE stress buffer layer. The microporous PTFE dielectric compensation layer has a gradient overlap ratio distribution along the axial direction. The forming method of the PTFE-wrapped insulation layer includes inner conductor pretreatment, three-layer step-by-step wrapping, and overall heat treatment, forming the integral structure through selective interfacial melting and fusion. This invention can compensate for the characteristic impedance drift of cables during the cooling process from room temperature to ultra-low temperatures, maintain dielectric properties and structural stability, reduce signal reflection, and improve resistance to thermal cycling fatigue. It is suitable for superconducting signal transmission cables used in quantum computers and high-energy particle detectors.

A particle detection system may include a laser optical source providing a beam of electromagnetic radiation, one or more beam shaping elements for receiving the beam of electromagnetic radiation, an optical isolator disposed in the path of the beam, between the laser source and the one or more beam shaping elements, a particle interrogation zone disposed in the path of the beam, wherein particles in the particle interrogation zone interact with the beam of electromagnetic radiation, and a first photodetector configured to detect light scattered and / or transmitted from the particle interrogation zone, a second photodetector configured to monitor power of the beam, and a controller configured to adjust the beam power based on a signal from the second photodetector, wherein the optical isolator is configured to filter optical feedback from the particle detection system out of an optical path leading to the second photodetector. The particle detection system may be configured to have a lower detection limit of 5 nm to 50 nm effective particle diameter. The laser optical source may have a laser power of 300 milliwatts to 100 watts.

This invention discloses an integrated silicon carbide ΔE-E telescope high-energy particle detector and its fabrication method. Using heavily doped p-type silicon carbide as a substrate, a p-type silicon carbide buffer layer and an L-shaped N-type silicon carbide epitaxial layer are fabricated on top of the substrate. A heavily doped N-type silicon carbide structure is placed on top of the L-shaped N-type silicon carbide epitaxial layer. A columnar heavily doped N-type silicon carbide structure connects to the top of the device around the L-shaped N-type silicon carbide structure. An N-type silicon carbide epitaxial layer is fabricated within the region enclosed by the heavily doped N-type silicon carbide structure and the columnar heavily doped N-type silicon carbide structure. A heavily doped p-type silicon carbide structure is placed on top of the N-type silicon carbide epitaxial layer. An upper electrode is placed on the heavily doped p-type silicon carbide, and lower electrodes are placed on the heavily doped p-type silicon carbide structure and the columnar heavily doped N-type silicon carbide structure, respectively. An insulating dielectric protective layer is filled between the two lower electrodes and outside one of the lower electrodes. The detector of this invention meets the requirements of radiation resistance, high temperature resistance, and miniaturization.

The application relates to the technical field of thin film deposition equipment processing, and discloses a shower head particle cleaning and detection integrated device and method. The integrated device comprises a bearing mechanism, a temperature control mechanism, a ventilation mechanism, a particle detector and a driving mechanism. The bearing mechanism comprises a base, a first valve and a second valve. The base is used for placing the shower head and has an open opening. The shower head is placed in the sealed opening of the base, and the first valve and the second valve are communicated with the opening. The temperature control mechanism comprises a temperature rising disc and a power supply. The temperature rising disc can be in close contact with the shower head to rise the temperature. The ventilation mechanism is used for ventilating the shower head. The particle detector is communicated with the second valve. The driving mechanism is used for driving the bearing mechanism or the temperature control mechanism, so that the temperature rising disc and the shower head have close and far motion states. In the application, the shower head is heated to a first predetermined temperature to simulate the actual use scene of the shower head, the detection precision is effectively improved, the cleaning and detection integration can be realized through the conversion of the first valve and the second valve, and the production and processing convenience is improved.

1. Name of the product in this design: Pyrolysis Particle Detector. 2. Purpose of this design: This design is used to detect the concentration of particulate matter generated by heating or combustion in electrical distribution cabinets, thereby playing a role in fire prevention and early warning. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

Particle detector for spatially resolved detection of high-energy particles, comprising a first position-sensitive diode (PSD), wherein the first PSD has a first substrate with a first sensor surface and an opposite first back surface, a second PSD, wherein the second PSD has a second substrate with a second sensor surface and an opposite second back surface, wherein the first PSD and the second PSD are arranged along a common axis, the common axis passing through the first sensor surface and the second sensor surface.