11results about "Radiation particle tracking" patented technology

This invention discloses a muon detector and a muon localization method and track reconstruction method, comprising a first scintillator layer, a second scintillator layer, and a third scintillator layer. The first scintillator layer includes multiple annular first scintillators stacked vertically in a cylindrical shape. The second scintillator layer includes multiple elongated second scintillators spirally and tightly wound around the outer wall of the first scintillator layer. The third scintillator layer includes multiple elongated third scintillators extending vertically, distributed circumferentially along the outer wall of the second scintillator layer. Compared with the prior art, this invention can improve the axial positioning accuracy of the muon detector, increase the detection range, and shorten the imaging time without increasing the complexity of the muon detector. Furthermore, it can perform geometric consistency discrimination for false triggering, crosstalk, or inconsistent combination events, thereby improving positioning stability and reliability.

The application provides a synchronous accelerator multi-harmonic beam trajectory reconstruction method and system, and relates to the technical field of accelerators. The method comprises the following steps: obtaining an accelerating cavity high-frequency signal of the synchronous accelerator, so as to generate a frequency-synchronized reference waveform according to the accelerating cavity high-frequency signal; setting a phase trigger window based on the reference waveform, so as to control the synchronous acquisition of beam signals of a full ring of the synchronous accelerator by a beam diagnosis device of the full ring; performing time domain analysis on the beam signals to obtain an effective beam signal interval, so as to calculate position data of the beam signals based on the effective beam signal interval; and reconstructing the motion trajectory of the beam according to the position data of the beam signals, which can accurately identify and associate the data of the same beam in the multi-harmonic acceleration process.

The application discloses a silicon pixel in-diameter track detector service structure with high heat dissipation capacity and high integration degree and a mounting method thereof, which comprises a service bucket, a four-claw flange, a fixing ring, a cable output bucket, a composite sleeve ring and a heat dissipation bucket. The service bucket is composed of a variable-diameter conical half bucket, the front end of which is connected with the composite sleeve ring, and the rear end of which is connected with the fixing ring; the claw arms of the four-claw flange are rigidly connected with the service bucket; the cable output bucket is quickly assembled with the fixing ring and is used for combing and fixing cables and cooling pipelines; the heat dissipation bucket is fixed to the inner wall of the service bucket, and a closed flow channel is arranged in the heat dissipation bucket and forms a closed water cooling cavity with the inner wall of the service bucket. The three-section coaxial heat dissipation bucket and the water cooling circulation loop are adopted in the application, the variable-diameter service bucket and the annular hollow combing plate are combined, the unification of high heat dissipation capacity and high integration degree is realized, the limit performance requirement of a super silicon in-diameter track detector can be met, and the stable and high-precision operation of the detector in an extreme environment with high brightness and strong radiation can be ensured.

This invention relates to a data processing method for single-event multi-track detection based on a time projection chamber, belonging to the field of particle track analysis technology. The method includes the following steps: S1: Denoising preprocessing of the original points; S2: Reconstructing and correcting all tracks in the event using three-dimensional iterative Hough transform and weighted least squares method, outputting the linear equation of each track; S3: For a given straight line, calculating the distance from all points in the event to the straight line, setting a distance threshold, and considering points less than the threshold as points located on the straight line, thereby achieving track splitting; S4: Overfitting processing of the split tracks. This invention improves the processing effect of time projection chamber and other particle track detectors on single-event multi-track detection, providing a practical solution for high-energy particle multi-track detection and identification.

The application relates to a kind of beam transverse operating point measurement method and device, method includes: in time sequence to Schottky signal sampling;Current frame power spectrum is obtained based on current frame data;Unified physical frequency axis under current frame target power spectrum is obtained based on current frame power spectrum;Adaptive smoothing filtering is carried out to obtain the smoothed target power spectrum of current frame;The frequency coordinate of the smoothed target power spectrum of current frame is normalized to dimensionless operating point coordinate to obtain the normalized power spectrum of current frame;The normalized power spectrum of current frame is resampled to obtain the resampled power spectrum of current frame;Determine the reference power spectrum of current frame and the reference transverse operating point of current frame;Determine the candidate transverse operating point of current frame;The reference transverse operating point and candidate transverse operating point of each frame in frame sequence are determined by current frame, the preceding several frames of the current frame, and the optimal estimation value of the transverse operating point of the current frame is determined.

The present application relates to nuclear radiation detection and nuclear electronics technical field, specifically to a kind of radiation field dose self-discrimination detection system and method;It contains double-channel signal acquisition circuit, phase space mapping and manifold curvature entropy analysis module;System utilizes original signal and analog differential signal to construct real-time phase space trajectory, and introduces reference particle attractor model;Its core is to calculate trajectory manifold curvature entropy and carry out hierarchical discrimination: low entropy is determined as single particle, high entropy is determined as accumulation distortion and triggers inverse calculation repair process to deconstruct it;Finally, the energy is updated dose library by phase space closed loop volume integral calculation;The present application uses hardware differentiation to avoid digital quantization noise, ensures that trajectory topological surface is smooth, and significantly improves the measurement accuracy under high dynamic range.

The present specification provides a detector for an X-ray imaging system. The detector includes at least one high resolution layer having high resolution wavelength-shifting optical fibers, each fiber occupying a distinct region of the detector, at least one low resolution layer with low resolution regions, and a single segmented multi-channel photo-multiplier tube for coupling signals obtained from the high resolution fibers and the low resolution regions.

An electronic tracking system is provided for solving the problem of electron trajectory loss in long-distance electron transport. A short-distance vacuum target channel is built to simulate the vacuum motion environment of electrons under the action of an external magnetic field (the geomagnetic field). The fluorescent position of the target surface inside the target channel is captured by a camera and uploaded to the host computer for analysis, thereby realizing the tracking of the electron trajectory under the action of the geomagnetic field. First, the motion speed information of the electrons at the accelerator outlet is calculated according to the electron energy. Then, the local geomagnetic field information is measured by a magnetometer. Subsequently, the conversion relationship between the reference coordinate system and a new coordinate system with the direction of the external magnetic field vector as the coordinate axis is established according to the coordinate transformation principle. Finally, the influence of the external magnetic field on the moving electrons is calculated in the new coordinate system, the position of the target electron at the terminal point is determined, and the coordinate transformation is performed to obtain the target electron position in the reference coordinate system. According to the appropriate target electron position, the key indicators such as the length and diameter of the vacuum target channel can be determined.

Systems and methods for detecting a crosswalk location are disclosed. A crosswalk location can be detected by determining at least two colored lines on a road surface and then combining the at least two colored lines on the road surface into a grouping of related elements. The grouping of related elements can be classified as a crosswalk (or in some embodiments, a type of crosswalk) based on attributes of the grouping of related elements, where the attributes of the grouping of elements include a distance between the at least two colored lines and an orientation of the grouping of related elements on the road surface.

This invention discloses a method, apparatus, and storage medium for measuring the fidelity of the maximum entangled state of two ions. Utilizing the exchange symmetry of the coefficient matrix in the maximum entangled state of two ions, without performing independent addressing operations on individual ions, the same global single-bit unitary operation is applied synchronously to both ions. This transforms the maximum entangled state of the two ions into a quantum state physically equivalent to the target Bell state. The transformation process relies solely on global operations, avoiding the errors and complexity caused by single-ion addressing. Furthermore, it eliminates the need for a global rotation operation around an axis; only two standard global rotation operations are required to convert the maximum entangled state into the target Bell state, reducing the operational depth and further improving the accuracy of fidelity measurement.

A positioning system that is capable of stable, highly accurate positioning using lightweight equipment is provided. A positioning system includes a reference detector, a receiving detector, a communication unit for communicating between the reference detector and the receiving detector, and a calculation unit, wherein each of the reference detector and the receiving detector is configured to detect a zenith angle and an azimuth angle of the incident muons; wherein the calculation unit is configured to calculate a relative position of the receiving detector with respect to the reference detector based on at least the zenith angle and the azimuth angle; and wherein each of the reference detector and the receiving detector comprises an internal clock configured to continuously record a time point when a muon is incident, and the calculation unit is further configured to synchronize internal clocks of the reference detector and the receiving detector based on the continuously recorded time information.