Accumulation event detection and reconstruction method and system
An event detection and event technology, applied in X-ray energy spectrum distribution measurement, etc., can solve problems such as false triggering, inaccurate and limited rising edge capture
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
example 1
[0123] The invention proposes a method and system for detecting and reconstructing accumulation events. The involved parameters and filter design need to be adjusted according to the characteristics of the acquired data to achieve good energy resolution performance and short pulse duration. Here are the parameters for processing data in this application example:
[0124] The actual system used in step (1) used LYSO crystal and Hamamatsu R9800PMT. The crystal size is 16.5mm x 16.5mm x 10.0mm. The coupling surface of the crystal and the PMT is 100 surfaces, except for the coupling surface, the other surfaces are wrapped with Teflon tape. The sampling rate of the data acquisition system is 50Ghz, and the bandwidth is 16Ghz. Positrons with a radiation source of 511 keV annihilate gamma photons. The average pulse rise time is about 2 ns, and the time constant is 42.5497 ns after the falling edge is fitted with an exponential. Step (1) Obtain the response model of the scintilla...
example 2
[0128] Here are the parameters for processing data in this application example 2:
[0129] The actual system used in step (1) uses LYSO crystals such as Figure 11 and FM300035SIPM. The crystal size is 2.0 mm x 2.0 mm x 10.0 mm. The coupling surface of the crystal and the PMT is 100 surfaces, except for the coupling surface, the other surfaces are wrapped with Teflon tape. The sampling rate of the data acquisition system is 50Ghz, and the bandwidth is 16Ghz (such as Figure 10 ). Positrons with a radiation source of 511 keV annihilate gamma photons. The average pulse rise time is about 5ns. 50 pulses are used for average operation, and then exponential fitting is performed, and the fitted model is used as the response model.
[0130] Step (2.1) employs V l =0.060V, V t =0.006V. Through the deconvolution of step (2), the accumulated data is roughly separated.
[0131] Step (3.2) employs V u =6Vns. Further separate stacked data.
example 3
[0133] The parameters for processing data in this application example 3 are listed here:
[0134] The actual system used in step (1) uses LaBr crystal and Hamamatsu R9800PMT. The crystal size is 3.5mm x 3.5mm x 5.0mm. The coupling surface of the crystal and the PMT is 100 surfaces, except that the coupling surface is a light guide, and the other surfaces are sealed with metal. The sampling rate of the data acquisition system is 50Ghz, and the bandwidth is 16Ghz (such as Figure 10 ). Positrons with a radiation source of 511 keV annihilate gamma photons. The average pulse rise time is about 2ns.
[0135] Step (2.1) employs V l =0.100V, V t =0.010V. Through the deconvolution of step (2), the accumulated data is roughly separated.
[0136] Step (3.2) employs V u =10Vns. Further separate stacked data.
[0137] The method and system of the present invention can be used in nuclear detection, nuclear analysis, and nuclear medicine instruments under the background of high cou...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com