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Space telescope based on digital time marks

A technology of time stamping and telescopes, applied in the field of space telescopes, can solve the problems of high cost, limited popularization, and high background count of gamma-ray burst detectors, and achieve good universality and practicability, flexible and compact structure, and wide application range Effect

Pending Publication Date: 2017-01-18
WUHAN JOINBON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large size of the photomultiplier, its fragility, and its low degree of integration and automation, the existing gamma-ray burst detectors have relatively high construction costs.
On the other hand, the background count of the rapidly developing silicon photomultiplier (Si-PhotoMultiplier, hereinafter referred to as SiPM) is too high when it is applied to the gamma-ray burst detector, which limits its promotion in the field of related radiation detection.
[0004] Because the cost of the existing PMT-based gamma-ray burst detector is too high, and the background count of the SiPM-based space telescope is too high, it is necessary to propose a digital time stamp with a small background count, a more flexible and compact structure, and low cost. Space telescopes to obtain more accurate energy information and event time information

Method used

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  • Space telescope based on digital time marks
  • Space telescope based on digital time marks

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0079] Example 1: Space Telescope Based on Digitized Time Stamping

[0080] List the parameters of this embodiment 1 processing data here:

[0081] The mechanical module used in the module 100 is made of aluminum, the scintillation crystal is lanthanum cerium bromide, the light emitting glass is epoxy resin, and the reflective material is barium sulfate powder;

[0082] The number of sub-pixel modules used in the module 200 in each pixel is N=10;

[0083] The delay time length of the timing circuit module adopted in the module 300 is 200 ns, and the threshold voltage of the threshold chopper circuit is 100 mV;

[0084] The transmission interface used in the module 400 is an Ethernet interface, the clock period is 20 ns, and the spectral energy interval is 5keV.

example 2

[0085] Example 2: Space Telescope Based on Digitized Time Stamping

[0086] List the parameters of the present embodiment 2 processing data here:

[0087] The material of the mechanical module used in the module 100 is plastic, the scintillation crystal is sodium iodide, the light emitting glass is phenolic resin, and the reflective material is Teflon tape;

[0088] The number of sub-pixel modules used in the module 200 in each pixel is N=15;

[0089] The delay time length of the timing circuit module adopted in the module 300 is 100 ns, and the threshold voltage of the threshold chopper circuit is 120 mV;

[0090] The transmission interface used in the module 400 is a USB interface, the clock period is 50 ns, and the spectral energy interval is 10 keV.

example 3

[0091] Example 3: Space Telescope Based on Digitized Time Stamping

[0092] List the parameters of the present embodiment 3 processing data here:

[0093] The mechanical module used in the module 100 is made of copper, the scintillation crystal is ytterbium lutetium silicate, the light-emitting glass is quartz glass, and the reflection material is 3M™ Enhanced Specular Reflector (enhanced specular reflection film);

[0094] The number of sub-pixel modules used in the module 200 in each pixel is N=20;

[0095] The delay time length of the timing circuit module adopted in the module 300 is 400 ns, and the threshold voltage of the threshold chopper circuit is 40 mV;

[0096] The transmission interface used in the module 400 is an industrial field bus interface, the clock cycle is 20 ns, and the spectral energy interval is 50keV.

[0097] The invention relates to the fields of high-energy physics and particle physics applications, nuclear medicine equipment and biomedical diagno...

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Abstract

The invention relates to a space telescope based on digital time marks. The space telescope comprises a scintillation crystal probe module, an SiPM simulation signal module, a multi-channel digital time module and a scintillation pulse signal processing module. Light signals and simulation signals are converted into digital signals at an early-most photoeletric conversion stage, and the digital signals are transmitted to a host computer or a signal processing unit in a compressed data bulk mode. According to the system, digitalization is realized at an early-most stage of avalanche diode response photons, advantages of relatively good time spatial resolution, small computational complexity, good repeatability, strong system adaptability and independence from light beam characteristics are realized, and inherent characteristics of the light beam data can be learned.

Description

technical field [0001] The invention relates to the fields of high-energy physics and particle physics applications, astrophysics equipment and optoelectronics, in particular to a space telescope based on digital time stamps. Background technique [0002] A silicon photomultiplier is an array of avalanche diodes operating in counting mode. The micro-units (Mirco-Cell) that make up the array in the device are avalanche diodes that can quickly respond to photons. Since the number of acting photons is greater than 1 in most applications, it is necessary to make avalanche diodes into arrays to respond to different numbers of photons. In a short period of time, the number of cells responding to photons has a monotonic correspondence with the expected number of incoming photons. According to this corresponding relationship, measuring the number of micro-elements can indirectly reflect the current intensity of the incoming photon beam. [0003] Silicon photomultipliers have a wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/16
CPCG01T1/16
Inventor 邓贞宙王麟李开富谢庆国
Owner WUHAN JOINBON TECH CO LTD
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