Scintillation detector system for system trigger and waveform measurement and method thereof

A waveform measurement and scintillation detection technology, applied in the field of radiation measurement, to achieve the effect of improving efficiency and reducing project implementation costs

Inactive Publication Date: 2014-09-03
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology

[0009] The purpose of the present invention is to provide a scintillation detection system and method for system triggering and waveform measurement, which is used to solve the problem of measuring pulsed radiation field waveforms. Due to the limitation of measurement requirements and operating space constraints, a single set of scintillation detection system can be used. Technical Issues with Trigger Correlation Functions and Full Waveform Measurement Diagnostics

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  • Scintillation detector system for system trigger and waveform measurement and method thereof
  • Scintillation detector system for system trigger and waveform measurement and method thereof
  • Scintillation detector system for system trigger and waveform measurement and method thereof

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Embodiment Construction

[0040] A high-sensitivity scintillation detection system for waveform measurement and system triggering, including: a single scintillator detector and signal transmission branch 2: scintillation detector 21, radio frequency coaxial cable 22, splitter 23, and stabilized power supply twenty four;

[0041] Trigger correlation transmission and recording system 3: Impedance matching unit 31 includes coaxial attenuator a, low noise amplifier b, gate phase modulation unit 32 includes low pass filter c, inverter d, splitter 33, trigger correlation recording The system includes 341, 342, 34N;

[0042] Full waveform measurement transmission and recording system 4: splitter 41, amplitude adjustment unit 42 includes attenuator or amplifier e, attenuator or amplifier f, attenuator or amplifier g, full waveform recording system includes 431, 432, 43N.

[0043] The detector is connected to the current signal distributor through the radio frequency coaxial cable, and the distributor divides ...

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Abstract

The invention discloses a scintillation detector system for system trigger and waveform measurement and a method thereof. The technical problem that a single scintillation detector system realizes system trigger and pulse full-waveform measurement diagnosis during waveform measurement in a pulse radiation field is solved. The system has the following main characteristics: on one hand, the influence of cosmic rays and dark noise on the trigger function of a detector is effectively avoided by the adoption of a passive filter technology; and on the other hand, the influence of time-domain reflectometry caused by impedance mismatching on full-waveform measurement of the detector is effectively overcome by full utilization of the unique performance of a passive broadband attenuator in attenuation of both forward and backward signals. Meanwhile, a low noise amplifier is utilized to amplify signals, and it is guaranteed that signal amplitude of the line is unchanged. Thus, reliable trigger is guaranteed, and it is guaranteed that a filter circuit will not influence full-waveform measurement of another line. Efficiency of the detector system is effectively raised, and the system has a function of reliably monitoring running status at real time.

Description

technical field [0001] The invention relates to the technical field of radiation measurement, in particular to a scintillation detection system and method for system triggering and waveform measurement. Background technique [0002] The scintillation detection system composed of photomultiplier tube (PMT) and scintillator is the most widely used type of detection system in pulsed radiation field waveform measurement. Its main structure is a scintillator, a light collection part and a photoelectric conversion device. Its working process is that when the radiation pulse enters the scintillator, the atoms in it are excited to generate fluorescence, and the fluorescence is collected and irradiated to the surface of the PMT photocathode by the light collection component. Photons emit photoelectrons on the photocathode, and the photoelectrons are multiplied on each multiplier, and the output current signal is collected by the anode. By measuring and analyzing the characteristics o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/20
Inventor 刘君红宋朝晖韩和同张子川谭新建张侃卢毅李刚
Owner NORTHWEST INST OF NUCLEAR TECH
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