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Digital nuclear pulse triggering system

A nuclear pulse and exponential technology, applied in the field of digital nuclear pulse triggering system, can solve the problems of scintillation detector decay time signal chain distributed capacitance influence and other problems

Pending Publication Date: 2021-01-22
李立君
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the zero-crossing point is affected by the decay time of the scintillation detector and the distributed capacitance of the signal chain.

Method used

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Embodiment Construction

[0025] Embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings.

[0026] Embodiments of the present disclosure are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. The present disclosure can also be implemented or applied through different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, a...

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Abstract

The invention provides a digital nuclear pulse triggering system. The digital nuclear pulse triggering system comprises a scintillator probe, an analog adjusting circuit, a first exponential forming deconvolver, a CR2-RC filter, a parameter adjuster, a second exponential forming deconvolver and a zero-crossing detector which are connected with one another in a matched mode. According to the digital nuclear pulse triggering system, the time constant of an output signal of the analog adjusting circuit is eliminated through the first exponential forming deconvolver, and the CR2-RC filter and theparameter adjuster are matched with the second exponential forming deconvolver, so that the influence of scintillator attenuation time, distributed capacitance of a signal chain and the like is eliminated. The digital nuclear pulse triggering system can eliminate the influence of baseline, pulse amplitude, crystal attenuation time, distributed capacitance of a signal chain and the like, and the working performance of the digital nuclear pulse triggering system.

Description

technical field [0001] The invention belongs to the field of nuclear instrumentation and nuclear radiation detection, in particular to a digital nuclear pulse trigger system. Background technique [0002] The nuclear pulse trigger system is an essential key unit in the pulse counting and energy spectrum measurement nuclear instruments. The nuclear pulse trigger system can detect the moment when the nuclear signal arrives, and plays a decisive role in the signal processing state transition inside the nuclear instrument. For pulse counting instruments, the system starts counting once triggered. Spectrum measuring instrument, after triggering, the system starts to perform operations such as amplitude acquisition, baseline subtraction, track count accumulation, etc. [0003] At present, the threshold comparison method and the zero-crossing comparison method are mostly used. The threshold comparison method is to complete the trigger when the input signal exceeds the set thresh...

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Application Information

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IPC IPC(8): G01T1/17G01T1/20H03K3/02
CPCG01T1/17G01T1/20H03K3/02
Inventor 李立君
Owner 李立君
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