基于波形高速获取与处理的数字化探测器技术研究

项目名称： 基于波形高速获取与处理的数字化探测器技术研究

项目编号： No.11475121

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 杨朝文

作者单位： 四川大学

项目金额： 100万元

中文摘要： 辐射探测器输出信号可能同时包含粒子能量、种类、位置、时间等信息，如果对信号波形进行数值化获取，配合相应的处理算法，不仅可以获得更多的信息，而且相同的探测器可以根据算法的不同具有不同的功能，明显优于传统的核电子学方法，这是辐射探测技术的发展方向。本项目基于脉冲波形高速获取与处理技术，针对NaI(Tl)，LaBr3(Ce)，塑料闪烁体等三种类型探测器，研究信号波形高速获取与处理技术及其与探测器的集成技术，研究并获得数字化探测器核心算法，如各种滤波算法、辐射特征量提取方法、堆积判别与解谱方法、基线漂移估计与恢复方法、脉冲形状甄别算法、基于离散序列的定时方法与时间测量算法、数字化符合测量方法等，实现三种类型数字化探测器原型样机，研究数字化探测器性能指标测试方法，构建基于波形获取与处理的数字化探测器应用范例。该研究是对传统的辐射探测和核电子学方法的变革，既有重要的科学意义，更有广泛的应用前景。

中文关键词： 数字化探测器；波形采样；算法；脉冲波形甄别；数据获取与处理

英文摘要： Energy,type,position and time of a particle may exist in a signal from nuclear detector bombarded by the particle. Traditional complicated nulear electronics may get just one information from the signal. More information may be gotten with a simplified system which is made of traditional detectors combined with digital acquisition and process system of signal shape.This is a new developing direction for nuclear detection and measurement.In this project, integration technology of NaI(Tl),LaBr3(Ce),plastic scintillator detectors coupled with digital acquisition and process of signal shape will be studied, the prototype of inteligent detectors mentioned above will be produced,the algorithms for digital instrument of nuclear detector (shuch as filtering, algorithm for intrinsic parameters, pile-up identification and spectrum analysis,base line shift and restore, discrimination of pulse shape,timing and time measurement from discrete series of signal,and so on) will be studied and developed, a desktop of software development for digital nuclear detectors will be designed and developed, the methods for testing the parametors of nuclear detectors will be studied. a typical sample of digital nuclear detectors based on digital acquisition and process of signal shape will be constructed. The research results of the project may lead to change of traditional nuclear electronics, will be very important to both science and application.

英文关键词： digital detectors;pulse shape sampling;algorithm;pulse shape discrimination;data acquisition and process