高阶核脉冲信号成形方法研究  

Study on High-Order Pulse Signal Shaping Method

作　　者：辛昊 蒋开明[1] 王敏 黄洪全[1] 马兴科 李俊林 黄博睿 XIN Hao;JIANG Kai-ming;WANG Min;HUANG Hong-quan;MA Xing-ke;LI Jun-lin;HUANG Bo-rui(College of Nuclear Technology and Automation Engineer,Chengdu University of Technology,Chengdu,Sichuan 610059,China;Chengdu Institute of Product Quality Inspection and Research Co.,Ltd.,Chengdu,Sichuan 610100,China;Northeastern University,Qinhuangdao,Hebei 066004,China)

机构地区：[1]成都理工大学核技术与自动化工程学院,四川成都610059 [2]成都产品质量检验研究院有限责任公司,四川成都610100 [3]东北大学,河北秦皇岛066004

出　　处：《核电子学与探测技术》2022年第4期705-711,共7页Nuclear Electronics & Detection Technology

基　　金：国家自然科学区域创新发展联合基金(U19A2080);四川省科技计划项目(2021YJ0325);成都理工大学教改项目(JG2130032)资助。

摘　　要：针对成形前核脉冲信号的高阶特性,本文提出一种构建高阶脉冲模型及其成形算法的思路。采用系统函数及Z变换的方法,以具有惯性环节形状特征的三阶信号为例构建了三惯性脉冲模型及其梯形成形算法。结果表明,该方法得到的三惯性脉冲模型具有较高的灵活性与准确性,可以根据探测器的输出信号特点进行参数调整用以表现高阶核脉冲的复杂性,其梯形成形算法也具有较好的效果,对于提升系统能量分辨率与计数率具有重要意义。Aiming at the high-order characteristics of the nuclear pulse signal before shaping,an idea of constructing a high-order pulse model and its shaping algorithm is proposesd.Using the method of system function and Z transform,the three-inertial impulse model and its trapezoidal shape algorithm are constructed by taking the third-order signal with the shape characteristic of inertial elements as an example.The results show that the three-inertial pulse model obtained by this method has high flexibility and accuracy,and the parameters can be adjusted according to the characteristics of the output signal of the detector to represent the complexity of high-order nuclear pulses.The good effect is of great significance for improving the energy resolution and counting rate of the system.

关 键 词：核脉冲模型 梯形成形 系统函数 Z变换 堆积概率 

分 类 号：TL82[核科学技术—核技术及应用] TN782[电子电信—电路与系统]