摘要
多道分析技术在硅探测器、闪烁体探测器与气体探测器研究领域具有广泛应用,主要用于信号采集与数据分析。本文以ARM架构为核心,结合高精度峰值保持电路与基于Qt框架的PC端数据采集软件,设计并研制了一种多道分析系统。峰值保持电路实现了脉冲峰值的高精度保持、自放电控制,同时支持可调保持时间以适配不同应用场景;核心数据采集模块负责脉冲信号数字化采集、实时计数率显示及以太网传输控制。硬件设计中引入了可调脉冲幅度甄别、DMA直接存储访问、均值滤波及峰值提取算法,优化了系统资源、提高数据精度并降低虚假事件率;基于Qt框架的PC端软件实现了数据采集、能谱在线绘制和计数率实时显示等功能。测试结果表明,系统的响应线性拟合优度R^(2)为0.9999,积分非线性(INL)为0.06%;在^(55)Fe放射源条件下,微结构气体探测器能量分辨率为16.17%(@5.9 keV)。结果证明了该系统的良好线性度和稳定性,展现了其在核探测领域的应用价值。
Multi-channel analysis(MCA)technology is used utilized in silicon,scintilator,and gas detectors for signal acquisition and data analysis.An MCA system based on ARM architecture was developed,integrating a high-precision peak-holding circuit and PC data acquisition software implemented using the Qt framework.The peak-holding circuit achieves accurate pulse-peak retention and self-discharge control,with adjustable holding time to accommodate varying count rates.Digital signal acquisition,real-time count rate display,and Ethernet transmission control are handled by the core data acquisition module.The hardware design incorporates adjustable pulse amplitude discriminator,directive memory access(DMA),moving average filtering,and peak extraction algorithms,which effectively reduce system load,improve data accuracy,and minimize false event rates.The PC-side software enables data acquisition,real-time spectrum plotting,and count rate monitoring.Experimental results indicate that the system achieves a response linearity fitting goodness of 0.9999,an integral nonlinearity(INL)of 0.06%.Under the conditions of a ^(55)Fe radiation source,the system achieves an energy resolution of 16.17% at 5.9 keV.These results confirm linearity,stability,and energy resolution of the system,highlighting its potential for applications in nuclear detection.
作者
王浩祯
吝守龙
郭佳承
贾世海
张昀昱
胡守扬
周静
孙鹏飞
宋金兴
陈雷
智宇
赵明锐
靳尚泰
卢志永
邓桂华
庄晓
许天驹
蒋涛
杜泳熙
李沛玉
张洞明
杨智棋
赵永刚
李笑梅
WANG Haozhen;LIN Shoulong;CUO Jacheng;JIA Shihai;ZHANG Yunyu;HU Shouyang;ZHOU Jing;SUN Pengfei;SONG Jinxing;CHEN Lei;ZHI Yu;ZHAO Mingui;JIN Shangtai;LU Zhiyong;ENG Guihua;ZHUANG Xiao;XU Tianju;JIANG Tao;DU Yongxi;LI Peiyu;ZHANC Dongming;YANC Zhiqi;ZHAO Yongang;LI Xiaomei(Key Laboratory of Nuclear Data,China Institute of Atomic Energy,Beijing 102413,China;Institute of Radiochemistry,China Institute of Atomic Energy,Beijing 102413,China;Center of Nuclear Technical Support,State Administration of Science,Technology and Industry for Nation Defence,Beijing 100070,China;Guangxi University,Nanning 530004,China;Dalian Polytechnic University,Dalian 116034,China)
出处
《核电子学与探测技术》
北大核心
2025年第11期1632-1640,共9页
Nuclear Electronics & Detection Technology
基金
国家重点研发计划项目(2022YFA1602103,2024YFA1610804,2018YFE0104800)资助
中国原子能科学研究院放射化学研究所青年基金项目资助
中国核工业集团有限公司平台稳支项目
稳定支持基础科研计划(BJ010261223282)资助。
关键词
ARM架构
多道分析
峰值保持
Qt框架
ARM architecture
multi-channel analysis
peak-holding
Qt framework
