摘要
为实现分条电离室数据采集系统小型化和集成化,设计了一款ADC数据采集卡。该卡采用FMC子卡结构,支持16通道60 MS/s同步采集。通过FPGA编程,实现采样时钟配置、模数转换、数据传输和缓存功能。经测试:采集卡全功率模拟带宽为102 MHz(满量程2 Vpp),输入频率为5 MHz时,信噪比为68.58 dB,有效位大于10 bit;在束流模拟测试中输出非线性为0.72%;通道噪声0.209 mV,能满足分条电离室的数据采集需求。
In order to realize the miniaturization and integration of the data acquisition system of the Multi-channel Ionization Chamber,an ADC data acquisition card was designed which adopted the FPGA(Field Programmable Gate Array)Mezzanine Card(FMC)structure and can simultaneously sample 16 channels at 60 MS/s.All the functions including the sampling clock configuration,analog-todigital conversion,data transmission as well as buffering had been implemented with FPGA and tested in the laboratory.The results show that the analog bandwidth of the DAQ card is from DC to 102 MHz,the signal-to-noise ratio is 68.58 dB,and the ENOB are greater than 10 bits,while all the above data were measured with a-1dBFS signal(the full scale input is 2Vpp)at 5 MHz,the output Integral Non linearity(INL)is 0.72%in the simulated beam experiment,while the channel noise is 0.209 mV,The test results illustrated that the design of this ADC card can meet the data acquisition requirements of Multi-channel Ionization Chamber.
作者
刘晓涛
陈玉聪
李娟
何珮琳
毛瑞士
徐治国
王文韬
魏晓娟
LIU Xiao-tao;CHEN Yu-cong;LI Juan;HE Pei-lin;MAO Rui-shi;XU Zhi-guo;WANG Wen-tao;WEI Xiao-juan(Institute of Modern Physics,Chinese Academy of Science,Lanzhou 730000,China;University of Chinese Academy of Science,Beijing 100049,China)
出处
《核电子学与探测技术》
CAS
北大核心
2022年第3期503-509,共7页
Nuclear Electronics & Detection Technology
基金
甘肃省自然科学基金(20JR10RA115)资助。
关键词
分条电离室
ADC
数据采集
性能测试
Multi-channel Ionization Chamber
ADC
Data Acquisition
Performance Testing
