A time-sharing multi-channel pulse amplitude analyzer  

作　　者：Lian-Jun Jiang Xiang Zhou Tong-Yu Wu Ze-Jie Yin 

机构地区：[1]State Key Laboratory of Particle Detection and Electronics,University of Science and Technology of China [2]Department of Modern Physics,University of Science and Technology of China

出　　处：《Nuclear Science and Techniques》2017年第4期91-96,共6页核技术（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.11375195,11375263,and 11105143);the project of National Magnetic Confinement Fusion Energy Development Research(No.2013GB104003)

摘　　要：A conventional multi-channel pulse amplitude analyzer acquires single energy spectrum,but provides no information on its tendency with time.To address the limitation,we propose a scheme of time-sharing multichannel pulse amplitude analyzer(TSMCA).A dual-port random access memory is divided into two storage spaces,one for current energy spectrum data acquisition and another for previous energy spectrum data storage.The two tasks can be performed simultaneously,and the time-related variation tendency of energy spectrum can be obtained.A prototype system of TSMCA is designed.It performs nicely,with maximum channel number of 4096 in capacity of 2^(32)/Ch,minimal time-sharing slice of 25 ms,the differential nonlinearity of <1.5%,and the integral nonlinearity of <0.3%.A conventional multi-channel pulse amplitude analyzer acquires single energy spectrum, but provides no information on its tendency with time. To address the limitation, we propose a scheme of time-sharing multi-channel pulse amplitude analyzer (TSMCA). A dual-port random access memory is divided into two storage spaces, one for current energy spectrum data acquisition and another for previous energy spectrum data storage. The two tasks can be performed simultaneously, and the time-related variation tendency of energy spectrum can be obtained. A prototype system of TSMCA is designed. It performs nicely, with maximum channel number of 4096 in capacity of 2³²/Ch, minimal time-sharing slice of 25 ms, the differential nonlinearity of <1.5%, and the integral nonlinearity of <0.3%.

关 键 词：MULTI-CHANNEL pulse AMPLITUDE ANALYZER MCA Time-sharing ADC DUAL-PORT RAM 

分 类 号：TL822[核科学技术—核技术及应用]