一种多通道触发调度读出电路的实现  

Implementation of a Multichannel Trigger Scheduling Read-out Circuit

作　　者：梁根源 颜俊伟 安一郎 周熙博 王泽坤 王长鑫 千奕[1,2] 郭松 孔洁[1,2] LIANG Genyuan;YAN Junwei;AN Yilang;ZHOU Xibo;WANG Zekun;WANG Changxin;QIAN Yi;GUO Song;KONG Jie(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China;School of Computer Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]中国科学院大学核科学与技术学院,北京100049 [3]中国科学院大学计算机科学与技术学院,北京100049

出　　处：《原子核物理评论》2024年第2期703-712,共10页Nuclear Physics Review

基　　金：甘肃省杰出青年基金资助项目(20JR10RA066);国家自然科学基金资助项目(U2031206)。

摘　　要：在^(101)Sn能级寿命测量中,鉴别其衰变链中的双α事件要求电子学需具有低的信号处理死时间,并且能对实验中多个粒子事件进行调度处理。本工作设计了一种多通道触发调度读出电路,实现了对探测信号的全波形读出,完成了击中事件的能量提取。同时,在电路中设计了一种快速调度架构,一方面实现了物理事件在时间-空间上的关联读出,另一方面通过提出的最小调度规划方法实现了对硬件资源消耗的优化。最后介绍了电子学系统设计以及一系列性能测试。初步测试结果表明,多通道触发调度读出系统死时间为80 ns,各通道在1 V输入下能量分辨精度均优于5.9‰FWHM,可支持多通道灵活触发调度,多事件经调度后在时间上相近、位置上相邻,经资源优化后整体硬件资源占用率减少了77.03%,满足指标要求。During the measurement of the ^(101)Sn level lifetime,identifying double α events in the decay chain requires a low signal processing deadtime and the ability to schedule experimental particle events for electronics.A readout electronics circuit with multi-channel trigger scheduling is designed,which is able to read out the waveform of detector signals and complete energy extraction of hit event.In the meantime,a fast scheduling architecture is designed in the circuit,which on the one hand realizes the read-out correlation of physical events in time and space dimension,and on the other hand realizes the optimization of hardware resource consumption by the proposed minimum scheduling planning method.This paper presents the design of the electronics system,along with a series of performance tests.The preliminary results indicate that the system's deadtime is 80 ns and the energy resolution accuracy of each channel is better than 5.9‰ FWHM under 1 V input;the system supports multi-channel flexible trigger scheduling,and after scheduling,multiple events are similar in time dimension,adjacent in position dimension;the overall hardware resource usage is reduced by 77.03 percent after resource optimization.The test results indicate that the readout system conforms to its specifications.

关 键 词：多通道采样 调度 电荷测量 现场可编程门阵列 

分 类 号：TN919.5[电子电信—通信与信息系统]